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8933277 Process for preparing polymethylols  
A process is provided for recovering components from a low boiler mixture which is obtained in the distillation of hydrogenation effluents from the preparation of polymethylols, by multistage...
8884076 Method for preparing polymethylols  
The present invention relates to a process for distilling an aqueous polymethylol mixture which comprises a polymethylol of the formula (I) (HOCH2)2—C—R2 (I) in which each R is independently a...
8710278 Process for producing polyols  
A process for producing polyols (such as neopentyl glycol) is disclosed which comprises reacting formaldehyde and another aldehyde in the presence of a trialkylamine catalyst and a base promoter...
8519084 Use of a C11 diol or C11 diol mixture for producing polymers  
A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of 2-(2-methylbutyl)-2-propyl-1,3-propanediol of the...
8481061 Cosmetic composition  
A cosmetic composition is provided herein, the composition comprising: an ester of pentaerythritol and a benzoic acid having the formula (I) wherein R1 and R2 independently indicate a hydrogen...
8410010 Process for the production of polyol base catalysts  
The present disclosure relates to a process for the production of a base complex catalyst comprising reacting a hydroxide base with a polyalcohol, under vacuum pressure, at a temperature in the...
8394998 Method of producing neopentyl glycol  
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...
8389778 Preparation of mannitol modification III  
Methods for preparing mannitol modification III are described herein. The methods relate to preparing solutions of mannitol in a suitable solvent and an auxiliary agent and solidifying from the...
8367877 Methods of purifying 1,2,4-butanetriol  
Methods of purifying BT are disclosed. The method comprises adding at least one polyhydroxyl compound to a crude BT mixture comprising BT and at least one boron-containing compound to form a...
8354561 Trimethylolpropane color improvement  
The present invention provides a process for improving the color of trimethylolpropane which comprises the steps of a) supplying a crude, aqueous base solution of trimethylolpropane, containing...
8293950 Method of preparing pentaerythritol  
A method of preparing monopentaerythritol, dipentaerthritol, and sodium formate through high temperature condensation and cascade recrystallization is disclosed. The method lowers the energy...
8232432 Specific branched aldehydes, alcohols, surfactants, and consumer products based thereon  
A process for preparing a detergent alcohol mixture comprising the steps of providing one or more poly-branched poly-olefins, wherein the poly-branched poly-olefins must contain one non-branched...
8232431 Specific branched surfactants and consumer products  
A surfactant composition comprising one or more surfactant derivatives of isomers of acyclic detergent alcohol having 11, 16, or 21 carbon atoms and two, three, four or five methyl or ethyl...
8101806 Granulated sorbitol and process for its preparation  
The present invention relates to a granulated sorbitol of essentially γ crystalline form and having a high sorbitol content, characterized in that it has a specific surface area, determined...
8044249 Specific branched aldehydes, alcohols, surfactants, and consumer products based thereon  
A process for preparing a detergent alcohol mixture comprising the steps of providing one or more poly-branched poly-olefins, wherein the poly-branched poly-olefins must contain one non-branched...
8003830 Method for improving the color number of trimethylolpropane  
The present invention relates to a method for the production of trimethylolpropane with a low color number by treatment with activated carbon.
7994369 Specific polybranched polyaldehydes, polyalcohols, and surfactants, and consumer products based thereon  
Acyclic polyaldehydes and polyalcohols having 11, 16 or 21 carbon atoms and comprising at least two aldehyde or hydroxyl alcohol groups, at least three branches, and three or less carbon-carbon...
7888454 Substituted alditol compounds, compositions, and methods  
Substituted alditol or carbohydrate compounds having a specified general formula are provided. A method for synthesizing such substituted alditol or carbohydrate compounds is also provided.
7767865 Method for producing hydroxypivalaldehyde and neopentyl glycol  
The preparation of hydroxypivalaldehyde is effected by aldolizing isobutyraldehyde with formaldehyde and subsequently working up the resulting reaction effluent by distillation, wherein the...
7713903 Carrier, a process for preparing the carrier, an olefin epoxidation catalyst, a process for preparing the catalyst, and a process for the production of an olefin oxide, A 1,2-diol, A 1,2-diol ether, or an alkanolamine  
A carrier that may be used in the manufacture of an olefin epoxidation catalyst is provided that is prepared from a process involving depositing boron on the carrier and subsequently calcining the...
7569736 Process for producing monopentaerythritol of high purity and monopentaerythritol produced by the process  
The invention relates to a process for producing monopentaerythritol of high purity and monopentaerythritol produced by the process. Formaldehyde is reacted with acetaldehyde in an aqueous...
7439406 Method for hydrogenating methylol alkanals  
Disclosed is a method for the catalytic hydrogenation of methylol alkanals of general formula (I), where R1 and R2 independently represent an additional methylol group or an alkyl group having...
7335689 Dihydroxyl compounds and compositions for cholesterol management and related uses  
The present invention relates to novel dihydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such...
7321070 Synthesis of isotopically labeled R- or S-[13C, 2H] glycerols  
The present invention is directed to asymmetric chiral labeled glycerols including at least one chiral atom, from one to two 13C atoms and from zero to four deuterium atoms bonded directly to a...
7307194 Method for producing 1, 6 hexane diol  
The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols...
7301058 Method for increasing yield in the production of polyvalent alcohols by splitting by-products containing acetal  
The invention relates to a method for increasing yield in the production of polyvalent alcohols, especially trimethylolpropane, obtained by condensing formaldehyde with a higher aldehyde....
7253326 Method for preparing trimethylolproane  
The present invention relates to a method for preparing trimethylolpropane (TMP) comprising the steps of: 1) synthesizing trimethylolpropane by using n-butyl aldehyde, an aqueous solution of...
7211701 Preparation of trimethylolpropane  
The present invention relates to a process for preparing trimethylolpropane having a low APHA color number.
7087800 Process for producing a polyol  
A process for producing a polyol by reacting an aliphatic aldehyde with formaldehyde in the presence of a basic catalyst, which comprises a step of concentration which comprises removing water and...
7057080 Color index of multivalent alcohols by hydrogenation  
A process is provided for improving the color number of polyhydric alcohols, especially trimethylolpropane, by catalytic hydrogenation, the polyhydric alcohol used in the hydrogenation having been...
6949684 Process for preparing 1,2,4-butanetriol  
An object of the present invention is to provide a process wherein 1,2,4-butanetriol can be obtained safely, easily and inexpensively without causing problems concerning wastewater. A malic...
6809224 Method for the separation of formaldehyde from a reaction mixture containing polyols by the addition of solvents before and/or during the distillation  
Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic...
6787677 Hydrogenation of carbonyl compounds  
In a process for the catalytic hydrogenation of a carbonyl compound or a mixture of two or more carbonyl compounds in the presence of catalyst tablets which comprise an inorganic, TiO2-containing...
6727395 Method for producing hexanediol  
A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the...
6692616 Method for purifying trimethylolpropane, which is produced by hydrogenation, by means of continuous distillation  
A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps: (a)...
6593502 Process for the preparation of polyols  
The invention relates to a process for the preparation of polyols having 3 or 4 hydroxyl groups, from an aldehyde and formaldehyde in the presence of water, followed by hydrogenation of the...
6586641 Method for the decomposition of high boiling by-products produced in the synthesis of polyhydric alcohols  
A process is provided for increasing the yield in the preparation of polyhydric alcohols obtained from methylolated alkanals by hydrogenation, wherein derivatives of these alcohols are decomposed...
6552232 Process for conducting aldol condensation reactions in ionic liquid media  
The present invention is related to a method for forming aldol condensation products, comprising reacting at least one aldehyde starting material in the presence of an ionic liquid medium and a...
6538163 Method for reduction of substituted malonates to diols  
A method for reducing a malonate having the formula R1R2C(CO2R3)(CO2R4) to a diol having the formula R1R2C(CH2OH)2 comprising treating said malonate with sodium aluminum hydride.
6506947 Fluorinated diol and method for the production thereof  
The subject-matter of the invention is a fluorinated diol and its process of preparation. The fluorinated diol corresponds to the formula (I): CnF2n+1—A—CH2OCH2—C(CH2OH)2—Rin which n has a value...
6441254 Process for preparing trimethylol compounds and formic acid  
The present invention relates to a process for preparing trimethylol compounds and formic acid by reaction of formaldehyde and aldehydes in the presence of a nitrogen base and distillation of the...
6433192 Method for producing mixtures of 1,4-butanediol, tetrahydrofuran and &ggr -butyrolactone  
In a process for preparing 1,4-butanediol, tetrahydrofuran and γ-butyrolactone by oxidation of butane to give a product stream comprising maleic anhydride, absorption of maleic anhydride from the...
6376725 1,3 butylene glycol of high purity and method for producing the same  
High purity 1,3-butylene glycol obtained from acetaldol by a liquid phase hydrogen reduction method, by adding a base to crude 1,3-butylene glycol free of high-boiling material, heat-treating the...
6369281 Process for the production of 2-butyl-2-ethyl-1,3-propanediol  
The present invention concerns a process for producing 2-butyl-2-ethyl-1,3-propanediol. According to the process, a reaction mixture is formed, containing 2-ethylhexanal and formaldehyde, into...
6350923 Hydrogenation of aldehydes  
A dialdehyde, trialdehyde or tetraldehyde or at least two thereof as aldehyde are hydrogenated by bringing into contact at least: the aldehyde;a catalyst comprising at least one metal selected...
6344592 Method of producing highly pure trimethylolpropane  
A method of producing a highly pure trimethylolpropane from a crude trimethylolpropane obtained by a reaction of n-butyl aldehyde and formaldehyde in the presence of a basic catalyst in a...
6316679 Treatment of a composition comprising a trimethylolalkane bis-monolinear formal  
A process for treating a composition containing a substantial proportion of trimethyflolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a...
6294705 Method for producing alkali metal alcoholates  
The invention relates to a method for producing alkali metal alcoholates by reacting alcohol with alkali metal in an aprotic, organic solvent in the presence of an H acceptor such as e.g....
6288286 Method for producing hexanediol-1,6  
A process for preparing 1,6-hexanediol from a carboxylic acid mixture obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases...
6288287 Process for preparing glycerol  
A process for preparing a glycerol from a crude glycerol comprising a glycerol, a diol and water, comprising feeding the crude glycerol to a preparation apparatus comprising two or more, serially...

Matches 1 - 50 out of 186 1 2 3 4 >