The present subject matter relates to a process for producing neopentyl glycol compacts, the process including at least the process steps of providing a fill of NPG flakes and compressing the fill in a mold to form a compact, wherein the compressing is performed at a pressure greater than or equal to 0.5 MPa and less than or equal to 7.5 MPa. Furthermore, the present subject matter relates to NPG compacts.
The present invention relates to a method of increasing the biogas yield of an anaerobic biomass fermentation, at least comprising the method steps of: a) providing an anaerobically active bacteria population suitable for generation of biogas from fermentable biomass and/or non-biogenic waste materials and b) once or more than once adding the fermentable biomass and/or non-biogenic waste materials to the bacteria population, wherein a mixture of at least three different branched C4-C5 monocarboxylic acids is added once or more than once to the bacteria population in method step a), in method step b) or in both method steps. The present invention further relates to a carboxylic acid composition at least comprising three different branched C4-C5 monocarboxylic acids.
The present invention relates to a process for the hydroformylation of 1-olefins on a rhodium-containing complex catalyst comprising a mixture of phosphorus-containing organic complex ligands in the presence of hydrogen and carbon monoxide, wherein the reaction is carried out in a solvent selected from the group of solvents having a boiling point of greater than or equal to 180° C. and less than or equal to 250° C., with a rhodium concentration of greater than or equal to 50 ppm and less than or equal to 250 ppm on catalyst complexes with at least two different complex ligands selected from the group consisting of arylphosphines and cycloalkylphosphines. Furthermore, the present invention relates to the use of the process according to the invention in the context of a two-stage hydroformylation reaction cascade.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
The present invention relates to a method for producing thick electrode films having a thickness of greater than or equal to 100 µm and less than or equal to 600 µm for secondary alkali-ion energy storage devices, the method comprising the steps of: a) preparing a dispersion comprising at least one solvent and solids having a total solids content of the dispersion of greater than or equal to 40 wt.% and less than or equal to 80 wt.%, the solids comprising active material, one or more conductivity additives, and one or more binders, and mixing butanediol into the dispersion in a concentration of greater than or equal to 2 wt.% and less than or equal to 10 wt.% based on the total weight; b) applying the dispersion in a layer thickness of greater than or equal to 200 µm and less than or equal to 1200 µm; and c) drying the applied dispersion so as to obtain an electrode film. The present invention also relates to: the use of the method according to the invention to produce electrode films; and electrode films having a layer thickness of greater than or equal to 100 µm and less than or equal to 600 µm with a specific composition.
The invention relates to the use of a composition which is greater than or equal to 80 wt.% and less than or equal to 100 wt.% consisting of diesters of butanediol with aliphatic C4-C10 monocarboxylic acids for the direct tempering of electrical accumulators.
The present invention relates to a process for the preparation of polycyclic aliphatic dialdehydes by hydroformylation of polycyclic aliphatic diolefins in the presence of synthesis gas over an organophosphorus ligand modified metal catalyst system having a transition metal of the 8th-10th subgroup, wherein the hydroformylation is carried out by means of a water-soluble diphosphine or triarylphosphine complex catalyst at a pressure of greater than or equal to 0.5 MPa and less than or equal to 10 MPa and at a temperature of greater than or equal to 70° C. and less than or equal to 150° ° C. in a homogeneous liquid reaction phase, the homogeneous liquid phase comprising at least one non-aqueous solvent, diolefin and/or mono- and/or dialdehydes thereof as reaction products and an aqueous catalyst solution, the proportions of these components in the solution being controlled so as to obtain a single-phase solution under the reaction conditions.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
The present invention relates to a process for the preparation of aldehydes by hydroformylation of olefins by means of synthesis gas over a transition metal complex catalyst, wherein within a first process step the olefins are reacted by means of a water-soluble transition metal complex catalyst consisting of a metal and ligands bound thereto in the presence of a water-miscible solvent, the pressure, temperature and proportions of the solvent and aqueous catalyst solution being controlled so that the hydroformylation is carried out in a homogeneous single-phase reaction solution and within a second process step, by lowering the temperature and/or reducing the pressure, the homogeneous reaction solution obtained from the first reaction step is converted into a two-phase process solution and at least part of the organic phase is separated from the aqueous phase.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
The present invention relates to a method for producing neopentyl glycol pellets, the method comprising at least the following method steps: a) providing a fill of NPG flakes; b) compressing the fill in a mold to form a pellet, the compression taking place at a pressure of greater than or equal to 0.5 MPa and less than or equal to 7.5 MPa. The present invention further relates to NPG pellets.
B01J 2/00 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic
B01J 2/22 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
9.
METHOD FOR IMPROVED CONTROL OF THE ISOMER RATIOS IN HYDROFORMYLATIONS
The invention relates to a method for the hydroformylation of 1-olefins on a rhodium-containing complex catalyst, comprising a mixture of phosphor-containing organic complex ligands with the addition of hydrogen and carbon monoxide, wherein the reaction is carried out in a solvent selected from the group of solvents with a boiling point greater than or equal to 180°C and lower than or equal to 250°C, with a rhodium concentration greater than or equal to 50 ppm and lower than or equal to 250 ppm of catalyst complexes with at least two different complex ligands selected from the group consisting of aryl phosphines and cycloalkyl phosphines. The invention also relates to the use of the method according to the invention in the context of a two-stage hydroformylation reaction cascade.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
C07C 47/02 - Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
10.
TCD-esters for low temperature liquid applications
The present invention relates to the use of esters of octahydro-4,7-methano-1H-indene-5-methanol (TCD-M) or -dimethanol (TCD-DM) and aliphatic C2-C18 monocarboxylic acids as lubricants in low temperature applications. In addition, the present invention relates to low-temperature lubricant compositions comprising said esters.
The present invention relates to a continuous two-phase hydroformylation process for the production of aldehydes from olefins by means of carbon monoxide, hydrogen and a transition metal catalyst in a reaction zone, the transition metal being in the form of a water-soluble catalyst complex, wherein the process comprising the following steps once or several times:
a) hydroformylating by reacting the olefins, carbon monoxide and hydrogen over a water-soluble transition metal catalyst comprising water-soluble organophosphorus ligands in the reaction zone;
d) increasing the concentration of the olefins in the reaction zone by increasing the olefin feed to the reaction zone and hydroformylating by reacting the olefins with carbon monoxide and hydrogen.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
B01J 23/46 - Ruthenium, rhodium, osmium or iridium
12.
PROCESS FOR PREPARING MIXED POLYOL CARBOXYLIC ACID ESTERS
The present invention relates to a process for preparing mixed polyol carboxylic acid esters having a molecular weight of greater than or equal to 200 g/mol and smaller than or equal to 1000 g/mol, wherein a polyol is reacted in an at least two-stage reaction with various monocarboxylic acids in the form of monocarboxylic acids or monocarboxylic acid anhydrides, wherein the different monocarboxylic acids are reacted with the polyol in the order of their reactivity in the esterification reaction, starting with the lowest reactivity, wherein the monocarboxylic acids having the lower reactivity are reacted at least partially as monocarboxylic acid anhydride with the polyol and the monocarboxylic acid having the highest reactivity is reacted subsequently as monocarboxylic acid with the polyol. The present invention also relates to the use of the process for preparing mixed polyol esters.
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
C07C 69/33 - Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with hydroxy compounds having more than three hydroxy groups
The present invention relates to a process for continuous production of C4-C10 Diols from C3-C9 aldehydes comprising the process steps of: a) base-catalyzed addition of formaldehyde onto C3-C9 aldehydes to obtain the corresponding hydroxyaldehydes and b) subsequent hydrogenation of the hydroxyaldehydes to afford the corresponding diols, wherein the hydrogenation of the hydroxyaldehydes is performed continuously in the liquid phase over a Raney™ cobalt catalyst in the presence of hydrogen without workup of the reaction mixture from the process step a).
C07C 29/141 - 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 of C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
The present invention relates to a process for preparing aldehydes by hydroformylation of olefins by means of synthesis gas in a transition-metal-complex catalyst, wherein: within a first process step, the olefins are reacted, in the presence of a water-miscible solvent, by means of a water-soluble transition-metal-complex catalyst of a metal and ligands bound thereto, wherein the pressure, the temperature and the proportions of the solvent and aqueous catalyst solution are controlled such that the hydroformylation is carried out in a homogeneous single-phase reaction solution; and within a second process step, by lowering the temperature and/or reducing the pressure, the homogeneous reaction solution obtained from the first reaction step is converted into a two-phase process solution and at least part of the organic phase is removed from the aqueous phase.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
C07C 47/347 - Saturated compounds having —CHO groups bound to carbon atoms of rings other than six-membered aromatic rings polycyclic having a —CHO group on a condensed ring system
24.
PROCESS FOR PREPARING POLYCYCLIC ALIPHATIC DIALDEHYDES
The present invention relates to a process for preparing polycyclic aliphatic dialdehydes by hydroformylation of polycyclic aliphatic diolefins in the presence of synthesis gas in an organophosphorus-ligand-modified metal catalyst system having a transition metal of the 8th – 10th groups of the periodic table, wherein the hydroformylation is carried out by means of a water-soluble diphosphine- or triarylphosphine-complex catalyst at a pressure of greater than or equal to 0.5 MPa and less than or equal to 10 MPa and a temperature of greater than or equal to 70°C and less than or equal to 150°C in a homogenous liquid reaction phase, wherein the homogeneous liquid phase comprises at least one non-aqueous solvent, diolefin and/or the mono- and/or dialdehydes thereof as reaction products and an aqueous catalyst solution, wherein the quantitative proportions of these components in the solution are controlled such that there is a single-phase solution under the reaction conditions.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
C07C 47/347 - Saturated compounds having —CHO groups bound to carbon atoms of rings other than six-membered aromatic rings polycyclic having a —CHO group on a condensed ring system
The invention relates to the use of esters of octahydro-4,7-methano- 1H-indene-5-methanol (TCD-M) or dimethanol (TCD-DM) with C2 to C18 aliphatic monocarboxylic acids as lubricants in low temperature applications. The invention also relates to low temperature lubricant compositions of these esters.
C10M 171/00 - Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well defined but for which the chemical nature is either unspecified or only very vaguely indicated
The present invention relates to a continuous two-phase hydroformylation process for producing aldehydes from olefins by means of carbon monoxide, hydrogen and a transition metal catalyst in a reaction zone, the transition metal being in the form of a water-soluble catalyst complex, the process comprising the following steps once or several times: a) carrying out hydroformylation by reacting the olefins, carbon monoxide and hydrogen on a water-soluble transition metal catalyst having water-soluble organophosphorus ligands in the reaction zone; b) reducing the concentration of the olefins in the reaction zone by reducing the olefin supply to the reaction zone and removing at least part of the catalyst solution from the reaction system, it being possible to carry out the sub-steps of removing catalyst solution and of reducing the olefin concentration simultaneously or successively in this order or in reverse order; c) supplying a solvent, a transition metal source and water-soluble organophosphorus ligands to the reaction system, it being possible to supply the components simultaneously or successively in any order; d) increasing the concentration of the olefins in the reaction zone by increasing the olefin supply to the reaction zone and carrying out hydroformylation by reacting the olefins with carbon monoxide and hydrogen.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
C07C 47/02 - Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
35.
Method for the combined production of polyols in the presence of an inorganic base
The present invention relates to a process for simultaneously consecutive preparation of polyols by base-catalyzed reaction of at least two different mid-chain aldehydes with formaldehyde. The simultaneous consecutive mode of operation makes it possible to achieve high conversions and high selectivities for both aldehydes, with additional achievement of a distinct reduction in the amount of unreacted formaldehyde remaining. This leads to improved process economics, since the energy costs for workup of the formaldehyde stream are distinctly reduced.
C07C 29/38 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions with formation of hydroxy groups, which may occur via intermediates being derivatives of hydroxy groups, e.g. O-metal by reaction with aldehydes or ketones
C07C 31/22 - Trihydroxylic alcohols, e.g. glycerol
The present invention relates to the continuous production of 2-methylene alkanals in a tube reactor, wherein in the 2-position non-branched alkanals are reacted with formaldehyde under acid-base catalysis in the presence of secondary amines and carboxylic acids under laminar flow conditions.
A process for preparing 2-methylbutanal from the secondary streams obtained in the preparation of mixtures of isomeric α,β-unsaturated decenals, characterized in that a) a mixture comprising linear butenes is reacted in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements with carbon monoxide and hydrogen at elevated temperature and elevated pressure to give a pentanal mixture; b) the pentanal mixture obtained in step a) is converted in the presence of basic compounds to a mixture of isomeric α,β-unsaturated decenals; and c) the mixture obtained in step b) is separated into a stream enriched with unconverted 2-methylbutanal and a stream enriched with a mixture of isomeric α,β-unsaturated decenals; with the proviso that the stream which has been separated off in step c) and is enriched with unconverted 2-methylbutanal is reacted with formaldehyde.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
C07C 45/62 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by hydrogenation of carbon-to-carbon double or triple bonds
C07C 29/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
C07C 45/82 - SeparationPurificationStabilisationUse of additives by change in the physical state, e.g. crystallisation by distillation
C07C 45/74 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by isomerisationPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing C=O groups with the same or other compounds containing C=O groups combined with dehydration
C07C 29/17 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
38.
Method for obtaining polyol esters-enriched product streams from the side-streams in polyol ester production
characterized in that the volatile secondary stream obtained in step d) is separated into an aqueous phase and an organic phase and the organic phase removed is subjected to a further treatment with steam and a product stream enriched with polyol esters is obtained as residue.
C07C 67/54 - SeparationPurificationStabilisationUse of additives by change in the physical state, e.g. crystallisation by distillation
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
C07C 67/58 - SeparationPurificationStabilisationUse of additives by liquid-liquid treatment
C07C 67/60 - SeparationPurificationStabilisationUse of additives by treatment giving rise to chemical modification
2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms, preferably methyl, ethyl or propyl, or a hydroxyalkyl radical having 1 to 5 carbon atoms, preferably the hydroxymethyl radical, m is an integer from 1 to 10, preferably 1 to 8 and especially 1, 2, 3 or 4, o is an integer from 2 to 15, preferably 2 to 8 and especially 2, 3, 4 or 5, with excess linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms and having a lower boiling point than the polyols used. The process is carried out in the presence of a Lewis acid and in the presence of an adsorbent, while removing the water formed, characterized in that the excess monocarboxylic acid is removed by distillation and water is added to the crude ester obtained at a temperature below the boiling point of water at the particular pressure and the crude ester with added water is aftertreated with avoidance of basic compounds, and the sparingly soluble conversion products and the adsorbent present in the esterification reaction are filtered off.
C07C 67/60 - SeparationPurificationStabilisationUse of additives by treatment giving rise to chemical modification
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
C07C 67/56 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.
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
41.
Mixtures containing trimellitic acid ester and polyether polyol ester as plasticizers, use of the mixtures for producing polymer compounds and PVC materials containing said mixtures
A mixture useful as plasticizer comprises trimellitic esters and polyether polyol esters, characterized in that the mixture comprises from 1 to 99% by weight of trimellitic esters and 99 to 1% by weight of polyether polyol esters, wherein the polyether polyol esters can be derived from linear or branched, aliphatic monocarboxylic acids having 3 to 20 carbon atoms in the molecule.
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.
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
A method for preparing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give hydroxypivalaldehyde with subsequent hydrogenation at a temperature of 80 to 140° C. and at a pressure of 2 to 18 MPa in the liquid phase, is characterized in that the hydrogenation is carried out in the presence of a copper chromite catalyst comprising the activators barium and manganese.
C07C 29/141 - 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 of C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
A continuous process for preparing primary aliphatic amines having 3 to 18 carbon atoms by reacting corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst, characterized in that the reaction is carried out without solvent at a molar ratio of aliphatic aldehyde to ammonia of more than 1 to 16, above the critical temperature and above the critical pressure of ammonia.
C07C 209/26 - Preparation of compounds containing amino groups bound to a carbon skeleton by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds by reduction with hydrogen
C07C 209/52 - 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 imines or imino-ethers
C07C 249/02 - Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of compounds containing imino groups
45.
Mixtures containing trimellitic acid ester and polyether polyol ester as plasticizers, use of the mixtures for producing polymer compounds and PVC materials containing said mixtures
A mixture useful as plasticizer comprises trimellitic esters and polyether polyol esters, characterized in that the mixture comprises from 1 to 99% by weight of trimellitic esters and 99 to 1% by weight of polyether polyol esters, wherein the polyether polyol esters can be derived from linear or branched, aliphatic monocarboxylic acids having 3 to 20 carbon atoms in the molecule.
B32B 17/10 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
A process is provided for recovering aliphatic monocarboxylic acids having from 4 to 11 carbon atoms from the distillation residue obtained in the oxidation of the corresponding aldehyde by means of oxygen or oxygen-containing gas mixtures in the presence of alkali metal carboxylates or alkaline earth metal carboxylates to form the corresponding monocarboxylic acid and subsequent distillation, characterized in that the distillation residue is reacted with an aqueous acid in a tube reactor and the two-phase mixture flowing out from the tube reactor is introduced into a settling vessel in which the organic phase which separates out has a pH of 4.5 or less.
C07C 51/50 - Use of additives, e.g. for stabilisation
C07C 51/02 - Preparation of carboxylic acids or their salts, halides, or anhydrides from salts of carboxylic acids
C07C 51/235 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of —CHO groups or primary alcohol groups
C07C 51/44 - SeparationPurificationStabilisationUse of additives by change of the physical state, e.g. crystallisation by distillation
C07C 51/48 - SeparationPurificationStabilisationUse of additives by liquid-liquid treatment
47.
Method for recovering di-trimethylolpropane and trimethylolpropane-enriched product streams from the side streams of trimethylolpropane production
Process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, characterized in that these high-boiling fractions and residues are combined and a polar solvent is added to produce a solution and the solution is treated at a temperature of 120 to 280° C. and at a pressure of 2 to 25 MPa with hydrogen in the presence of a solid nickel catalyst and an acidic compound. After catalytic treatment, the solution is subjected to multi-stage distillation including with a thin film evaporator with a column attachment in order to recover ditrimethylolpropane and trimethylolpropane-enriched product streams.
C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
C07C 29/10 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
C07D 319/06 - 1,3-DioxanesHydrogenated 1,3-dioxanes not condensed with other rings
C07C 29/80 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
C07C 29/90 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification of at least one compound using hydrogen only
C07C 41/44 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification
48.
Process for obtaining trimethylolpropane-enriched product streams from the secondary streams of trimethylolpropane preparation
A process for obtaining trimethylolpropane-enriched product streams from the forerun fractions obtained in the distillative purification of trimethylolpropane is characterized in that: (a) the forerun fractions are treated separately or in combination at a temperature of 160 to 280° C. and at a pressure of 1 to 30 MPa with hydrogen in the presence of a hydrogenation catalyst and an acidic compound; and (b) the reaction mixture obtained after step a) is separated by distillation into a trimethylolpropane-enriched, catalyst-free product stream and a catalyst-containing product stream. The trimethylolpropane is prepared by the Cannizzaro process using alkali metal or alkaline earth metal compounds or stoichiometric amounts of trialkylamines, or is produced by the hydrogenation process in the presence of catalytic amounts of trialkylamines or alkali metal or alkaline earth metal compounds.
C07C 29/90 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification of at least one compound using hydrogen only
C07C 29/80 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
A47L 9/14 - Bags or the likeAttachment of, or closures for, bags
49.
Method for recovering di-trimethylolpropane by distillation
Distillative process for obtaining ditrimethylolpropane from solutions includes separating ditrimethylolpropane from the solution in a first distillation unit into a first tops fraction comprising low-boiling compounds having a lower boiling point than ditrimethylolpropane and a first bottoms fraction; introducing the first bottoms fraction into a second distillation unit having at least 5 theoretical plates, said unit being configured as a thin-film evaporator with a column attachment and drawing off a second tops fraction comprising intermediate-boiling compounds having a lower boiling point than ditrimethylolpropane as well as withdrawing a second bottoms fraction from the second distillation unit and introducing the second bottoms fraction into a third distillation unit having at least 4 theoretical plates, said unit being configured as a thin-film evaporator with a column attachment, such that ditrimethylolpropane is obtained as a third tops fraction and high boilers are removed as a third bottoms fraction.
The invention relates to a continuous method for carrying out a multiphase aldol condensation reaction to obtain mixed α,β-unsaturated aldehydes by reacting a mixture of two aliphatic aldehydes having different numbers of carbon atoms, i.e. 2 to 5, in the molecule in a vertical tubular reactor in a concurrent flow in the presence of an aqueous solution of a basically reacting compound. In said method, the aldehyde mixture is dispersed in the aqueous phase in the form of drops, and the aqueous solution of the basically reacting compound flows through the tubular reactor as a continuous phase in laminar conditions.
C07C 45/72 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by isomerisationPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing C=O groups with the same or other compounds containing C=O groups
C07C 45/74 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by isomerisationPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing C=O groups with the same or other compounds containing C=O groups combined with dehydration
C07C 45/45 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by condensation
51.
Method for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the side-streams in trimethylolpropane production
The present invention relates to a process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, wherein an aqueous solution of these fractions and residues is catalytically hydrogenated in the presence of an acidic compound and, after removing solids, contacted both with basic and with acidic ion exchangers. A trimethylolpropane-enriched product stream can be distilled out of the aqueous eluate obtained, leaving ditrimethylolpropane as the distillation residue.
C07C 41/34 - SeparationPurificationStabilisationUse of additives
C07C 29/74 - SeparationPurificationStabilisationUse of additives
C07C 29/10 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
C07C 29/80 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
C07C 29/90 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification of at least one compound using hydrogen only
C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
C07C 41/44 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification
2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms, or a hydroxyalkyl radical having 1 to 5 carbon atoms, m is an integer of 1 to 10, o is an integer of 2 to 15, with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms in the presence of an adsorbent and in the presence of metal compounds selected from the group of titanium compounds, zirconium compounds, tin compounds, zinc compounds, iron compounds and aluminum compounds as a catalyst while removing the water formed and subsequently treating with steam, characterized in that the polyol ester obtained is aftertreated first with an oxidizing or reducing compound and immediately thereafter with steam at a temperature of 150 to 250° C. and over a period of 0.5 to 5 hours.
The present invention relates to a process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarbocxylic acids having 3 to 20 carbon atoms, the reaction taking place in the presence of a Lewis acid comprising at least one element from groups 4 to 14 of the Periodic Table of the Elements as catalyst, and in the presence of an adsorbent, the reaction product being subjected subsequently to a steam treatment.
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
54.
Method for reprocessing a liquid hydroformylation product
The invention relates to a method for reprocessing a liquid product of a hydroformylation reaction, wherein the liquid phase produced in a release stage is supplied to a separating device from which a liquid flow containing rhodium is guided away via a filter, where solids thereby separated are taken out of the process and the filtrate obtained is guided back into the hydroformylation reaction.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
55.
Process for preparing neopentyl glycol by cracking high boilers occurring in the production process
The present invention relates to a process for obtaining neopentyl glycol by hydrogenating cracking of high-boilers occurring in the production process in the presence of copper-chromite catalysts. The hydrogenating cracking proceeds in the absence of solvent at a temperature of 140 to 220° C. and at pressures of 7 to 28 MPa.
The present invention relates to a method of producing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give the hydroxypivalinaldehyde with subsequent liquid phase hydrogenation in the presence of a nickel catalyst at a temperature of 80 to 180° C. and at a pressure of 6 to 18 MPa in the presence of an aliphatic alcohol and in the presence of water.
The present invention relates to a process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms in the presence of an adsorbent and subsequent steam treatment in the course of workup of the crude ester.
The present invention relates to a process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms by partial recycling of the aliphatic monocarboxylic acid removed into the esterification reaction or into subsequent esterification batches.
The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with ozone or ozone-containing gases and an immediately subsequent steam treatment with subsequent drying.
The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with peroxidic compounds and an immediately subsequent steam treatment with subsequent drying.
Aldehydes are produced by unmodified rhodium catalyzed hydroformylation process in a homogeneous organic phase using a solution of unmodified rhodium catalyst and an organic acid in a total amount, calculated as acid equivalent, of from greater than 3 moles to 3000 moles of acid per mole of rhodium. The organic acid is selected from: saturated aliphatic monocarboxylic acids having from 5 to 13 carbon atoms in the molecule; saturated aliphatic dicarboxylic acids having from 5 to 13 carbon atoms in the molecule; sulphonic acids having from 1 to 12 carbon atoms in the molecule; and combinations thereof. Use of the process can lead to either a significant increase in conversion without reducing selectivity for the desired aldehyde or a reduction in the specific use of rhodium.
C07C 45/50 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
