The invention concerns a method for preparing a mixture containing cyclohexanol and cyclohexanone, comprising the step of hydrogenating cyclohexyl hydroperoxide in cyclohexane in the presence of a Raney nickel catalyst to give cyclohexanol and cyclohexanone.
C07C 29/132 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group
C07C 29/50 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups with molecular oxygen only
C07C 45/33 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
C07C 45/51 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
C07C 35/08 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing six-membered rings
C07C 49/403 - Saturated compounds containing a keto group being part of a ring of a six-membered ring
C07C 59/01 - Saturated compounds having only one carboxyl group and containing hydroxy or O-metal groups
C07C 409/06 - Compounds containing rings other than six-membered aromatic rings
C07C 409/24 - Peroxy compounds the —O—O— group being bound between a C=O group and hydrogen, i.e. peroxy acids
C07C 249/08 - Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes by reaction of hydroxylamines with carbonyl compounds
2.
BLACK-COLOURED POLYAMIDE COMPOSITION WITH HIGH LASER TRANSMITTANCE FOR LASER WELDING APPLICATION
Polyamide composition, comprising (i) at least one aliphatic polyamide or semi-aromatic polyamide or mixture thereof; (ii) glass fibres; (iii) at least one non-fibrous reinforcing material in an amount of up to 8 wt.-%; (iv) at least one black dye of the monoazo complex type; (v) optionally one or more further additives.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 77/10 - Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
B29K 105/00 - Condition, form or state of moulded material
3.
BLACK-COLOURED POLYAMIDE COMPOSITION WITH HIGH LASER TRANSMITTANCE FOR LASER WELDING APPLICATION
Polyamide composition, comprising (i) at least one aliphatic polyamide or semi-aromatic polyamide or mixture thereof; (ii) circular glass fibres; (iii) flat glass fibres; (iv) at least one black dye of the monoazo complex type; (v) optionally one or more further additives.
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
The present invention relates to a polyamide composition comprising: (a) at least one first semi-crystalline polyamide comprising repeating units derived from two or more diacids, and one or more diamine(s), (b) at least one second semi-crystalline polyamide comprising repeating units derived from two or more diacids and one or more diamine(s), (c) at least one glass fibre, and (d) optionally at least one further additive, wherein the at least one first semi-crystalline polyamide and the at least one second semi-crystalline polyamide are different from each other and defined by their molar ratio of repeating units derived from aromatic dicarboxylic acids and aliphatic dicarboxylic acids. The polyamide composition according to the invention provides a superior combination of high thermal stability (i.e. heat distortion temperature) and high flowability (i.e. low melt viscosity).
The present application relates to a polyamide composition (P) comprising specific flat glass fibres (B) with elongated shape having a non-circular cross- sectional area. The polyamide composition (P) is advantageously used for the production of molded parts. The invention also relates to use of molded parts obtainable by molding of the polyamide composition (P) to produce mechanical parts. The molded parts are characterized by having improved fatigue resistance properties. In one embodiment, the invention is also concerned with a polyamide composition (P) comprising PA 6.6 as polyamide (A) and flat glass fibres (B) as defined in the claims and specification.
The present disclosure relates to a polyamide comprising at least one repeating unit of formula I: —[OC—Ar—O—P(═O)(—Ar)—O—Ar—CO—NH—R—NH]— Formula (I) wherein, Ar is independently selected from the group consisting of aryl, arylene, heteroaryl and carbocyclic group; R represents a covalent bond or a divalent hydrocarbon-based group selected from the group consisting of saturated or unsaturated aliphatics, saturated or unsaturated cycloaliphatics, aromatics, arylaliphatics, and alkylaromatics.
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C08G 69/42 - Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
C08G 79/04 - Phosphorus linked to oxygen or to oxygen and carbon
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08K 3/013 - Fillers, pigments or reinforcing additives
C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
6 linear or branched aliphatic chain, and R is an alkyl, a cycloalkyl or an aryl. The plasticizing agent according to the present invention has a good performance for different types of formulations (foam, film and paste). Said plasticizer gels rapidly, has a very low viscosity, and ages very well. Efficient debubblizing is one of the key properties thereof. The foams prepared with said plasticizer have very low densities, a high expansion rate, and excellent qualities.
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08K 5/101 - EstersEther-esters of monocarboxylic acids
C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting a cycloalkane with a hydroperoxide compound in the presence of a catalytic effective amount of a cerium oxide based catalyst.
C07C 51/31 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation of cyclic compounds with ring-splitting
C07C 45/28 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation of —CHx-moieties
C07C 29/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
C07C 29/132 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group
C07C 45/53 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of hydroperoxides
Polyamide compositions comprising a blend of polyamide 6,6 and at least one high chain-length polyamide, and A1 stearate, use thereof, and articles obtained therefrom
y Formula (I) in which x is a number varying from 0.10 to 1.00 and y is a number varying from 0.00 to 1.50, in order to produce the at least one alcohol and/or at least one ketone.
C07C 45/53 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of hydroperoxides
13.
Composition of a blend of polyamide and polyester resins
A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
14.
Polyamide composition comprising amorphous polyamide and/or polyester with enhanced and uniform electrical conductivity
Provided is a composition comprising a) at least one semi-crystalline polyamide, b) at least one conductive material, and c) at least one amorphous polyamide, and optionally d) at least one polyester. The composition may further comprise e) at least one filler and f) at least one additive.
H01B 1/24 - Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon, or silicon
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
Polyamide molding compositions, use thereof, and molded parts obtained therefrom Provided is a polyamide molding composition comprising a) at least one semi-crystalline polyamide; b) at least one thermoplastic polyester; c) at least one novolac resin; and d) at least one flat glass fibers as filler, and optionally e) at least one amorphous polyamide and f) at least one additive.
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
B29L 31/34 - Electrical apparatus, e.g. sparking plugs or parts thereof
2 [monomer (FN)], and—ε-caprolactam (or derivates thereof); said branched polyamide possessing a concentration of amine end groups (AEG) and a concentration of carboxylic end groups (CEG) such that the difference AEG−CEG is of at least 100 meq/kg [polyamide (B)]; and—from 0.01 to 3.5% wt of at least one thermal stabilizer [stabilizer (S)], —optionally, from 0 to 60% wt of at least one filler [filler (F)]; —optionally, from 0 to 20% wt of at least one impact modifying rubber [rubber (I)]; —optionally, from 0 to 20% wt of other conventional additives, with above % wt being referred to the total weight of composition (C).
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
B29C 49/00 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
B29K 77/00 - Use of polyamides, e.g. polyesteramides, as moulding material
The present invention provides polyamide compositions comprising (a) at least one high chain-length polyamide [polyamide (PA)]; (b) at least one grafted polyolefin [olefin (PO)]; and (c) at least one aromatic diacid [acid (DA)]. The polyamide composition can be advantageously used as a material to be coated on a surface of metal component.
B32B 15/088 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyamides
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
19.
Polyamide based composition containing polyketone and rubber
The present invention relates to a polyannide composition comprising polyamide, polyketone, and rubber, wherein the polyketone is present in an amount of no more than 5 wt %, based on the total weight of the polyamide composition. The inventive polyamide composition has and exhibits improved mechanical properties and chemical resistance both to Zinc salt and glycol, and thus is particularly useful in the manufacture of articles for automotive application.
C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
The invention pertains to a filled polyamide composition [composition (C)] comprising: —from 35 to 80% wt of at least one polyhydric alcohol-modified polyamide, comprising an amount of polyhydric alcohol (PHA, herein after) residues chemically bonded at least to a part of the polyamide [polyamide (A)] of at least 0.1% wt (based on the total weight of polyamide (A)); —from 10 to 65% wt of at least one filler [filler (F)]; —from 1 to 10% wt of at least one impact modifying rubber [rubber (I)]; and —from 0.01 to 3% wt of at least one copper-containing stabilizer, with above % wt being referred to the total weight of composition (C).
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting a cycloalkane with an oxidant agent in the presence of catalytic effective amount of metal triflates or metal triflimidates catalysts.
C07C 45/28 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation of —CHx-moieties
C07C 29/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
23.
Cycloalkane oxidation catalysts and method to produce alcohols and ketones
Disclosed is a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting a cycloalkane with a hydroperoxide in the presence of a catalytic effective amount of a crystalline MWW-type titanosilicate catalyst. Hydroperoxides may notably be tert-butyl hydroperoxide, tert-amyl hydroperoxide, cumene hydroperoxide, ethylbenzene hydroperoxide, cyclohexyl hydroperoxide, methylcyclohexyl hydroperoxide, tetralin hydroperoxide, isobutylbenzene hydroperoxide, and ethylnaphthalene hydroperoxide.
C07C 49/385 - Saturated compounds containing a keto group being part of a ring
C07C 35/02 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic
C07C 45/28 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation of —CHx-moieties
C07C 29/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
24.
Agent for inhibiting the swelling of clays, compositions comprising said agent and methods implementing said agent
The present invention concerns the use of a novel additive as an agent for inhibiting the swelling of clays, in particular in the field of boreholes. More specifically, the present invention concerns the use of a specific diamine and diacid salt as an agent for inhibiting the swelling of clays in an aqueous medium, and a drilling or hydraulic fracturing fluid composition comprising the salt according to the invention and methods for drilling or hydraulic fracturing implementing said salt.
Polyamide-based thermoplastic polymer compositions that exhibit a good balance among the properties thereof, in particular their mechanical properties, and a high fluidity in the molten state; such compositions contain at least one high-fluidity polyamide and a shock modification agent having functional groups that react with the polyimide.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
C08L 33/08 - Homopolymers or copolymers of acrylic acid esters
C08L 35/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereofCompositions of derivatives of such polymers
The present invention relates to a composition comprising at least a thermoplastic polyamide resin, a thermoplastic polyester resin, a reinforcing or bulking filler and a fire retardant. Said composition does not comprise any compatibilizer for the polyamide and the polyester, such as an agent of polymeric type, and especially no epoxy resin. Such a fire-retardant polyamide/polyester composition shows good compatibility and good mechanical and fire-retardant properties, especially a good capacity not to form flames in the presence of glowing agents, for example in the field of domestic electrical appliances, electrics and electronics.
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
The present invention relates to a method for preparing polyamide granules. This method comprises, in particular, steps of extruding the polymer, cooling and cutting the extruded material, and a step of cooling the granules. The method of the invention is simple and quick to implement.
The present invention relates to a composition containing a polyamide matrix having high thermal conductivity, and including a nitride and a metal oxide, as well as, optionally, a flame-retardant system. Said composition can be used in particular for producing components for lighting apparatuses including light-emitting diodes.
H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
C08K 5/52 - Phosphorus bound to oxygen bound to oxygen only
The present invention relates to the use of a polyhydric alcohol in a polyamide polymerization process for giving the modified polyamide obtained increased stability toward heat, light and/or bad weather. The invention also relates to a polyamide modified in this way, and also to polyamide compositions that may be used for the preparation of specific articles liable to be subjected to high temperatures.
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08G 69/48 - Polymers modified by chemical after-treatment
30.
Polyamide composition having high thermal conductivity
The present invention relates to a composition based on a polyamide matrix having a high thermal conductivity and comprising specific proportions of alumina and of graphite and also a flame-retardant system. This composition may in particular be used for producing components for lighting devices comprising light-emitting diodes.
H01L 23/16 - Fillings or auxiliary members in containers, e.g. centering rings
H01L 23/28 - Encapsulation, e.g. encapsulating layers, coatings
H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
C09K 5/00 - Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerantsMaterials for the production of heat or cold by chemical reactions other than by combustion
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
H05B 33/20 - Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
31.
Process for the manufacture of tanks having high barrier properties toward fluids
The invention relates to a method for producing a tank having high fluid-barrier properties. According to the invention, a specific polyamide composition containing impact-resistance modifying agents is used in a first step to produce components by means of injection moulding and, subsequently, said components are assembled in order to obtain the tank. The viscosity and gasoline permeability of the polyamide composition are sufficient to allow the production of tanks that provide an excellent trade-off between fluid-barrier properties and mechanical properties.
A polyamide composition is described that is stabilized with respect to heat. The composition can have a polyhydric alcohol-based stabilization system that is excellent in maintaining mechanical properties after exposure to heat. Also described, is a process for producing these compositions, and the use of these compositions for making various articles.
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.
A method for oxidizing hydrocarbons, in particular saturated hydrocarbons, for producing peroxides, alcohols, ketones, aldehydes and/or diacids is described. Also described, is a method for oxidizing a cycloaliphatic saturated hydrocarbon using molecular oxygen for producing ketones/alcohols, and more precisely for oxidizing cyclohexane into cyclohexanol and cyclohexanone using molecular oxygen.
C07C 29/48 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups
C07C 29/50 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by oxidation reactions with formation of hydroxy groups with molecular oxygen only
C07C 45/33 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
C07C 51/31 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation of cyclic compounds with ring-splitting
C07C 45/28 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation of —CHx-moieties
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
A process is described for producing a polyamide from at least one diacid and from at least one diamine. The process can include introducing a lactam and/or an amino acid after a step of concentrating an aqueous solution of a salt of diacid and diamine.
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
A polyamide composition for surface-mounted components is described. Also described are compositions for surface-mounted components (SMCs) including a semiaromatic polyamide modified by a hydroxyaromatic compound, reinforcing fillers, and a flame retardant. Further, the compositions have many advantages linked to the uses thereof in lead-free reflow soldering processes, in particular a good dimensional stability and a blistering resistance during the use of articles produced from these compositions.
C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
37.
Sulfonate-modified polyamide having improved barrier properties
The use of a polyamide modified by sulfonate functions which has improved barrier properties is described. Further described is the use of a sulfonate, aliphatic or aromatic compound for manufacturing a modified polyamide having improved fluid-barrier properties. The composition as described includes a modified polyamide, which is optionally a composition in the form of granules or powder used in manufacturing articles by an injection or extrusion blow-molding method.
C08G 69/42 - Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
F16L 9/12 - Rigid pipes of plastics with or without reinforcement
F16L 11/04 - Hoses, i.e. flexible pipes made of rubber or flexible plastics
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment
C08L 61/04 - Condensation polymers of aldehydes or ketones with phenols only
38.
Thermoplastic composition based on polyamide, polyketone and novolac resin
A thermoplastic composition based on polyamide and polyketone is described. The thermoplastic composition can have an excellent mechanical strength and dimensional stability. Further, the composition can include a novolac resin and a reinforcing or a bulking filler. The composition can be molded, for example in the form of granules or powder, which is used for manufacturing articles via an injection-molding process.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 73/00 - Compositions of macromolecular compounds obtained by reactions forming a linkage containing oxygen or oxygen and carbon in the main chain, not provided for in groups Compositions of derivatives of such polymers
C08L 61/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
A process for preparing dicarboxylic acids is described. More particularly a process is described for preparing adipic acid (1,6-hexanedioic acid), by the action of nitric acid, starting from cyclic ketones or alcohols which are the corresponding compounds from the standpoint of the number of carbon atoms, in the presence of one or more oxides of nitrogen at a molar concentration in the reaction mixture of greater than 2.5 mmol per kg of reaction mixture.
C07C 51/27 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
C07C 51/31 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation of cyclic compounds with ring-splitting
Heat and light-stabilized polyamide compositions containing a stabilization system that includes copper oxide and KBr, and have an excellent preservation of color and of the mechanical properties thereof after exposure to heat or to light; these compositions are especially useful for producing shaped articles in the automotive field.
C08K 3/00 - Use of inorganic substances as compounding ingredients
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
41.
Process for the production of an alkyl hydroperoxide
A method for preparing an alkyl hydroperoxide obtained by the oxidation of a saturated hydrocarbon using oxygen, preferably of a saturated cyclic hydrocarbon, is described. Also described, is a method for preparing cyclohexyl hydroperoxide by oxidizing cyclohexane with molecular oxygen or a gas containing molecular oxygen preferably in the absence of a catalyst.
A polyamide composition that can be used in different transformation methods and, in particular, for the production of an extrusion profile having a low thermal conductivity, is described. One such composition includes, in particular, glass beads. Also described is a composition, preferably a molding composition, e.g., in the form of granules or powder, that can be used to produce items by means of injection molding.
A process for preparing a deperoxidation catalyst comprising chromium as the main catalytic element is described. Also described, is a process for preparing an organic solution of a chromic acid ester. The solution can be used as a catalyst in a deperoxidation of an alkyl peroxide in a process for manufacturing cyclohexanol/cyclohexanone by oxidation of cyclohexane.
C07C 45/53 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of hydroperoxides
C07C 29/132 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group
B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
A method for oxidizing saturated hydrocarbons with oxygen, preferably saturated cyclic hydrocarbons such as cyclohexane, to produce alkyl hydroperoxide is described. A method for oxidizing saturated hydrocarbons with oxygen in a plurality of consecutive steps to control the rate of the reaction and obtain a high degree of alkyl hydroperoxide selectivity is also described. The described methods can relate to methods for condensing oxidation gases recovered in an oxidation reactor and recycling thereof.
The use of a phenolic compound for producing a modified polyamide having enhanced mechanical properties is described. A polyamide composition including at least such phenolic compound and optionally reinforcing or filler loads is also described. The composition is preferably a composition for molding, for example in the form of granules or powder, that can be used for the production of articles by injection-molding.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
The use of a polyamide including hydroxyaromatic units in order to increase the acid resistance of a polyamide composition is described. A polyamide composition comprising a polyamide that includes hydroxyaromatic units and use thereof for the manufacture of various plastic articles such as, for example, calibrated particles or injection-molded parts is also described. Such a composition is especially useful in the field of the recovery of slurries, liquids and gases present in underground reservoirs, and in particular in the field of the extraction of hydrocarbons, such as crude oil or natural gas.
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08G 69/48 - Polymers modified by chemical after-treatment
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
C08J 3/00 - Processes of treating or compounding macromolecular substances
47.
Modified polyamide, preparation method thereof and article obtained from said polyamide
A polyamide modified by a compound including a sulfonate group, as well as a method for preparing the polyamide and to articles obtained from said modified polyamide are described. A modified polyamide obtained from a mono-functional aromatic sulfonate compound is also described.
C08G 69/00 - Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
C08G 69/42 - Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
A sulfonated aliphatic or aromatic compound for the production of a modified polyamide that can significantly increase the glass transition temperature of the polyamide is described. A polyamide composition including at least: one polyamide modified by a sulfonated compound, the compound being chemically bonded to the polymer chain of the polyamide; and reinforcing or filling agents is also described. The composition can be a composition to be molded, for example, in the form of granules or powder, to be used in the production of articles using an injection molding method.
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
C08G 69/42 - Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
C08G 69/48 - Polymers modified by chemical after-treatment
49.
Modified polyamide composition comprising at least one phenolic compound
A phenolic compound for manufacturing a modified polyamide that has an increased degree of crystallinity is described. A polyamide composition comprising at least one such phenolic compound and optionally reinforcing fillers or extenders is also described. The composition is preferably a composition to be molded, for example in the form of granules or powder, that is used for the manufacture of articles by an injection-molding process.
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C07C 69/84 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring
A process for the preparation of compounds containing nitrile functions and, more specifically, compounds containing two nitrile functions, such as succinonitrile and adiponitrile, is described. A process for preparing dintrile compounds obtained by reacting ammonia with an aqueous solution of a dicarboxyl compound in the presence of a silicon orthophosphate catalyst is also described.
A plant for the crystallization of adipic acid is described. A plant for the crystallization of adipic acid, some parts of which are made of a corrosion-resistant material, is also described. The corrosion-resistant material used can be a reference austenitic stainless steel of AISI 310L type, according to the AISI (USA) nomenclature, or X1 CrNi 25-21 (1.4335) type, according to the European nomenclature.
C30B 7/08 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by cooling of the solution
The present invention relates to a process for producing polyamide. The invention relates more particularly to a process for producing polyamide from at least one diacid and from at least one diamine, comprising the introduction of a lactam and/or of an amino acid after a step of concentrating an aqueous solution of a salt of a diacid and diamine.
B29B 9/12 - Making granules characterised by structure or composition
C08G 69/02 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
A polyamide modified by a compound including at least one hydroxyl group, as well as to a method for preparing such a polyamide, and articles obtained from such a polyamide are described. A polyamide modified by a compound comprising at least one aromatic hydroxyl group and chemically bonded to the polymer chain, obtained by the polymerization of polyamide monomers with at least one difunctional hydroxyaromatic compound in which both functions can react with an amino function is also described.
Amine compounds, more particularly diamine compounds, are prepared by hydrogenating compounds including nitrile functions. The preparation can include the use of a hydrogenation catalyst, adapted for the hydrogenation of nitrile compounds into amine compounds, including Raney nickel as well as iron, chromium, and zinc as doping elements.
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
Polyurethane foams are prepared from polyester polyols obtained by reaction of diols with a mixture of diacids derived from a mixture of dinitrile compounds obtained as by-products in the manufacture of adiponitrile by hydrocyanation of butadiene.
Heat- and light-stabilized polyamide compositions contain a stabilization system that includes copper oxide and KBr, and have an excellent preservation of color and of the mechanical properties thereof after exposure to heat or to light; these compositions are especially useful for producing shaped articles in the automotive field.
Methyl-2-pentamethylenediamine and methyl-3-piperidine are prepared by hydrogenation of methylglutaronitrile in the presence of a catalyst including cobalt, chromium, and nickel, especially a catalyst based on Raney cobalt doped with nickel and chromium.
C07D 211/12 - Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with radicals containing only carbon and hydrogen atoms attached to ring carbon atoms with only hydrogen atoms attached to the ring nitrogen atom
C07D 213/133 - Preparation by dehydrogenation of hydrogenated pyridine compounds
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
58.
Fiber-filled polyamide compositions and molded articles shaped therefrom
Polyamide compositions filled with fibers have good mechanical and rheological properties, the polyamide having a high fluidity in molten phase and the fibers, in particular glass fibers, being well aligned at both the surface and the core of shaped articles injection molded from such compositions.
Impure hexamethylenediamines and more particularly those hexamethylenediamines containing contaminating amounts of tetrahydroazepine (THA), or more generally contaminating amounts of imines, are purified by distillation carried out with a short retention time of the impure hexamethylenediamine in the distillation column; the hexamethylenediamine obtained has a very low concentration of THA.
Amino compounds are continuously prepared by hydrogenation of nitrile compounds in the presence of a catalyst, and more particularly diamines are prepared by the continuous hydrogenation of dinitrile compounds in the presence of a Raney metal catalyst and in the absence of an alcoholic solvent; the subject process includes extracting a portion of the catalyst present in the reaction medium, the extracted portion of the catalyst is submitted to a regeneration for providing a catalyst having a catalytic activity lower than that of a fresh catalyst but still high and the regenerated catalyst is recycled to the reaction medium together with fresh catalyst according to a predetermined ratio, whereby the consumption of catalyst is reduced per ton of amines produced.
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
Flame-proofed thermoplastic compositions include organophosphorus compounds as flame retardants; thermoplastic articles shaped therefrom do not experience deterioration of the appearance of the surfaces thereof by corrosion or deposition.
A method for producing amines by the hydrogenation of nitrile compounds in the presence of a catalyst, notably a method for producing diamines by the continuous hydrogenation of dinitrile compounds in the presence of a Raney-metal catalyst, includes controlling the molar flow of nitrile compounds and the mass flow of catalyst in a hydrogenation piston reactor in order to minimize the occurrence of impurities and deterioration of the catalyst.
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
Primary diamines are prepared by hydrogenation of a dinitrile compound in the presence of a catalyst, in particular hexamethylenediamine is prepared by hydrogenation of adiponitrile; the product diamines are recovered by distillation in several distillation columns mounted in series and the heavy impurities are separated from the second distillation.
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
The present invention relates to a process for producing polyamide of the type of those obtained by polycondensation from diacids and diamines and/or the type of those obtained by polycondensation from lactams and/or amino acids. The process is entirely suitable for the production of polyhexamethylene adipamide.
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