Abrégé

The present invention relates to a catalytic hydrogenation reaction and a use of a manganese-based catalyst, and in particular to using a manganese-based multidentate ligand compound to carry out a catalytic hydrogenation reaction on urea or a derivative thereof or a carbamate compound. Moreover, the present invention first proposes new use of the manganese-based multidentate ligand compound in the reaction.

Classes IPC  ?

• C07C 231/10 - Préparation d'amides d'acides carboxyliques à partir de composés non prévus dans les groupes
• C07C 233/15 - Amides d'acides carboxyliques ayant des atomes de carbone de groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone acycliques ayant l'atome d'azote d'au moins un des groupes carboxamide lié à un atome de carbone d'un radical hydrocarboné substitué par des atomes d'halogène ou par des groupes nitro ou nitroso avec le radical hydrocarboné substitué lié à l'atome d'azote du groupe carboxamide par un atome de carbone d'un cycle aromatique à six chaînons
• C07C 233/03 - Amides d'acides carboxyliques ayant des atomes de carbone de groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone acycliques ayant les atomes d'azote des groupes carboxamide liés à des atomes d'hydrogène ou à des atomes de carbone de radicaux hydrocarbonés non substitués avec des atomes de carbone de groupes carboxamides liés à des atomes d'hydrogène
• C07C 273/18 - Préparation d'urée ou de ses dérivés, c.-à-d. de composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso d'urées substituées
• C07C 275/30 - Dérivés d'urée, c.-à-d. composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso ayant des atomes d'azote de groupes urée liés à des atomes de carbone de cycles aromatiques à six chaînons d'un squelette carboné étant substitué de plus par des atomes d'halogène ou par des groupes nitro ou nitroso
• C07C 275/28 - Dérivés d'urée, c.-à-d. composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso ayant des atomes d'azote de groupes urée liés à des atomes de carbone de cycles aromatiques à six chaînons d'un squelette carboné
• C07C 275/26 - Dérivés d'urée, c.-à-d. composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso ayant des atomes d'azote de groupes urée liés à des atomes de carbone de cycles autres que des cycles aromatiques à six chaînons
• C07C 275/06 - Dérivés d'urée, c.-à-d. composés contenant l'un des groupes les atomes d'azote ne faisant pas partie de groupes nitro ou nitroso ayant des atomes d'azote de groupes urée liés à des atomes de carbone acycliques d'un squelette carboné acyclique et saturé
• B01J 31/24 - Phosphines
• B01J 31/22 - Complexes organiques
• B01J 31/20 - Carbonyles

Produits et services

Colorants for use in the manufacture of food; Colorants for beverages; Colorants for beer; Food colors for domestic use; Food coloring; Pigments; Color pigments; Colorants for use in the manufacture of cosmetics; Edible inks; Synthetic resin paints; Anti-corrosive preparations; Mastic [natural resin].

Produits et services

Pigments; Color pigments; Colorants for beer; Colorants for use in the manufacture of beverages; Colorants for use in the manufacture of cosmetics; Colorants for use in the manufacture of food; Food colorants; Food colorants for domestic use

Abrégé

The present invention relates to a catalyst for an alkynylation reaction and an alkynylation method. The catalyst comprises a modifier and a metal oxide system. The metal oxide system is a support oxide doped with a first metal element, and the modifier is present in at least part of the surface region of the metal oxide system. The alkynylation method comprises the step of reacting a carbonyl-containing compound with a terminal alkynyl-containing compound in the presence of the catalyst.

Classes IPC  ?

• B01J 23/644 - Arsenic, antimoine ou bismuth

Abrégé

A multidentate phosphite ligand is used in the catalytic synthesis of adiponitrile. The ligand is represented by the following general formula (I). The method of catalytic synthesis of adiponitrile comprises primary hydrocyanation, isomerization, and secondary hydrocyanation reactions, wherein the catalyst adopted each comprises a phosphite ligand-nickel complex composed of a nickel precursor and a multidentate phosphite ligand. The ligand molecule has a higher electron cloud density, and the phosphorus content capable of participating in coordination in the ligand molecule per unit mass is higher, so that the catalytic activity of the catalyst is improved, and the amount of the catalyst is reduced. A multidentate phosphite ligand is used in the catalytic synthesis of adiponitrile. The ligand is represented by the following general formula (I). The method of catalytic synthesis of adiponitrile comprises primary hydrocyanation, isomerization, and secondary hydrocyanation reactions, wherein the catalyst adopted each comprises a phosphite ligand-nickel complex composed of a nickel precursor and a multidentate phosphite ligand. The ligand molecule has a higher electron cloud density, and the phosphorus content capable of participating in coordination in the ligand molecule per unit mass is higher, so that the catalytic activity of the catalyst is improved, and the amount of the catalyst is reduced.

Classes IPC  ?

• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone
• B01J 31/18 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des complexes de coordination contenant de l'azote, du phosphore, de l'arsenic ou de l'antimoine
• B01J 37/04 - Mélange
• C07F 9/06 - Composés du phosphore sans liaisons P—C
• C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle

Produits et services

Vitamins for manufacturing use; Antioxidants for use in manufacture; Additives for use in the manufacture of food supplements; Chemical additives for use in the manufacture of cosmetics, food, and pharmaceuticals; vitamins for use in the manufacture of food supplements; Vitamins for use in the manufacture of cosmetics, food, and pharmaceuticals; Amino acids, other than for medical or veterinary purposes; Chemical preparations for use in industry

Abrégé

Disclosed in the present invention is a preparation method for a supported catalyst, which method comprises the following steps: (1) dispersing a dry carrier into a solvent containing a modifier, stirring and mixing same to obtain a modifier-modified carrier; and (2) dispersing the carrier in step (1) into a solution containing an active metal compound, stirring the solution, heating the solution for adsorption, and drying same to a constant weight to obtain a catalyst. When the catalyst prepared by means of the method is applied to the synthesis of hexamethyl indanol, the selectivity is good, the catalyst is environmentally friendly, a quenching reaction is not required, a large amount of "three wastes" is not generated, and the environmental protection problem caused by the use of aluminum trichloride in the prior art is solved. Further disclosed in the present invention are a supported catalyst and the use thereof.

Classes IPC  ?

• B01J 31/06 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques contenant des polymères
• C07C 29/36 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par des réactions augmentant le nombre d'atomes de carbone avec formation de groupes hydroxyle, ces groupes pouvant être produits par l'intermédiaire de dérivés de groupes hydroxyle, p. ex. du dérivé O-métal
• C07C 33/34 - Alcools monohydroxyliques contenant des cycles aromatiques à six chaînons et d'autres cycles

Produits et services

Methionine; Manufacture of methionine for animal feed; amino acids; Amino acids for animal feed manufacturing; Manufacture of nutritional supplements for animal feed; Chemical additives for feed production; Amino acids for food products; Amino acids for pharmaceuticals; Amino acids for cosmetic products; Amino acids for dietary supplements; Industrial chemicals; chemical additives for use in the manufacture of food; chemical additives for use in the manufacture of pharmaceuticals; chemical additives for use in the manufacture of cosmetics; Chemical additives for the manufacture of dietary supplements; protein (raw material).

Produits et services

Amino acids, other than for medical or veterinary purposes; Nutritional additives for use in manufacturing animal feed; Industrial chemicals; chemical additives for use in the manufacture of food; chemical additives for use in the manufacture of pharmaceuticals; chemical additives for use in the manufacture of cosmetics; Methionine for use in the manufacture of animal feed; Feed additives for animal food production; Chemical additives for animal feed production

Produits et services

Esters; acetate esters; ketones; vitamins for the food industry; vitamins for use in the manufacture of pharmaceuticals; pyridine; hydrochlorates; sodium ascorbate for the food industry; vitamins for use in the manufacture of cosmetics; vitamins for use in the manufacture of food supplements; antioxidants for use in the manufacture of food and beverages; antioxidants for use in the manufacture of food supplements; chemical additives for use in the manufacture of pharmaceuticals; glucose for the food industry; chemical preparations for use in industry; chemical additive for food manufacturing; chemical additives to insecticides; amino acids for industrial purposes; synthetic taurine for industrial purposes; beta-carotene for use in the manufacture of food and beverages; lycopene for the food industry.

Produits et services

Methionine; Manufacture of methionine for animal feed; amino acids; Amino acids for animal feed manufacturing; Manufacture of nutritional supplements for animal feed; Chemical additives for feed production; Amino acids for food products; Amino acids for pharmaceuticals; Amino acids for cosmetic products; Amino acids for dietary supplements; Industrial chemicals; chemical additives for use in the manufacture of food; chemical additives for use in the manufacture of pharmaceuticals; chemical additives for use in the manufacture of cosmetics; Chemical additives for the manufacture of dietary supplements; protein [raw material].

Abrégé

Preparation method for 2-methyl-1,4-naphthoquinone and an intermediate thereof. The preparation method for the intermediate 2-methyl-1,4-tetrahydronaphthoquinone comprises: subjecting o-methylbenzoquinone and 1,3-butadiene to an addition reaction under the catalytic action of a metal chelating ionic liquid as represented by formula (I), so as to generate 2-methyl-1,4-tetrahydronaphthoquinone. The method can realize the preparation of 2-methyl-1,4-tetrahydronaphthoquinone with high efficiency, high selectivity and relative safety, and can be used in the preparation of 2-methyl-1,4-naphthoquinone.

Classes IPC  ?

• C07C 46/00 - Préparation de quinones
• C07C 50/10 - Quinones la structure quinoïde faisant partie d'un système cyclique condensé comportant deux cycles
• B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques
• C07F 1/08 - Composés du cuivre
• C07F 9/54 - Composés de phosphonium quaternaire

Abrégé

Provided are a preparation method for a benzoquinone compound and a preparation method for 2-methyl-1,4-naphthoquinone. A phenolic compound undergoes an oxidation reaction in a catalytic system in the presence of an oxidizing agent to generate a benzoquinone compound; the oxidizing agent is oxygen; the catalytic system contains 4-R-2,2,6,6-tetramethylpiperidinooxy, nitrite, protonic acid, and a solvent; R is -H, -OH, -NHAc, -COOH, -COOPh or (1); the protonic acid is at least one selected from trifluoromethanesulfonic acid, methanesulfonic acid, p-toluenesulfonic acid, a hydrogen chloride alcoholic solution, and sulfuric acid; and the solvent is at least one selected from methanol, ethanol, propanol, tert-butanol, water, and acetonitrile. According to the method, benzoquinone compounds can be obtained in high yields, oxygen can be used as an oxidizing agent, environmental friendliness is achieved, and a metal catalyst is not required, so that the use of a halogen and a transition metal can be avoided, thereby facilitating the preparation of high-quality 2-methyl-1,4-naphthoquinone or other benzoquinone compounds.

Classes IPC  ?

• C07C 46/08 - Préparation de quinones par oxydation avec formation de structures quinoïdes d'au moins un groupe hydroxyle d'un cycle aromatique à six chaînons par l'oxygène moléculaire
• C07C 50/02 - Quinones à structure quinoïde monocyclique
• C07C 46/00 - Préparation de quinones
• C07C 50/10 - Quinones la structure quinoïde faisant partie d'un système cyclique condensé comportant deux cycles
• B01J 31/26 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant en outre des composés métalliques inorganiques non prévus dans les groupes

Abrégé

A production process for a heterogeneous nitrogen-doped carbon material supported cobalt catalyst and vitamin K3. A preparation method for the catalyst comprises: mixing well glucosamine hydrochloride, melamine, and cobalt acetate, and sintering in an inert atmosphere, the feeding mass ratio of glucosamine hydrochloride to melamine being 1:25-45, and the feeding mole ratio of glucosamine hydrochloride to cobalt acetate being 1:0.01-0.75; further, subjecting 2-methyl-1,4-tetrahydronaphthoquinone to an oxidative dehydrogenation reaction in a catalytic system in the presence of an oxidizing agent to produce 2-methyl-1,4-naphthoquinone, namely vitamin K3, the catalytic system comprising the described heterogeneous nitrogen-doped carbon material supported cobalt catalyst and a solvent. Practice shows that the catalyst can efficiently catalyze the oxidative dehydrogenation of 2-methyl-1,4-tetrahydronaphthoquinone; the yield is high, and the catalyst is easy to recover, which helps reduce costs.

Classes IPC  ?

• B01J 27/24 - Composés de l'azote
• B01J 37/08 - Traitement thermique
• C07C 46/00 - Préparation de quinones
• C07C 50/10 - Quinones la structure quinoïde faisant partie d'un système cyclique condensé comportant deux cycles

Produits et services

Starch for industrial purposes; sugar alcohol; phenol for industrial purposes; alkaloids; aldehydes; protein [raw material]; heterocyclic compound; industrial chemicals; vitamins for use in the manufacture of food supplements; amino acids. Veterinary preparations; disinfectant wipes; medicated animal feed; chemical preparations for veterinary purposes; dietary supplements for animals.

Produits et services

Cyclohexane; dimethylamine; chemical preparations for use in industry; unprocessed artificial resins as raw materials in the form of powders, liquids or pastes; synthetic resins, unprocessed; synthetic resin adhesives for industrial purposes; vitamins for the food industry; esters; chemicals for use in making polyurethanes; firming agents being chemical additives for food.

Produits et services

Esters; cyclohexane; dimethylamine; chemicals for use in making polyurethanes; chemical preparations for use in industry; firming agents being chemical additives for food; unprocessed artificial resins as raw materials in the form of powders, liquids or pastes; synthetic resins, unprocessed; synthetic resin adhesives for industrial purposes; vitamins for the food industry.

Abrégé

The present invention relates to a catalyst system for a carbonylation reaction and a method for a carbonylation reaction. The catalyst system comprises: (a) a group VIII metal or a compound of the group VIII metal; (b) a bidentate phosphine ligand; and (c) an acidic additive. The component (b) is represented by the following formula (I): R1>P-A-Ar-B-P

Classes IPC  ?

• B01J 31/24 - Phosphines
• C07F 9/6568 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore comme uniques hétéro-atomes du cycle
• C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle
• C07F 9/6584 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'azote, avec ou sans atomes d'oxygène ou de soufre, comme hétéro-atomes du cycle comportant un atome de phosphore comme hétéro-atome du cycle
• C07F 9/50 - Organo-phospines
• C07C 67/38 - Préparation d'esters d'acides carboxyliques par réaction avec du monoxyde de carbone ou des formiates par addition à une liaison non saturée carbone-carbone
• C07C 69/24 - Esters d'acides acycliques monocarboxyliques saturés dont le groupe carboxyle est lié à un atome de carbone acyclique ou à l'hydrogène avec au moins trois atomes de carbone dans la partie acide estérifiés par des composés monohydroxylés
• C07C 69/612 - Esters d'acides carboxyliques avec un groupe carboxyle lié à un atome de carbone acyclique et comportant un cycle aromatique à six chaînons dans la partie acide
• C07C 69/75 - Esters d'acides carboxyliques dont un groupe carboxyle est lié à un atome de carbone d'un cycle autre qu'un cycle aromatique à six chaînons d'acides avec un cycle à six chaînons

Produits et services

Amino acids, other than for medical or veterinary purposes; Chemical additives for use in the manufacture of cosmetics; Chemical additives for use in the manufacture of food; Chemical additives for use in the manufacture of pharmaceuticals; Industrial chemicals; Nutritional additives for use in manufacturing animal feed

Produits et services

Antioxidants for use in manufacture; Antioxidants for use in the manufacture of animal feed; Chemical additives for use in the manufacture of cosmetics; Chemical additives for use in the manufacture of food; Chemical additives for use in the manufacture of pharmaceuticals; Industrial chemicals; Nutritional additives for use in manufacturing animal feed

Produits et services

(1) Amino acid preparations for medical purposes; animal feed additives; animal feed additives for use as nutritional supplements; animal feed supplements for veterinary purposes; dietary supplement for animal feed containing essential oils for the maintenance of healthy digestive functions in poultry; dietary supplements consisting of amino acids; dietary supplements for general health and well-being; food supplements consisting of amino acids; methionine preparations; non-medicated nutritional supplements for animal feed; nutritional supplements for livestock feed

Produits et services

carotenoids; Carotenoids for animal food production; Feed additives for the preparation of animal feed (non-medical); Industrial chemicals; chemical additives for use in the manufacture of food; chemical additives for use in the manufacture of pharmaceuticals; chemical additives for use in the manufacture of cosmetics; Chemical additives for foodstuffs; antioxidants for use in manufacture; protein [raw material].

Produits et services

Amino acids, other than for medical or veterinary purposes; Animal fodder additives in the nature of fodder acidifiers for use in manufacturing animal fodder; Carbonic hydrates; Chemical additives for use in the manufacture of cosmetics; Chemical additives for use in the manufacture of food; Chemical additives for use in the manufacture of pharmaceuticals; Chemical preparations for use in industry; Enzymes for industrial purposes; Glucose for industrial purposes; Glutamic acid for industrial purposes; Heterocyclic compounds; Industrial chemicals; Nutritional additives for use in manufacturing animal feed; Organic acid salts; Proteins for use in manufacture

Produits et services

Serine; histidine; Threonine; Citrulline; Alanine; L-Theanine; Amino acids for industrial purposes; Taurine; Tryptophan; Valine; Leucine; isoleucine; tyrosine; hydroxyproline; arginine; glycine; L-Cysteine; Cystine; chemical additives for use in the manufacture of food; chemical additives for use in the manufacture of pharmaceuticals; Chemical additives for use in the manufacture of cosmetics; hydrochlorates; glutamic acid for industrial purposes; protein [raw material]; enzymes for industrial purposes; glucose for industrial purposes; Choline chloride; carbonic hydrates; Heterocyclic compounds; Chemical preparations for use in industry. Tryptophan preparations; Threonine preparations; vitamin preparations; pharmaceutical preparations; chemical reagents for medical or veterinary purposes; amino acids for medical purposes; crude drugs; nutritional supplements; amino acids for veterinary purposes; nutritional additives to foodstuffs for animals for medical use; Medicated additives for animal feeds; dietary supplements for animals; Dietary supplements for humans.

Abrégé

Disclosed in the present invention are a method for manufacturing high-activity polyphenylene sulfide (PPS) by regulating and controlling the water content in the polymerization process and a high-efficiency PPS resin manufactured thereby. The manufacturing method comprises: taking sodium hydrosulfide and p-dichlorobenzene as raw materials, taking N-methyl-2-pyrrolidone as a solvent, carrying out a polycondensation reaction until the conversion rate of p-dichlorobenzene reaches 97% or more, adding deionized water, reducing the temperature in a reaction kettle to 250-260°C, keeping the temperature for 1-3 h, and cooling for post-processing. The molar weight of the added deionized water is 1.0-2.5 mol based on 1.0 mol of sodium hydrosulfide. The method for manufacturing high-activity PPS disclosed in the present invention can be realized in the PPS polymerization process, that is, an end-capping reagent does not need to be additionally added, without affecting the molecular weight and thermal stability of the finally manufactured PPS; chain extension treatment does not need to be carried out after the PPS resin is manufactured, without additionally increasing the technological process and the production cost.

Classes IPC  ?

• C08G 75/0259 - Procédés de préparation utilisant des hydrogénosulfures métalliques
• C08G 75/029 - Modification par des composés organiques

Abrégé

The present invention discloses a method for preparing an ibuprofen spherical crystal having high bulk density and a product thereof. The method includes: (1) heating ibuprofen until a molten liquid state is reached; and (2) pressurizing the molten liquid state of ibuprofen, dropping the molten liquid state of ibuprofen into a crystallizer filled with water through a liquid distributor for crystallization under stirring conditions until the molten liquid state of ibuprofen is completely dropped, lowering the rotation speed of stirring to allow crystal growing, and finally, subjecting a resulting crystal slurry to post-treatment to obtain the ibuprofen spherical crystal having high bulk density. The ibuprofen spherical crystal has a bulk density of 0.50-0.70 g/mL, a tap density of 0.63-0.89 g/mL, a median particle size of 300-1,000 μm and an angle of repose of 22-29°. The method of the present invention features that the process thereof is simple, and that no additives are used, such that the method is suitable for industrial production. The ibuprofen spherical crystal prepared has regular crystal habit, smooth crystal surface, good fluidity, high bulk density and high product purity. The quality of a product meets requirements of CP2020, EP9.8, USP41 and other pharmacopoeias.

Classes IPC  ?

• C07C 51/43 - SéparationPurificationStabilisationEmploi d'additifs par changement de l'état physique, p. ex. par cristallisation

Produits et services

Artificial resins, semi-processed; Elastic threads, other than for textile use; Elastic yarns, other than for textile use; Flexible hoses, not of metal; Insulating materials; Paper for electrical capacitors; Plastic fibers, other than for textile use; Plastic substances, semi-processed; Semi-processed foams of plastic in the nature of filtering materials in the gas-solid and liquid-solid filtration industry; Synthetic resins, semi-processed Netting, not of metal or asbestos; Plastic fibers for textile use; Raw fibrous textile; Ropes; Sails; String; Tents; Textile fibers; Twine for nets; Wadding for filtering

Abrégé

Disclosed are a poly(arylene sulfide) manufacturing process, a product thereof, and an application thereof. The manufacturing process uses a sulfur source and a dichloroaromatic compound as raw materials, utilizes an organic amide solvent, and performs a series of processes for preparation, including dehydration, pre-polymerization, polymerization, flash evaporation, post-treatment, etc. The invention creatively adds sodium chloride seed crystals into a reaction liquid during the pre-polymerization stage, and adds a filtration processing step for the reaction liquid after the pre-polymerization reaction ends. The use of the manufacturing process allows for greatly reducing the salt content of a prepared poly(arylene sulfide) resin crude product, greatly reducing the amount of high-salt wastewater generated, reducing water consumption and energy consumption, and helping to efficiently prepare a high-molecular-weight poly(arylene sulfide) resin; more importantly, the process is not only suitable as an intermittent process, but is likewise suited for continuous production, and is expected to greatly increase the production efficiency of the production system, reduce production costs and be more environmentally-friendly and green.

Classes IPC  ?

• C08G 75/0259 - Procédés de préparation utilisant des hydrogénosulfures métalliques

Abrégé

Provided in the present invention are a coenzyme Q10 microemulsion, a preparation method therefor and the use thereof. The coenzyme Q10 microemulsion is prepared from components comprising coenzyme Q10, a carrier oil, an anti-crystallization agent, a lipophilic emulsifier, a hydrophilic emulsifier, a co-emulsifier and water. The microemulsion has a particle size DV(90) of between 20 nm and 80 nm, and is clear, transparent, free of demulsification and high in bioavailability, can be stably stored for a long time at normal temperatures and in extreme temperature environments. In addition, the microemulsion is suitable for the pharmaceutical, cosmetic and food fields, especially for beverages, oral liquids and other products. Also provided in the present invention is a method for preparing the coenzyme Q10 microemulsion, which is simple in equipment, low in cost and easy in operation.

Classes IPC  ?

• A61K 31/122 - Cétones ayant l'atome d'oxygène lié directement à un cycle, p. ex. quinones, vitamine K1, anthraline
• A23L 2/52 - Addition d'ingrédients
• A23L 29/00 - Aliments ou produits alimentaires contenant des additifsLeur préparation ou leur traitement
• A23L 33/10 - Modification de la qualité nutritive des alimentsProduits diététiquesLeur préparation ou leur traitement en utilisant des additifs
• A61K 8/06 - Émulsions
• A61K 8/35 - Cétones, p. ex. quinones, benzophénone
• A61K 8/92 - Huiles, graisses ou ciresLeurs dérivés, p. ex. produits d'hydrogénation
• A61K 47/44 - Huiles, graisses ou cires couvertes par plus d’un des groupes Huiles, graisses ou cires naturelles ou naturelles modifiées, p. ex. huile de ricin, huile de ricin polyéthoxylée, cire de lignite, lignite, gomme-laque, colophane, cire d’abeille ou lanoline
• A61K 47/24 - Composés organiques, p. ex. hydrocarbures naturels ou synthétiques, polyoléfines, huile minérale, gelée de pétrole ou ozocérite contenant des atomes autres que des atomes de carbone, d'hydrogène, d'oxygène, d'halogènes, d'azote ou de soufre, p. ex. cyclométhicone ou phospholipides
• A61Q 19/00 - Préparations pour les soins de la peau

Abrégé

A mesoporous nickel powder and a preparation method therefor, and a nickel-phosphorus catalyst system. The mesoporous nickel powder comprises powder-like particles of metallic nickel, the average particle size of the particles being 1-100 μm, the average pore diameter being 10-60 nm, the pore volume being 0.02-0.09 cm3/g, and the BET specific surface area being 5.0-40.0 m2/g. The preparation method for the mesoporous nickel powder comprises: a hydrothermal synthesis step; a templating agent removal step; and a reduction step; the templating agent is a triblock copolymer comprising an A-B-A structure, or a disulfide bond diblock copolymer comprising an A-S-S-B structure. The nickel-phosphorus catalyst system comprises a complex formed by the mesoporous nickel powder and a phosphorus ligand.

Classes IPC  ?

• B22F 1/05 - Poudres métalliques caractérisées par la dimension ou la surface spécifique des particules
• B22F 1/06 - Poudres métalliques caractérisées par la forme des particules
• B22F 9/22 - Fabrication des poudres métalliques ou de leurs suspensionsAppareils ou dispositifs spécialement adaptés à cet effet par un procédé chimique avec réduction de mélanges métalliques à partir de mélanges métalliques solides utilisant des réducteurs gazeux
• B01J 31/22 - Complexes organiques
• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone
• C07C 255/04 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques d'un squelette carboné acyclique et saturé contenant deux groupes cyano liés au squelette carboné

Abrégé

A method and apparatus for preparing methyl methacrylate (MMA) are provided. The method includes an aldol condensation reaction, a first distillation, a second distillation, a third distillation, a phase splitting, and a fourth distillation. Through the control of the process, the aldol condensation reaction can be performed when methyl propionate is used as the ninth material stream and formalin solution is used as the fifteenth stream material, MMA is obtained as the final product from the third material stream, and the waste with low content of residual formaldehyde is recovered from the eighth material stream.

Classes IPC  ?

• C07C 67/035 - Préparation d'esters d'acides carboxyliques par réaction d'acides carboxyliques ou d'anhydrides symétriques avec des hydrocarbures saturés
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés
• B01J 21/06 - Silicium, titane, zirconium ou hafniumLeurs oxydes ou hydroxydes
• B01J 23/04 - Métaux alcalins

Produits et services

Amino acids for laboratory or research use; Carbonic hydrates; Chemical additives for use in the manufacture of food; Chemical additives for use in the manufacture of pharmaceuticals; Chemical preparations for use in industry; Enzymes for industrial purposes; Glucose for industrial purposes; Glutamic acid for industrial purposes; Heterocyclic compounds; Protein in raw material form for scientific and medical research; Vitamins for the food industry; Vitamins for use in the manufacture of cosmetics; Vitamins for use in the manufacture of pharmaceuticals

Produits et services

Protein [raw material]; Glutamic acid for industrial purposes; Chemical preparations for use in industry; Enzymes for industrial purposes; Glucose for industrial purposes; Vitamins for the food industry; Carbonic hydrates; Chemical additives for use in the manufacture of pharmaceuticals; Heterocyclic compounds; Vitamins for use in the manufacture of cosmetics; Vitamins for use in the manufacture of pharmaceuticals; Amino acids for industrial purposes; Choline chloride for use in the manufacture of vitamins; Chemical additives for use in the manufacture of food. Dietary supplements for animals; Vitamins for animals; Medicated animal feed; Amino acids for veterinary purposes; Vitamin preparations; Pharmaceutical preparations; Chemical reagents for medical or veterinary purposes; Nutritional additives to foodstuffs for animals, for medical purposes; Nutritional supplements; Medicated additives for animal feeds.

Abrégé

11011011010 alkanoyl, aryl, heteroaryl, cyano, or nitro, and n is an integer from 1 to 8; and mixing the first preparation with the second preparation for a reaction, removing HCl generated by the reaction, filtering, and carrying out post-processing on a filtrate to obtain the phosphorus-containing ligand.

Classes IPC  ?

• C07F 9/141 - Esters des acides phosphoreux
• C07F 9/145 - Esters des acides phosphoreux avec des composés hydroxyarylés
• C07F 9/572 - Cycles à cinq chaînons
• C07F 9/6506 - Cycles à cinq chaînons les atomes d'azote étant en positions 1 et 3
• C07F 9/6584 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'azote, avec ou sans atomes d'oxygène ou de soufre, comme hétéro-atomes du cycle comportant un atome de phosphore comme hétéro-atome du cycle
• B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques
• B01J 31/06 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques contenant des polymères
• B01J 35/08 - Sphères

Produits et services

vitamins for the food industry; vitamins for use in the manufacture of pharmaceuticals; Sodium ascorbate for the food industry; glucose for industrial purposes; Chemical additives for use in the manufacture of pharmaceuticals; chemical additives for food; proteins for the food industry; protein [raw material]; vitamins for use in the manufacture of food supplements; Chemical preparations for use in industry; vitamins for use in the manufacture of cosmetics; vitamins for use in the manufacture of food products; Glucose for the food industry; Enzymes for the food industry; antioxidants for use in the manufacture of cosmetics; antioxidants for use in the manufacture of pharmaceuticals; antioxidants for use in the manufacture of food supplements; proteins for use in the manufacture of food supplements; Calcium ascorbate for the food industry.

Abrégé

The present invention discloses a method for preparing taurine. The method comprises: (1) in the presence of an ammonia water complex ion catalyst, subjecting an aqueous sodium isethionate solution and ammonia to an ammonolysis reaction to obtain a reaction solution containing sodium taurate; (2) subjecting the reaction solution containing sodium taurate to deamination, concentration and dewatering, acidification, and crystallization to obtain taurine and a mother solution, wherein the ammonia water complex ion catalyst is obtained by complexing ammonia with a catalyst precursor, and the catalyst precursor comprises one or more metal elements of chromium, zinc, nickel, cobalt, copper, and silver. The method has the advantages of mild process conditions, a short reaction time, a high yield, a simple catalyst source, etc.

Classes IPC  ?

• C07C 303/30 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides d'esters d'acides sulfoniques par des réactions n'impliquant pas la formation de groupes sulfo estérifiés
• C07C 309/14 - Acides sulfoniques ayant des groupes sulfo liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé contenant des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso, liés au squelette carboné contenant des groupes amino liés au squelette carboné
• B01J 31/18 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des complexes de coordination contenant de l'azote, du phosphore, de l'arsenic ou de l'antimoine

Abrégé

The present application relates to a preparation method and apparatus for methyl methacrylate. The preparation method comprises an aldol condensation reaction, first distillation, second distillation, third distillation, phase splitting, and fourth distillation, so that by means of the control of a process flow, it is only needed to use methyl propionate as a ninth material stream and use a formalin solution as a fifteenth material stream so as to perform the aldol condensation reaction, and a final product, i.e., methyl methacrylate, is obtained from a third material stream, and waste materials comprising low formaldehyde residues is recovered from an eighth material stream.

Classes IPC  ?

• C07C 67/343 - Préparation d'esters d'acides carboxyliques par modification de la partie acide de l'ester sans introduction d'un groupe ester par isomérisationPréparation d'esters d'acides carboxyliques par modification de la partie acide de l'ester sans introduction d'un groupe ester par modification de la taille du squelette carboné par augmentation du nombre d'atomes de carbone
• C07C 69/54 - Esters d'acide acryliqueEsters d'acide méthacrylique

Abrégé

The present invention relates to an application of a polydentate phosphite ligand in the catalytic synthesis of adiponitrile. The ligand is represented by general formula (I). A method for catalytically synthesizing adiponitrile comprises a primary hydrocyanation reaction, an isomerization reaction and a secondary hydrocyanation reaction, wherein the catalysts used respectively comprise a phosphite ligand-nickel complex comprised of a nickel precursor and a polydentate phosphite ligand. The ligand molecule has a higher electron cloud density, and the content of phosphorus capable of participating in coordination in unit mass of the ligand molecule is higher, so that the catalytic activity of the catalyst is improved, and the amount of the catalyst is reduced. Furthermore, by designing and optimizing the ligand skeleton structure, the three-dimensional steric configuration of the phosphite ligand-nickel complex can be adjusted, and by combining with flexible regulation and control of the electronic effect and the steric hindrance effect of a substituent group on the ligand molecular structure, the chemical environment and the three-dimensional steric effect around a metal center can be changed, and the selectivity for the linear product adiponitrile is improved.

Classes IPC  ?

• C07C 255/04 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques d'un squelette carboné acyclique et saturé contenant deux groupes cyano liés au squelette carboné
• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone
• B01J 31/24 - Phosphines
• C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle

Abrégé

A porous polymer has a pore volume of 0.3 to 2.5 cm3/g and comprises a pore having a first pore diameter and a pore having a second pore diameter. A ratio of pore volume of the pore having a first pore diameter to pore volume of the pore having a second pore diameter is 1 to 10:1. The porous polymer is obtained by self-polymerization or copolymerization of at least one of the phosphorus ligands, and phosphorous content of the porous polymer is 1 to 5 mmol/g. The porous polymer-nickel catalyst made of the porous polymer has a significant increase in water resistance, which may reduce the consumption of phosphorus ligands, eliminating the steps of removing water from raw materials and reaction system water control, which greatly saves process equipment investment. When used in the preparation of adiponitrile from butadiene, it has high catalytic activity, high reaction selectivity, and high linearity.

Classes IPC  ?

• B01J 31/06 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques contenant des polymères
• C08F 30/02 - Homopolymères ou copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant du phosphore
• C08J 9/14 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement utilisant des gaz de gonflage produits par un agent de gonflage introduit au préalable par un agent physique de gonflage organique
• B01J 23/755 - Nickel
• B01J 31/28 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant en outre des composés métalliques inorganiques non prévus dans les groupes du groupe du platine, du cuivre ou du groupe du fer
• B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
• B01J 35/00 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général
• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone

Abrégé

A stable carotenoid microcapsule having high bioavailability and a preparation method therefor. The method includes the following steps: a) mixing carotenoid crystals with an organic solvent, and dissolving the mixture to obtain a carotenoid solution; b) introducing the carotenoid solution and a grease into a dispersion system to fully disperse carotenoid into the grease, and vaporizing the organic solvent to obtain a carotenoid-containing dispersion liquid; c) mixing the carotenoid-containing dispersion liquid and a protective colloid aqueous solution, and emulsifying the mixture to obtain an emulsion; and d) performing spray granulation and drying to obtain a carotenoid microcapsule.

Classes IPC  ?

• A23K 40/30 - Mise en forme ou traitement des produits alimentaires pour animaux par encapsulationMise en forme ou traitement des produits alimentaires pour animaux par revêtement
• A23K 20/105 - Composés aliphatiques ou alicycliques
• A23K 20/147 - Dérivés polymériques, p. ex. peptides ou protéines
• A23K 20/158 - Acides grasGraissesProduits contenant des huiles ou des graisses
• A23K 20/163 - SucresPolysaccharides

Abrégé

Provided are a method and device for preparing adiponitrile. The method of the present disclosure comprises the steps of a first hydrocyanation reaction, an isomerization reaction and a second hydrocyanation reaction, wherein online Raman spectroscopy is used for detecting the content of a specific component in the system; and the reaction conditions are regulated based on the detection results, so as to achieve precise control of the materials in each step of the reaction system. The method of the present disclosure can reduce an amount of butadiene, thereby reducing the subsequent energy consumption needed for recycling butadiene and equipment investment after reaction; by monitoring the content of hydrocyanic acid in real time, the residue of hydrocyanic acid is reduced to a lower level, and the operation safety and the stability of a catalyst during reaction are improved; and the loss of the catalyst is reduced.

Classes IPC  ?

• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone

Abrégé

The present disclosure relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present disclosure is a mixture containing components A, B, and C; component A has a structure represented by the following general formula (1); component B has a structure represented by the following general formula (2); component C is silicone oil; RCON(CH3)CH2CH2SO3Na (1). The methionine preparation method provided in the present invention comprises subjecting methionine to crystallization and/or recrystallization in the presence of the additive provided by the present disclosure. The additive provided by the present disclosure results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good flowability. In addition, according to the methionine preparation method of the present disclosure, a crystallization system can operate continuously and stably for a long time without obvious foaming, and the crystallization process of the methionine product can proceed smoothly. The present disclosure relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present disclosure is a mixture containing components A, B, and C; component A has a structure represented by the following general formula (1); component B has a structure represented by the following general formula (2); component C is silicone oil; RCON(CH3)CH2CH2SO3Na (1). The methionine preparation method provided in the present invention comprises subjecting methionine to crystallization and/or recrystallization in the presence of the additive provided by the present disclosure. The additive provided by the present disclosure results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good flowability. In addition, according to the methionine preparation method of the present disclosure, a crystallization system can operate continuously and stably for a long time without obvious foaming, and the crystallization process of the methionine product can proceed smoothly.

Classes IPC  ?

• C12P 13/12 - MéthionineCystéineCystine
• C07C 319/26 - SéparationPurificationStabilisationEmploi d'additifs
• B01D 9/00 - Cristallisation

Abrégé

Disclosed in the present invention is a method for preparing 4-chloro-3,5-dimethylphenol by means of low-temperature chlorination. The method comprises: (1) subjecting 3,5-dimethylphenol and a chlorinating agent to a chlorination reaction at a low temperature until a solid is precipitated, and carrying out solid-liquid separation to obtain a solid crude product 1 and an intermediate mother solution; (2) further subjecting the intermediate mother solution to a chlorination reaction at a low temperature, and after the reaction is finished, carrying out final solid-liquid separation to obtain a solid crude product 2 and a final mother solution; and subjecting the solid crude product 1 and the solid crude product 2 to a post-treatment to obtain 4-chloro-3,5-dimethylphenol. By means of the present invention, by separating precipitated crystals in a timely manner during the reaction process, the wrapping of raw materials is reduced, and the conversion rate is improved.

Classes IPC  ?

• C07C 37/62 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone d'un cycle aromatique à six chaînons par introduction d'atomes d'halogènePréparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone d'un cycle aromatique à six chaînons par substitution d'atomes d'halogène par des atomes d'autres halogènes
• C07C 39/28 - Les atomes d'halogène étant tous liés au cycle l'halogène étant un atome de chlore

Abrégé

The present disclosure relates to a method for preparing taurine and a method for recovering a mother liquor thereof. The method for recovering the taurine mother liquor comprises: providing a taurine mother liquor, and mixing the taurine mother liquor and a treating agent to obtain a solid-containing suspension, wherein the treating agent is a water-soluble organic solvent or a mixture of the water-soluble organic solvent and water; filtering the suspension to obtain a first solid product and a first filtrate; and dissolving the first solid product with an ammonia source, and then filtering same to obtain a second solid product and a second filtrate.

Classes IPC  ?

• C07C 303/44 - SéparationPurification
• C07C 303/22 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides d'acides sulfoniques ou de leurs halogénures à partir d'acides sulfoniques par des réactions n'impliquant pas la formation de groupes sulfo ou halogénosulfonyle
• C07C 303/32 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides de sels d'acides sulfoniques

Abrégé

VV(90) of between 20 nm and 80 nm, and is clear, transparent, free of demulsification and high in bioavailability, can be stably stored for a long time at normal temperatures and in extreme temperature environments. In addition, the microemulsion is suitable for the pharmaceutical, cosmetic and food fields, especially for beverages, oral liquids and other products. Also provided in the present invention is a method for preparing the coenzyme Q10 microemulsion, which method is simple in equipment, low in cost and easy in operation.

Classes IPC  ?

• A61K 9/107 - Émulsions
• A61K 31/122 - Cétones ayant l'atome d'oxygène lié directement à un cycle, p. ex. quinones, vitamine K1, anthraline
• A61K 47/14 - Esters d’acides carboxyliques, p. ex. acides gras monoglycérides, triglycérides à chaine moyenne, parabènes ou esters d’acide gras de PEG
• A23L 2/52 - Addition d'ingrédients
• A23L 33/10 - Modification de la qualité nutritive des alimentsProduits diététiquesLeur préparation ou leur traitement en utilisant des additifs
• A61K 8/06 - Émulsions
• A61K 8/35 - Cétones, p. ex. quinones, benzophénone
• A61Q 19/00 - Préparations pour les soins de la peau

Abrégé

Disclosed in the present invention are a method for preparing a high-bulk-density ibuprofen spherical crystal and a product thereof. The preparation method comprises: (1) heating ibuprofen to a molten liquid state; and (2) pressurizing the ibuprofen in the molten liquid state, then adding same, via a liquid distributor, in a dropwise manner to a crystallizer containing water, carrying out crystallization while adding in a dropwise manner under stirring until the dropwise addition of the ibuprofen in the molten liquid state is completed, and reducing the rotation rate of stirring, carrying out crystal growing, and finally, carrying out a post-treatment on crystal slurry to obtain the ibuprofen spherical crystal with a bulk density of 0.50-0.70 g/mL, a tap density of 0.63-0.89 g/mL, a median particle size of 300-1000 μm, and a repose angle of 22-29°. The preparation method has a simple process, is free of additives and is suitable for industrial production. The prepared ibuprofen spherical crystal has a regular crystal habit, a smooth crystal face, a good fluidity, a high bulk density and a high product purity, and the product quality meets pharmacopoeia requirements CP2020, EP9.8, USP41, etc.

Classes IPC  ?

• C07C 51/43 - SéparationPurificationStabilisationEmploi d'additifs par changement de l'état physique, p. ex. par cristallisation
• C07C 57/30 - Composés non saturés comportant des groupes carboxyle liés à des atomes de carbone acycliques contenant des cycles aromatiques à six chaînons

Produits et services

Perfumery for cosmetics; food flavourings [essential oils]; perfumery; oils for perfumes and scents; flavourings for beverages [essential oils]; flavoring essence for tobacco; perfumes for industrial purposes; incense; air fragrancing preparations; extracts of flowers [perfumes]. Tea; sugar; molasses for food; cereal-based snack food; instant rice; thickening agents for cooking foodstuffs; condiments; leaven; aromatic preparations for food; essences for foodstuffs, except etheric essences and essential oils.

Abrégé

A porous polymer having a pore volume of 0.3-2.5 cm3/g, the porous polymer comprising pores having a first pore diameter and pores having a second pore diameter, wherein the pore volume ratio of the pores having the first pore diameter to the pores having the second pore diameter is 1-10:1. The porous polymer is obtained by means of self-polymerization or copolymerization of at least one phosphorus ligand, and the phosphorus content of the porous polymer is 1-5 mmol/g. A porous polymer-nickel catalyst prepared from the porous polymer has significantly improved water resistance, can reduce the consumption of phosphorus ligands, omits the steps of water removal of raw materials and water control of a reaction system, and greatly saves on process equipment investment. In addition, when used for preparing adiponitrile by using butadiene, the catalyst has a high catalytic activity, a high reaction selectivity and high linearity, and is easy to recycle and reuse.

Classes IPC  ?

• C08F 230/02 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et contenant du phosphore, du sélénium, du tellure ou un métal contenant du phosphore
• C08J 9/00 - Mise en œuvre de substances macromoléculaires pour produire des matériaux ou objets poreux ou alvéolairesLeur post-traitement
• B01J 31/22 - Complexes organiques
• B01J 31/18 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des complexes de coordination contenant de l'azote, du phosphore, de l'arsenic ou de l'antimoine
• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone
• C07C 255/07 - Mononitriles
• C07C 255/04 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques d'un squelette carboné acyclique et saturé contenant deux groupes cyano liés au squelette carboné
• B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
• C08L 43/02 - Homopolymères ou copolymères de monomères contenant du phosphore

Abrégé

Disclosed are a high-thermal-conductivity reinforced polyphenylene sulfide composite material and a preparation method therefor, the high-thermal-conductivity reinforced polyphenylene sulfidecomposite material comprising the following raw materials by weight percentage: 30-50% of a polyphenylene sulfide base material; 5-30% of a surface carbonized reinforcing body; and 20-60% of a heat-conducting filler, the surface carbonized reinforcing body being a reinforcing body the outer surface of which is coated with a carbon layer. The preparation method comprises: blending a monomer raw material, a reinforcing body and an optionally added two-dimensional sheet-like heat-conducting filler, and passing through in-situ polymerization and carbonization to obtain a surface carbonized reinforcing body; and by using a polyphenylene sulfide base material, the heat-conducting filler and the prepared surface carbonized reinforcement as raw materials, passing through extrusion granulation to prepare and obtain a high-thermal-conductivity reinforced polyphenylene sulfide composite material. In the high-thermal-conductivity reinforced polyphenylene sulfide composite material disclosed, excellent processability and mechanical properties of the polyphenylene sulfide composite material are ensured while significantly improving the thermal conductivity of the polyphenylene sulfide composite material.

Classes IPC  ?

• C08L 81/02 - Polythio-éthersPolythioéther-polyéthers
• C08K 9/02 - Ingrédients traités par des substances inorganiques
• C08J 5/06 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes utilisant des matériaux fibreux prétraités
• C08J 5/08 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes utilisant des matériaux fibreux prétraités des fibres de verre
• C08J 5/10 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes caractérisé par les additifs utilisés dans le mélange de polymères
• C08K 7/06 - Éléments
• C08K 3/04 - Carbone
• C08K 3/34 - Composés contenant du silicium
• C08K 3/38 - Composés contenant du bore
• C09K 5/14 - Substances solides, p. ex. pulvérulentes ou granuleuses

Produits et services

Vitamins for use in the manufacture of food supplements; vitamins for the food industry; vitamins for use in the manufacture of pharmaceuticals; starch for industrial purposes; glucose for industrial purposes; industrial chemicals; synthetic resins, unprocessed; artificial resins, unprocessed; nylon 66 salt; protein [raw material].

Produits et services

Heterocyclic compound; industrial chemicals; vitamins for use in the manufacture of food supplements; starch for industrial purposes; phenol for industrial purposes; protein [raw material]; alkaloids; sugar alcohol; amino acids; aldehydes.

Produits et services

(1) Vitamins for use in the manufacture of food supplements; vitamins for the food industry; vitamins for use in the manufacture of pharmaceuticals; starch paste for industrial purposes; sago palm starch for industrial purposes; potato starch for industrial purposes; glucose for the food industry; chemical preservatives for the food industry; catalysts for use in the manufacture of industrial chemicals; chemical agents for acid removal in industrial manufacturing applications; synthetic resins, unprocessed; artificial resins, unprocessed; nylon 66 salt; proteins for use in the manufacture of food products; unprocessed protein plastics; milk proteins.

Produits et services

Perfumery for cosmetics; food flavourings prepared from essential oils; perfumery; oils for perfumes and scents; flavourings for beverages prepared from essential oils; flavoring essence for tobacco being essential oils; perfumes for industrial purposes; incense; air fragrancing preparations; extracts of flowers being perfumes

Produits et services

Vitamins for use in the manufacture of food supplements; vitamins for the food industry; vitamins for use in the manufacture of pharmaceuticals; starch for industrial purposes; glucose for industrial purposes; industrial chemicals; synthetic resins, unprocessed; artificial resins, unprocessed; organic acid salts, namely, nylon 66 salt; raw materials, namely, protein for industrial use

Abrégé

A method for preparing sodium taurine as a taurine intermediate is provided in the present disclosure. The method comprises the following steps: providing sodium hydroxyethyl sulfonate and an ammonia source; and placing the sodium hydroxyethyl sulfonate and the ammonia source in an aminolysis reactor for an aminolysis reaction to obtain a mixture containing sodium taurine as a taurine intermediate, wherein the molar ratio of ammonia in the ammonia source to the sodium hydroxyethyl sulfonate is greater than or equal to 25:1. A method for preparing taurine is further provided.

Classes IPC  ?

• C07C 309/14 - Acides sulfoniques ayant des groupes sulfo liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé contenant des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso, liés au squelette carboné contenant des groupes amino liés au squelette carboné
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• B01J 3/00 - Procédés utilisant une pression supérieure ou inférieure à la pression atmosphérique pour obtenir des modifications chimiques ou physiques de la matièreAppareils à cet effet
• B01D 61/44 - Électrodialyse à sélectivité ionique
• B01D 3/06 - Distillation par évaporation brusque (flash)

Abrégé

A stable carotenoid microcapsule having high bioavailability and a preparation method therefor. The method comprises the following steps: a) mixing carotenoid crystals with an organic solvent, and dissolving the mixture to obtain a carotenoid solution; b) introducing the carotenoid solution and hot grease into a dispersion system to fully disperse carotenoid into the hot grease, and vaporizing the organic solvent to obtain a carotenoid mixed dispersion liquid; c) mixing the carotenoid mixed dispersion liquid and a protective colloid aqueous solution, and emulsifying the mixture to obtain an emulsion; and d) performing spray granulation and drying to obtain a carotenoid microcapsule.

Classes IPC  ?

• A61K 9/50 - Microcapsules
• A61K 9/51 - Nanocapsules
• A61K 9/52 - Préparations en capsules, p. ex. de gélatine, de chocolat du type à libération prolongée ou discontinue
• A61K 9/48 - Préparations en capsules, p. ex. de gélatine, de chocolat
• A61K 31/047 - Composés hydroxylés, p. ex. alcoolsLeurs sels, p. ex. alcoolates ayant plusieurs groupes hydroxyle, p. ex. sorbitol
• A61K 31/015 - Hydrocarbures carbocycliques
• A61K 47/44 - Huiles, graisses ou cires couvertes par plus d’un des groupes Huiles, graisses ou cires naturelles ou naturelles modifiées, p. ex. huile de ricin, huile de ricin polyéthoxylée, cire de lignite, lignite, gomme-laque, colophane, cire d’abeille ou lanoline
• A61K 47/22 - Composés hétérocycliques, p. ex. acide ascorbique, tocophérol ou pyrrolidones
• A61K 35/00 - Préparations médicinales contenant des substances ou leurs produits de réaction de constitution non déterminée
• A61K 9/00 - Préparations médicinales caractérisées par un aspect particulier

Abrégé

The present disclosure discloses a semi-aromatic polyamide and a preparation method therefor. The semi-aromatic polyamide is obtained by polymerization reaction using a diamine, a dibasic acid and a monoacid as main raw materials while adding a special end-capping agent. The semi-aromatic polyamide prepared according to the present disclosure has good thermal stability, a yellowness index of less than 20, a glass transition temperature of 90° C. or above, and a melting point of 300° C. or above, and can be applied to spare parts for fuel pipelines in automobiles, and electronic and electrical industries such as LED panels.

Classes IPC  ?

• C08G 69/48 - Polymères modifiés par post-traitement chimique
• C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
• C08G 69/28 - Procédés de préparation
• C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques

Abrégé

Disclosed in the present invention is a method for preparing epsilon-caprolactone by using an in-situ peroxide. The method efficiently utilizes an in-situ peroxide obtained in a process of oxidizing alcohol by oxygen to oxidize cyclohexanone into epsilon-caprolactone, i.e., under the catalysis of a catalyst, an alcohol is oxidized into a corresponding ketone while substances such as hydroxyl peroxide or hydrogen peroxide generated in the process are fully utilized, so that a Baeyer-Villiger oxidation reaction from cyclohexanone to epsilon-caprolactone is realized. Compared with a previous epsilon-caprolactone synthesis method, the present method has the advantages that the product yield is remarkably increased, the use efficiency of alcohol is further improved, raw materials and reagents are cheap and easy to obtain, operation is easy, reaction conditions are mild, and the method is clean and environmentally friendly.

Classes IPC  ?

• C07D 313/04 - Cycles à sept chaînons non condensés avec d'autres cycles

Abrégé

A recombinant microorganism, a preparation method thereof and its application in the production of coenzyme Q10. Specifically, the present disclosure provides a method of exogenously introducing a gene encoding the global regulatory protein irrE to construct a recombinant microorganism. This recombinant microorganism is suitable for producing coenzyme Q10 by fermentation method, and is particularly suitable for producing oxidized coenzyme Q10. The recombinant microorganism of the present disclosure has stress resistance, and has good tolerance against harsh environments including high osmotic pressure and high redox potential, thus making it possible to significantly increase the yield of coenzyme Q10, especially the yield of oxidized coenzyme Q10.

Classes IPC  ?

• C12N 15/74 - Vecteurs ou systèmes d'expression spécialement adaptés aux hôtes procaryotes autres que E. coli, p. ex. Lactobacillus, Micromonospora
• C07K 14/245 - Escherichia (G)
• C12P 7/66 - Préparation de composés organiques contenant de l'oxygène contenant la structure quinoïde
• C12N 1/20 - BactériesLeurs milieux de culture

Abrégé

Disclosed are a selective hydrogenation catalyst, a preparation method therefor and a use thereof, which belong to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier supporting the active component, wherein the active component is transition metal particles; and the carrier is pre-modified with a flexible chain ligand, one end of which is evenly distributed on the surface of the carrier, and the other end of which is coordinated on the transition metal. When used for a catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyne-2-ol, the catalyst of the present invention has good stability, and high selectivity after being used for a long time, and the quality of a hydrogenation product can thus be ensured.

Classes IPC  ?

• B01J 31/22 - Complexes organiques
• C07C 29/17 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par hydrogénation de liaisons doubles ou triples carbone-carbone
• C07C 33/02 - Alcools acycliques à liaisons doubles carbone-carbone
• C07C 33/025 - Alcools acycliques à liaisons doubles carbone-carbone à une seule liaison double

Abrégé

The present invention discloses a selective hydrogenation catalyst and a preparation method and an application thereof, belonging to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier for supporting the active component, wherein the active component is a transition metal particle, the carrier is modified by a flexible chain ligand in advance, one end of the flexible chain ligand is uniformly distributed on the surface of the carrier, and the other end of the flexible chain ligand is coordinated on a transition metal. When the catalyst is used for catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyn-2-ol, the stability is good, the catalyst still has high selectivity after being used for a long time, and the quality of a hydrogenation product can be guaranteed.

Classes IPC  ?

• B01J 31/22 - Complexes organiques
• B01J 23/44 - Palladium
• B01J 31/18 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des complexes de coordination contenant de l'azote, du phosphore, de l'arsenic ou de l'antimoine
• B01J 31/02 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des composés organiques ou des hydrures métalliques
• C07C 29/157 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction exclusivement des oxydes de carbone avec de l'hydrogène ou des gaz contenant de l'hydrogène caractérisée par le catalyseur utilisé contenant des métaux du groupe du fer, des métaux du groupe du platine, ou leurs composés contenant des métaux du groupe du platine ou leurs composés
• B01J 37/02 - Imprégnation, revêtement ou précipitation

Abrégé

The present invention relates to a method for preparing an oxazole compound. An additive represented by a formula (I) or (II) or (III) is added into an organic solvent and organic alkali (especially triethylamine), an organic solution of phosgene or diphosgene or triphosgene is dropwise added to perform a cyclization reaction with a compound (IV), and thus a product (V) at a high yield can be obtained and the generation of byproducts can be greatly inhibited. The reaction conditions in the present invention are mild, and compared with a method without addition of additives, the technical solution in the present invention can improve the yield of the product (V) to 95% or more and reduce the byproducts by 10% or more.

Classes IPC  ?

• C07D 263/42 - Un atome d'oxygène lié en position 5

Abrégé

Provided are a method and device for preparing adiponitrile. The preparation method of the present invention comprises the steps of a first hydrocyanation reaction, an isomerization reaction and a second hydrocyanation reaction, wherein on-line Raman spectroscopy is used for detecting the content of a specific ingredient in the system; and on the basis of the detection results, the reaction conditions are regulated, so as to achieve precise control over a substance in each step in the reaction system. The method of the present invention can reduce the amount of butadiene, thereby reducing the subsequent energy consumption needed for recycling butadiene and equipment investment after reaction; by means of the real time monitoring of the content of hydrocyanic acid, the residue of hydrocyanic acid is reduced to a lower level, and the operation safety and the stability of a catalyst during reaction are improved; and the loss of the catalyst is reduced.

Classes IPC  ?

• C07C 253/10 - Préparation de nitriles d'acides carboxyliques par addition d'acide cyanhydrique ou de ses sels à des composés non saturés à des composés contenant des liaisons doubles carbone-carbone
• C07C 255/04 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques d'un squelette carboné acyclique et saturé contenant deux groupes cyano liés au squelette carboné

Abrégé

Disclosed is a catalyst suitable for the continuous production of isopentenal or isopentenol. The catalyst is composed of a ceramic corrugated plate carrier and a metal oxide active layer coated on the surface of the carrier, wherein the metal oxide active layer is made up of a metal oxide formed from an active ingredient titanium and additionally at least four metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum. The catalyst can be used for the preparation of isopentenal or isopentenol by means of a catalyzed rearrangement reaction.

Classes IPC  ?

• B01J 23/889 - Manganèse, technétium ou rhénium
• C07C 29/56 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par isomérisation
• C07C 45/54 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par pyrolyse, réarrangement ou décomposition de composés contenant des atomes d'oxygène liés par des liaisons doubles, p. ex. d'esters
• C07C 47/21 - Composés non saturés comportant des groupes —CHO liés à des atomes de carbone acycliques avec uniquement des liaisons doubles carbone-carbone comme insaturation
• C07C 33/03 - Alcools acycliques à liaisons doubles carbone-carbone à une seule liaison double en position bêta, p. ex. alcool allylique, alcool méthallylique

Abrégé

The present invention relates to a catalyst for a phosgenation reaction and a phosgenation reaction method. The catalyst for a phosgenation reaction of the present invention is a phosphinyl ionic liquid as represented by general formula (I). In addition, the phosgenation reaction method provided by the present invention is a phosgenation reaction method using phosgene as a chlorination agent, and in the phosgenation reaction method, the catalyst for a phosgenation reaction as provided by the present invention is used. Compared with the use of the catalyst of triphenylphosphine oxide, etc., in a phosgenation reaction, the catalyst provided by the present invention can result in the charge rate of phosgene in a phosgenation reaction being reduced and the reaction time being shortened, thereby indicating a higher reaction efficiency and a higher atomic utilization of phosgene.

Classes IPC  ?

• B01J 31/24 - Phosphines
• C07C 17/00 - Préparation d'hydrocarbures halogénés
• C07C 17/013 - Préparation d'hydrocarbures halogénés par addition d'halogènes
• C07C 17/18 - Préparation d'hydrocarbures halogénés par remplacement par des halogènes d'atomes d'oxygène de groupes carbonyle
• C07C 21/04 - Chloro-alcènes
• C07C 22/00 - Composés cycliques contenant des atomes d'halogène liés à un atome de carbone acyclique
• C07C 22/04 - Composés cycliques contenant des atomes d'halogène liés à un atome de carbone acyclique ayant une insaturation dans les cycles contenant des cycles aromatiques à six chaînons
• C07C 51/60 - Préparation d'halogénures d'acides carboxyliques par conversion d'acides carboxyliques ou de leurs anhydrides en halogénures ayant la même partie acide carboxylique
• C07H 1/00 - Procédés de préparation des dérivés du sucre
• C07H 13/04 - Composés contenant des radicaux saccharide estérifiés soit par l'acide carbonique ou ses dérivés, soit par des acides organiques, p. ex. acides phosphoniques par des acides carboxyliques comportant les radicaux carboxyle estérifiants liés à des atomes de carbone acycliques
• C07B 39/00 - Halogénation
• C07C 53/38 - Halogénures d'acyle

Abrégé

32233Na (1). The methionine preparation method provided in the present invention comprises crystallization and/or recrystallization of methionine in the presence of the additive provided by the present invention. The additive provided by the present invention results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good fluidity. In addition, according to the methionine preparation method of the present invention, a crystallization system can operate continuously and stably for a long time without obvious foaming, and the crystallization process of the methionine product can proceed smoothly.

Classes IPC  ?

• C07C 319/28 - SéparationPurification
• C07C 323/58 - Thiols, sulfures, hydropolysulfures ou polysulfures substitués par des halogènes, des atomes d'oxygène ou d'azote ou par des atomes de soufre ne faisant pas partie de groupes thio contenant des groupes thio et des groupes carboxyle liés au même squelette carboné ayant les atomes de soufre des groupes thio liés à des atomes de carbone acycliques du squelette carboné le squelette carboné étant substitué de plus par des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso avec des groupes amino liés au squelette carboné
• C07C 319/26 - SéparationPurificationStabilisationEmploi d'additifs

Abrégé

The present application relates to a method for preparing taurine and a method for recovering a mother liquor thereof. The method for recovering the taurine mother liquor comprises: providing a taurine mother liquor, and mixing the taurine mother liquor and a treating agent to obtain a solid-containing suspension, wherein the treating agent is a water-soluble organic solvent or a mixture of the water-soluble organic solvent and water; filtering the suspension to obtain a first solid product and a first filtrate; and dissolving the first solid product with an ammonia source, and then filtering same to obtain a second solid product and a second filtrate.

Classes IPC  ?

• C07C 309/14 - Acides sulfoniques ayant des groupes sulfo liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé contenant des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso, liés au squelette carboné contenant des groupes amino liés au squelette carboné
• C07C 303/44 - SéparationPurification

Abrégé

The present invention discloses a method for preparation of vitamin and carotenoid powder; the vitamin and carotenoid powder comprises vitamin, carotenoid microcapsule and physical gel protection film covered on the surface of the vitamin and carotenoid microcapsule; the physical gel protection film is made from super-molecular system; the super-molecular system comprises the following constituents of parts in weight: vegetable oil: 6-30 parts; gel: 0.5-3 parts and antioxidant: 0.5-3 parts. The hot super-molecular solution is sprayed on the surface of cold vitamin and carotenoid microcapsule during preparation to form a specific 3D network structure that is used to bind the liquefied vegetable oil to form a physical gel protection film; the physical gel protection film has improved product storage stability as well as the its stability for application in feedstuff, food and health care products.

Classes IPC  ?

• A23K 20/174 - Vitamines
• A23K 40/30 - Mise en forme ou traitement des produits alimentaires pour animaux par encapsulationMise en forme ou traitement des produits alimentaires pour animaux par revêtement
• A23P 10/30 - Mise en capsules de particules, p. ex. additifs alimentaires
• A23L 33/15 - Vitamines
• A61K 9/14 - Préparations médicinales caractérisées par un aspect particulier à l'état particulaire, p. ex. poudres
• A61K 31/015 - Hydrocarbures carbocycliques

Abrégé

The present application relates to a method for preparing 3-hydroxypropionitrile. The method for preparing 3-hydroxypropionitrile comprises: reacting acrylonitrile with a supercritical water, and separating the obtained reaction solution to obtain the 3-hydroxypropionitrile.

Classes IPC  ?

• C07C 253/30 - Préparation de nitriles d'acides carboxyliques par des réactions n'impliquant pas la formation de groupes cyano
• C07C 255/12 - Nitriles d'acides carboxyliques ayant des groupes cyano liés à des atomes de carbone acycliques contenant des groupes cyano et des atomes d'oxygène, liés par des liaisons simples, liés au même squelette carboné acyclique saturé contenant des groupes cyano et des groupes hydroxy liés au squelette carboné

Abrégé

Disclosed is a method for preparing a lactone compound, the method comprising performing an oxidation reaction on a cyclic ketone using molecular oxygen in the presence of an organic nitrogen-oxygen radical precursor, a free radical initiator, an alcohol and a Sn-based catalyst, or performing an oxidation reaction on a cyclic alcohol using molecular oxygen in the presence of an organic nitrogen-oxygen radical precursor, a Sn-based catalyst and a free radical initiator.

Classes IPC  ?

• C07D 313/04 - Cycles à sept chaînons non condensés avec d'autres cycles
• C07D 313/10 - Cycles à sept chaînons condensés avec des carbocycles ou avec des systèmes carbocycliques condensés avec deux cycles à six chaînons

Abrégé

Provided by the present disclosure are a method and a device for preparing 2-hydroxy-4-methylthiobutyric acid and intermediates thereof; the intermediates for preparing 2-hydroxy-4-methylthiobutyric acid comprise 3-methylthiopropionaldehyde and 2-hydroxy-4-methylthiobutyronitrile. The method for preparing 2-hydroxy-4-methylthiobutyric acid provided by the present disclosure comprises: step (1), a step of reacting acrolein with methyl mercaptan to prepare 3-methylthiopropionaldehyde; step (2), a step of reacting 3-methylthiopropionaldehyde with hydrocyanic acid to prepare 2-hydroxy-4-methylthiobutyronitrile; and step (3), a step of hydrating 2-hydroxy-4-methylthiobutyronitrile by using sulfuric acid and then hydrolyzing to prepare 2-hydroxy-4-methylthiobutyric acid; wherein in steps (1), (2) and (3), the reaction status of the materials is detected online, and the proportions of the materials are controlled according to the detection results such that reactions are performed completely.

Classes IPC  ?

• C07C 319/20 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de sulfures par des réactions n'impliquant pas la formation de groupes sulfure
• C07C 319/18 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de sulfures par addition de thiols à des composés non saturés
• B01J 19/24 - Réacteurs fixes sans élément interne mobile
• C07C 319/28 - SéparationPurification
• C07C 323/52 - Thiols, sulfures, hydropolysulfures ou polysulfures substitués par des halogènes, des atomes d'oxygène ou d'azote ou par des atomes de soufre ne faisant pas partie de groupes thio contenant des groupes thio et des groupes carboxyle liés au même squelette carboné ayant les atomes de soufre des groupes thio liés à des atomes de carbone acycliques du squelette carboné le squelette carboné étant acyclique et saturé

Produits et services

Ropes; Sails; String; Tents; Netting; Plastic fibers for textile use; Raw fibrous textile; Textile fibers; Twine for nets; Wadding for filtering

Produits et services

plastic substances, semi-processed; insulating materials; synthetic resins, semi-processed; elastic threads, other than for textile use; plastic fibers, other than for textile use; elastic yarns, other than for textile use; artificial resins, semi-processed; filtering materials of semi-processed foams of plastic; flexible hoses, not of metal; paper for electrical capacitors. wadding for filtering; tents; ropes; nets; plastic fibers for textile use; twine for nets; raw fibrous textile; sails; string; textile fibers.

Produits et services

Artificial resins, semi-processed; Elastic threads, other than for textile use; Elastic yarns, other than for textile use; Flexible hoses, not of metal; Insulating materials; Paper for electrical capacitors; Plastic fibers, other than for textile use; Plastic substances, semi-processed; Semi-processed foams of plastic in the nature of filtering materials in Gas-solid and liquid-solid filtration industry; Synthetic resins, semi-processed

Abrégé

The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.

Classes IPC  ?

• B01J 23/00 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe
• B01J 23/889 - Manganèse, technétium ou rhénium
• C07C 29/56 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par isomérisation
• B01J 23/881 - Molybdène et fer
• B01J 37/02 - Imprégnation, revêtement ou précipitation
• B01J 37/08 - Traitement thermique
• B01J 35/04 - Structures non pleines, p.ex. tamis, grilles, nids d'abeilles
• B01J 21/06 - Silicium, titane, zirconium ou hafniumLeurs oxydes ou hydroxydes

Abrégé

Provided is a method for catalytically synthesizing ketoisophorone using a perovskite-type composite oxide. The method involves subjecting α-isophorone, acting as a raw material, to a continuous oxidation reaction in a trickle bed reactor in the absence of a solvent, wherein a perovskite-type composite oxide is used as a catalyst and molecular oxygen or air is used as an oxidizing agent to synthesize ketoisophorone. The method has mild reaction conditions, a high catalytic efficiency, a good selectivity, and a high catalyst stability, and is suitable for industrial production.

Classes IPC  ?

• B01J 23/83 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des terres rares ou des actinides
• B01J 23/889 - Manganèse, technétium ou rhénium
• B01J 23/89 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer combinés à des métaux nobles
• C07C 45/34 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par oxydation avec l'oxygène moléculaire de restes —CHx dans des composés non saturés
• C07C 49/603 - Composés non saturés comportant un groupe cétone faisant partie d'un cycle d'un cycle à six chaînons, p. ex. méthides de quinones

Abrégé

The present disclosure relates to a method for preparing isophorone diamine by means of a hydrogenation reduction of isophorone nitrile imine. The hydrogenation reduction is continuously carried out in a multi-stage bubble column reactor loaded with a supported alkaline cobalt-based catalyst, wherein isophorone nitrile imine is successively in countercurrent contact with hydrogen in each stage of the reactor to carry out a hydrogenation reduction reaction, so as to obtain the isophorone diamine. The preparation method solves the problem of back-mixing, and further improves the conversion rate and the cis/trans ratio of the product.

Classes IPC  ?

• C07C 209/52 - Préparation de composés contenant des groupes amino liés à un squelette carboné par réduction d'acides carboxyliques ou de leurs esters en présence d'ammoniac ou d'amines ou par réduction de nitriles, d'amides d'acides carboxyliques, d'imines ou d'imino-éthers par réduction d'imines ou d'imino-éthers
• B01J 23/78 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des métaux alcalins ou alcalino-terreux ou du béryllium
• B01J 35/04 - Structures non pleines, p.ex. tamis, grilles, nids d'abeilles
• C07C 209/48 - Préparation de composés contenant des groupes amino liés à un squelette carboné par réduction d'acides carboxyliques ou de leurs esters en présence d'ammoniac ou d'amines ou par réduction de nitriles, d'amides d'acides carboxyliques, d'imines ou d'imino-éthers par réduction de nitriles

Abrégé

Provided are a preparation method for a palladium-on-carbon catalyst, a palladium-on-carbon catalyst obtained from the preparation method, and an application thereof. Compared to the prior art, the preparation method comprises performing, by means of electrochemical in-situ reduction, in-situ reduction on palladium ions adsorbed on a carrier. The method achieves faster reduction than the conventional method of adding a reducing agent or electrochemical deposition, uses sheet-like metallic palladium to increase the contact area with the carrier, and prevents metallic palladium from migrating or falling off, thereby improving stability, having a large utilization rate of palladium atoms, and providing superior catalytic performance. In addition, the invention achieves a stable increase in the conversion rate and the yield rate without adding other metals on a catalyst, thereby avoiding the separation problem or palladium metal recovery problem that exists in conventional preparation methods.

Classes IPC  ?

• B01J 23/42 - Platine
• B01J 37/34 - Irradiation ou application d'énergie électrique, magnétique ou ondulatoire, p. ex. d'ondes ultrasonores
• B01J 35/10 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides caractérisés par leurs propriétés de surface ou leur porosité
• B01J 35/02 - Catalyseurs caractérisés par leur forme ou leurs propriétés physiques, en général solides
• B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p. ex. nanocomposites
• B82Y 40/00 - Fabrication ou traitement des nanostructures
• C07C 29/17 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par hydrogénation de liaisons doubles ou triples carbone-carbone
• C07C 33/14 - Alcools contenant des cycles autres que des cycles aromatiques à six chaînons contenant des cycles à six chaînons
• C07C 33/03 - Alcools acycliques à liaisons doubles carbone-carbone à une seule liaison double en position bêta, p. ex. alcool allylique, alcool méthallylique
• C07C 33/02 - Alcools acycliques à liaisons doubles carbone-carbone
• C07C 33/035 - Alcènediols

Abrégé

66.

Classes IPC  ?

• C07D 263/42 - Un atome d'oxygène lié en position 5
• C07D 213/66 - Un atome d'oxygène lié en position 3 ou 5 comportant en position 3 un atome d'oxygène et en chacune des positions 4 et 5 un atome de carbone lié à un atome d'oxygène, de soufre ou d'azote, p. ex. pyridoxal

Abrégé

abcdeff, where X is selected from at least one of Fe, Co, and Ni, Y is selected from at least one of Na, K, Cs, Ba, La, and Ce, Z is selected from at least one of V, W, and Cr, a:b:c:d:e = 12:(0.5-2.5):(0.5-3):(0.005-0.5):(0.5-10), and f is the total number of oxygen atoms required to satisfy the valences of other elements.

Classes IPC  ?

• B01J 23/78 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des métaux alcalins ou alcalino-terreux ou du béryllium
• B01J 23/843 - Arsenic, antimoine ou bismuth
• B01J 23/888 - Tungstène
• C07C 27/12 - Procédés impliquant la production simultanée de plusieurs classes de composés contenant de l'oxygène par oxydation d'hydrocarbures avec l'oxygène
• C07C 45/35 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par oxydation avec l'oxygène moléculaire de restes —CHx dans des composés non saturés dans le propène ou l'isobutène
• C07C 47/22 - Aldéhyde acryliqueAldéhyde méthacrylique
• C07C 57/04 - Acide acryliqueAcide méthacrylique

Abrégé

The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.

Classes IPC  ?

• C07C 319/20 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de sulfures par des réactions n'impliquant pas la formation de groupes sulfure
• C01D 5/02 - Préparation de sulfates à partir de sels de métaux alcalins et d'acide sulfurique ou de bisulfatesPréparation de bisulfates

Abrégé

xx, where 0 < x ≤ 3, and the carrier is a metal oxide having an oxygen vacancy on the surface thereof; the elementary Mo in the active component molybdenum is combined with the oxygen vacancy to form a Mo-[O]-M structure, wherein [O] represents the oxygen vacancy, and M is a metal element in the carrier, and the active component molybdenum is distributed on the surface of the carrier in the form of nanoparticles.

Classes IPC  ?

• B01J 23/28 - Molybdène
• B01J 23/889 - Manganèse, technétium ou rhénium
• B01J 23/31 - Chrome, molybdène ou tungstène combinés au bismuth

Abrégé

3 are identical groups, partially identical groups, or different groups from each other. According to the method, the reaction conversion rate and selectivity are greatly improved; moreover, it is easy to realize industrial application.

Classes IPC  ?

• C07H 1/06 - SéparationPurification
• C07H 5/02 - Composés contenant des radicaux saccharide dans lesquels les liaisons carbone-oxygène ont été remplacées par le même nombre de liaisons carbone-hétéro-atomes à des atomes d'halogènes, d'azote, de soufre, de sélénium ou de tellure à des halogènes

Abrégé

1/2. The present invention can efficiently extract two products, namely coenzyme Q10 and a phospholipid, from the coenzyme Q10 fermentation bacterium powder; the process thereof is highly operable, easy to be industrialized, and can provide a product with high purity and yield, having great economic benefit.

Classes IPC  ?

• C12P 7/66 - Préparation de composés organiques contenant de l'oxygène contenant la structure quinoïde
• C07C 46/10 - SéparationPurificationStabilisationEmploi d'additifs

Abrégé

Disclosed is a method for preparing alkynol, which method comprises subjecting a saturated ketone and acetylene to an ethymylation reaction in liquid ammonia under the action of a polymerization inhibitor and a catalyst, and after the reaction is complete, subjecting same to a post-treatment to obtain the alkynol. The preparation method avoids the occurrence of a polymerization side reaction during the ethymylation reaction, thereby improving the conversion rate of the raw materials and the yield of the alkynol.

Classes IPC  ?

• C07C 29/40 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par des réactions augmentant le nombre d'atomes de carbone avec formation de groupes hydroxyle, ces groupes pouvant être produits par l'intermédiaire de dérivés de groupes hydroxyle, p. ex. du dérivé O-métal par réactions avec des aldéhydes ou des cétones avec des composés contenant des liaisons carbone-métal
• C07C 29/94 - Emploi d'additifs, p. ex. pour la stabilisation
• C07C 33/042 - Alcools acycliques à liaisons triples carbone-carbone à une seule liaison triple

Abrégé

A hydroformylation catalyst, a preparation method therefor and use thereof. The hydroformylation catalyst comprises an active component (20) and a carrier (10) carrying the active component (20). The active component (20) comprises a transition metal (22) as a central atom and a polyhydroxy aromatic ring group (24) bonded to the transition metal (22). The transition metal (22) and the polyhydroxy aromatic ring group (24) are bonded by means of at least one of metal-hydroxyl coordination bond and metal-oxygen covalent bond. The active component (20) comprises at least one metal-hydroxyl coordination bond and at least one metal-oxygen covalent bond.

Classes IPC  ?

• B01J 31/22 - Complexes organiques
• C07C 45/50 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par réaction avec le monoxyde de carbone par synthèse oxo
• C07C 47/02 - Composés saturés comportant des groupes —CHO liés à des atomes de carbone acycliques ou à de l'hydrogène

Abrégé

The present invention provides an ammonolysis reaction system, comprising: an ammonolysis reactor, which is a vessel for an ammonolysis reaction, the ammonolysis reaction using ammonia as an aminating agent; an ammonia separation device connected to the ammonolysis reactor and used for separating the ammonia that does not participate in the reaction after the ammonolysis reaction to obtain an ammonia-containing gaseous substance; and a compression device separately connected to the ammonia separation device and the ammonolysis reactor, and used for compressing the ammonia-containing gaseous substance obtained by separation to obtain a supercritical fluid, and circulating the supercritical fluid to the ammonolysis reactor. The present invention also provides methods for preparing a taurine intermediate taurine sodium and taurine by using the ammonolysis reaction system.

Classes IPC  ?

• C07C 303/32 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides de sels d'acides sulfoniques
• C07C 309/14 - Acides sulfoniques ayant des groupes sulfo liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé contenant des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso, liés au squelette carboné contenant des groupes amino liés au squelette carboné

Abrégé

Provided is a method for preparing sodium taurate as a taurine intermediate. The method comprises the following steps: providing sodium hydroxyethyl sulfonate and an ammonia source; and placing the sodium hydroxyethyl sulfonate and the ammonia source in an aminolysis reactor for an aminolysis reaction to obtain a mixture containing sodium taurate as a taurine intermediate, wherein the molar ratio of ammonia in the ammonia source to the sodium hydroxyethyl sulfonate is 25:1 or above. Also provided is a method for preparing taurine.

Classes IPC  ?

• C07C 303/32 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides de sels d'acides sulfoniques
• C07C 309/14 - Acides sulfoniques ayant des groupes sulfo liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé contenant des atomes d'azote, ne faisant pas partie de groupes nitro ou nitroso, liés au squelette carboné contenant des groupes amino liés au squelette carboné

Abrégé

The present invention provides a method for synthesizing isopentenol by isomerization of methyl butynol. In the method, the catalyst used is a mixed catalyst composed of a primary catalyst, an auxiliary catalyst and an organic acid. The reaction temperature is 70-105°C under normal pressure. The selectivity of isopentenal can reach 95% or more, the conversion rate of methyl butynol can reach 90% or more, and the yield is 85% or more. The invention produces less waste. For each batch of 260 g of raw materials, the produced waste is 4.96-7.2 g. The raw material of the invention, methyl butynol, has a low water content requirement, where a water content of less than 1% is sufficient, and can therefore reduce costs.

Classes IPC  ?

• C07C 45/00 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés
• C07C 47/21 - Composés non saturés comportant des groupes —CHO liés à des atomes de carbone acycliques avec uniquement des liaisons doubles carbone-carbone comme insaturation

Abrégé

The present invention provides a catalyst and method for preparing isopentyl diol, the catalyst being a supported catalyst; said supported catalyst consists of active metal and metal-organic framework materials; the method uses 3-methyl-3-butene-1-ol and water as raw materials, and isopentyl diol is prepared under the effect of the described catalyst. The beneficial effects of the present invention are: the present invention uses a supported catalyst to prepare isopentyl diol, the amount of catalyst used is small, the yield is high and product purity is high, and the reaction is completed within 6 hours, at high reaction efficiency, which is advantageous to industrial production. The method has a mild reaction temperature, the reaction temperature being 50-90°C; the reaction is carried out at atmospheric pressure, and the requirements of reaction equipment for industrial production are reduced; at the same time, the safety of the process is improved, the catalyst can be applied stably, the amounts of waste water, gas, and solids are small, the process is simple, there is no corrosion to equipment, and costs are low, such that the invention is suitable for industrial production.

Classes IPC  ?

• C07C 29/04 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par addition de groupes hydroxyle à des liaisons carbone-carbone non saturées, p. ex. à l'aide de H2O2 par hydratation de liaisons doubles carbone-carbone
• C07C 31/20 - Alcools dihydroxyliques
• B01J 31/28 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant en outre des composés métalliques inorganiques non prévus dans les groupes du groupe du platine, du cuivre ou du groupe du fer

Abrégé

A polyarylene sulfide granule, a preparation method therefor and a molded product thereof, wherein the surface of the granule has a porous structure, functional additives are adsorbed on at least a part of the surface of the porous structure, and the granule comprises polyarylene sulfide particles and/or slices.

Classes IPC  ?

• C08L 81/02 - Polythio-éthersPolythioéther-polyéthers
• C08K 5/13 - PhénolsPhénolates
• C08K 5/524 - Esters des acides phosphoreux, p. ex. de H3PO3
• C08J 3/20 - Formation de mélanges de polymères avec des additifs, p. ex. coloration
• D06M 101/30 - Polymères synthétiques consistant en composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
• C08J 9/36 - Post-traitement

Abrégé

A spinning method and apparatus. The method and apparatus are suitable for the production of polyarylene sulfide fibers having relatively high glass transition temperature. By adding the fibers into an oil bath storage tank, uniform heating during fiber drawing can be maintained and the heating temperature can be precisely controlled; the damage to equipment and to the quality of the fibers in an oil bath tank due to high temperature transmission of a heating medium is avoided, and the problem of insufficient utilization of the heating medium caused by the reduction of starting and stopping efficiency and the drastic change in the flow of the heating medium when the equipment is started or stopped is avoided.

Classes IPC  ?

• D01D 5/14 - Méthodes de filage par étirage par circulation de fluides provoquant l'étirage
• D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction

Produits et services

vitamin preparations; medicines for human purposes; Crude drugs; nutritional supplements; dietetic substances adapted for medical use; depuratives; dietary supplements for animals; protein supplements for animals; vitamins for animals; fodder additives for medical purposes.

Abrégé

Disclosed is a method for preparing an unsaturated ketone. In the method, an unsaturated alcohol and 2-alkoxy propylene are used as raw materials, and a Saucy-Marbet reaction is performed by modifying an acidic resin in a fixed bed, so as to synthesize an unsaturated ketone with high selectivity and high yield. The method uses a modified acidic resin as a catalyst to compensate for the poor catalytic effect of a conventional acidic resin, and uses a fixed bed reactor for the catalytic reaction, so that separation of the catalyst and a reaction product can be achieved before and after the reaction, thereby avoiding device corrosion and adverse effects on subsequent industrial treatment caused by the presence of a large amount of an acid. The method is an economical and efficient synthesis method.

Classes IPC  ?

• C07C 45/51 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par pyrolyse, réarrangement ou décomposition
• C07C 49/203 - Composés non saturés comportant des groupes cétone liés à des atomes de carbone acycliques avec uniquement des liaisons doubles carbone-carbone comme insaturation
• C07C 45/62 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par des réactions ne créant pas de groupe C=O par hydrogénation de liaisons doubles ou triples carbone-carbone
• C07C 49/04 - Composés saturés comportant des groupes cétone liés à des atomes de carbone acycliques
• B01J 31/08 - Résines échangeuses d'ions

Abrégé

Disclosed are semi-aromatic polyamide and a preparation method therefor. The semi-aromatic polyamide is obtained by taking diamine, dibasic acid, and monoacid as main raw materials, and adding a specific end-capping agent for polymerization reaction. The semi-aromatic polyamide prepared in the present invention is good in thermal stability, and has a yellowness index of less than 20, a glass transition temperature of above 90°C, and a melting point of above 300°C, and can be applied to parts such as vehicle fuel pipelines, and electronic and electrical industries such as LED panels.

Classes IPC  ?

• C08G 69/48 - Polymères modifiés par post-traitement chimique
• C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
• C08G 69/28 - Procédés de préparation

Abrégé

A method for stabilizing a phosphite ligand and an application thereof: a cyclodextrin compound is added to a reaction system in which a phosphite ligand is present so as to inhibit the decomposition of the ligand; in the reaction system, the phosphite ligand is used as a catalyst for reaction, or jointly forms a catalyst for reaction along with a transition metal. By means of the described method, the decomposition of the phosphite ligand in the reaction system may be effectively inhibited, increasing the service life of the phosphite ligand, and further achieving the purpose of improving reaction efficiency.

Classes IPC  ?

• C07F 9/02 - Composés du phosphore
• C07F 9/142 - Esters des acides phosphoreux avec des composés hydroxyalkylés sans substituant supplémentaire sur l'alkyle
• C07F 9/145 - Esters des acides phosphoreux avec des composés hydroxyarylés
• C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle
• B01J 31/18 - Catalyseurs contenant des hydrures, des complexes de coordination ou des composés organiques contenant des complexes de coordination contenant de l'azote, du phosphore, de l'arsenic ou de l'antimoine
• C07C 47/06 - Acétaldéhyde
• C07C 47/02 - Composés saturés comportant des groupes —CHO liés à des atomes de carbone acycliques ou à de l'hydrogène
• C07C 47/228 - Composés non saturés comportant des groupes —CHO liés à des atomes de carbone acycliques contenant des cycles aromatiques à six chaînons, p. ex. le phénylacétaldéhyde
• C07C 45/50 - Préparation de composés comportant des groupes C=O liés uniquement à des atomes de carbone ou d'hydrogènePréparation des chélates de ces composés par réaction avec le monoxyde de carbone par synthèse oxo

Abrégé

The present invention relates to a high-molecular-weight polyphenylene sulfide resin and preparation method and use thereof. In the present invention, sulfur-containing compound and halogenated aromatic compound are used as raw materials, and basic compound and fatty acid as polycondensation agent; a polycondensation reaction is performed, and, after purification, a polyphenylene sulfide primary product is obtained; said polyphenylene sulfide primary product is then reacted with a chain extender at high temperature to produce a high-molecular-weight polyphenylene sulfide resin. The preparation method of the present invention has high yield and low cost, and has the features of selective and controllable preparation of polyphenylene sulfide resins having different melt viscosities and molecular weights; the obtained polyphenylene sulfide resins have excellent heat resistance. The linear high-molecular-weight polyphenylene sulfide resin having high thermal stability obtained by the present invention can be used for the production of plate, pipe, and rod material, and, like metal, can be cut, ground, polished, drilled, and otherwise mechanically processed, and can also be used for making fibers, membranes, and films, and is especially suitable for automotive component parts, electronic/electrical devices, chemical engineering, and mechanical industries.

Classes IPC  ?

• C08G 75/0209 - Polyarylène-thioéthers dérivés de monomères contenant un noyau aromatique
• C08G 75/0227 - Polyarylène-thioéthers dérivés de monomères contenant plusieurs noyaux aromatiques
• C08G 75/0259 - Procédés de préparation utilisant des hydrogénosulfures métalliques

Abrégé

Disclosed are an adsorptive starch and an adsorptive starch agglomerate, a preparation method and an application thereof, and a nutrient formulation comprising the same. The preparation method of the adsorptive starch comprises the following steps: dispersing starch in water to form a starch dispersion; adding a crosslinking agent to perform a crosslinking reaction to obtain crosslinked starch; subjecting the crosslinked starch to an esterification reaction with octenyl succinic anhydride to obtain octenyl starch succinate; subjecting the octenyl starch succinate to an enzymolysis reaction with amylase; and sequentially performing an expansion treatment and a drying treatment to obtain the adsorptive starch. The inventive step of the preparation method lies in first subjecting the starch to a crosslinking treatment so as to significantly increase the tolerance of the starch in subsequent esterification, enzymolysis and expansion treatments, such that the esterification reaction can introduce hydrophobic groups conducive to adsorption and generate physical micropores, the enzymolysis reaction can add a large number of micropores while maintaining the structure of starch particles, and the expansion treatment can increase the volume of the micropores and the particles without gelatinization of starch molecules, thus maximizing the adsorption capability of the adsorptive starch.

Classes IPC  ?

• C12P 19/22 - Préparation de composés contenant des radicaux saccharide préparés par action d'une bêta-amylase, p. ex. maltose
• C12P 19/14 - Préparation de composés contenant des radicaux saccharide préparés par action d'une carbohydrase, p. ex. par action de l'alpha-amylase
• C08B 30/00 - Préparation de l'amidon, de l'amidon dégradé ou modifié par un traitement non chimique, de l'amylose ou de l'amylopectine
• A23L 33/00 - Modification de la qualité nutritive des alimentsProduits diététiquesLeur préparation ou leur traitement

Abrégé

Disclosed is a method for preparing an octenyl succinate starch ester, comprising: (1) jet-cooking an alkaline dispersion of starch and a lipid solution of octenyl succinic anhydride to obtain a jet-cooked solution, or jet-cooking a basic mixture solution containing starch, octenyl succinic anhydride, water, and a lipid to obtain a jet-cooked solution; and (2) allowing the jet-cooked solution obtained in step (1) to stand and separate into layers, collecting the lower emulsion and performing enzymatic hydrolysis to obtain an enzymatic hydrolysis solution, and post-processing the jet-cooked enzymatic hydrolysis solution to obtain an octenyl succinate starch ester. The preparation method is simple and efficient, and the reaction efficiency of octenyl succinic anhydride is high.

Classes IPC  ?

• C08B 31/04 - Esters d'acides organiques