摘要:
Processes for preparing fatty acids are described wherein a C4-C12 fatty acid methyl ester is subjected to hydrolysis in the presence of an enzyme to form an organic phase comprising a C4-C12 fatty acid and an aqueous phase comprising methanol, wherein at least a portion of the methanol is continuously removed; and the organic phase is subsequently separated from the aqueous phase, and optionally, where the organic phase further comprises an unhydrolyzed portion of the C4-C12 fatty acid methyl ester, the unhydrolyzed portion of the C4-C12 fatty acid methyl ester is separated from the C4-C12 fatty acid.
摘要:
Processes for the enzyme-catalyzed synthesis of triglycerides containing polyunsaturated fatty acids in which the synthesis is preceded by a pre-hydrolysis in which (a) C1-4 alkyl esters of polyunsaturated fatty acids are completely or partly hydrolyzed in vacuo with continuous addition of water or are partly hydrolyzed in several stages without vacuum, (b) after the hydrolysis, the water is removed by separation or distillation and (c) the synthesis of the polyunsaturated fatty acids with glycerol in vacuo in the presence of an enzyme to form their triglycerides is carried out under low-water conditions, (d) the enzymes are removed from the triglyceride by separation or filtration and (e) the remaining fatty acids and/or possible residues of C1-4 alkyl esters are removed from the triglyceride by distillation or refining; the pre-hydrolysis and the subsequent synthesis preferably being carried out as a one-pot process in the same reactor and in the presence of the same enzyme.
摘要:
The present invention is concerned with acyl ribonucleosides and with acyl deoxyribonucleosides. It is furthermore concerned with an enzymatic process for the manufacture of acyl ribonucleosides and of acyl deoxyribonucleosides. It is furthermore concerned with the use of acyl ribonucleosides and of acyl deoxyribonucleosides for cosmetic and for pharmaceutical purposes and with their use as a food supplement for humans or animals. It is furthermore concerned with compositions containing acyl ribonucleosides and acyl deoxyribonucleosides, whereby these compositions are suitable for cosmetic or for pharmaceutical purposes or as food supplement.
摘要:
A cosmetic composition containing: (a) an aqueous phase; (b) an oil phase containing cyclohexyl cyclohexane; (c) optionally, a surfactant; and (d) optionally, an auxiliary oil component.
摘要:
A cleaning preparation for cleaning hard surfaces including at least one alkoxylated fatty alcohol corresponding to general formula (I): R—O—(CnH2nO)m—H (I) in which R is a linear or branched, saturated or unsaturated, alkyl or alkenyl group containing at least 19 carbon atoms, m represents a value of 20 or more, and n represents 2 or 3 is provided. A surfactant mixture including at least one compound corresponding to the above general formula (I), and at least one additional compound is also provided. A liquid rinse agent including water; a solubilizer; and at least one alkoxylated fatty alcohol corresponding to the above general formula (I), where the at least one alkoxylated fatty alcohol corresponding to general formula (I) is present in quantities of from about 0.1 to about 25% by weight of the rinse agent is also provided.
摘要:
Provided for are rinse aids that exhibit improved drying properties during automatic dish washing and thus allow cleaning methods at lower temperatures than customer reference agents. The rinse aids comprise a) at least one surfactant according to the general formula (I), where R1 is a saturated or unsaturated, branched or linear alkyl or alkenyl radical having 6 to 22 carbon atoms, R2 is hydrogen or an alkyl group having 1 to 6 carbon atoms or a group R3, and R3 is a group A-(O—CH2CHR4—)m—OR5 and R4 and R5 independently from each other are a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and A is a (CH2)n— group or a hydroxyl alkyl group having 2 to 6 carbon atoms and n is an integer from 1 to 6 and m is an integer or a fractional number from 1 to 10 and furthermore b) at least one hydrotrope, c) at least one organic hydroxycarboxylic acid and d) water.
摘要:
Processes for producing branched compounds are described wherein a carbonyl compound is condensed in the presence of a catalyst selected from the group consisting of acids and bases, to form an α,β-unsaturated condensation product; and the α,β-unsaturated condensation product is hydrogenated.
摘要:
Guerbet alcohols of the formula (I) CH3(CH2)nCHR1CH2OH (I) wherein R1 is a linear alkyl radical having n-1 carbon atoms and n is a number of from 5 to 11 are produced by a process which comprises contacting a fatty alcohol of the formula (II) R2OH (II) wherein R2 is a linear alkyl radical having from 6 to 12 carbon atoms with a carbonyl compound and an alkall metal hydroxide. The use of heavy metal catalysts usually associated with the production of Guerbet alcohols is avoided thereby reducing the potential for heavy metal pollution of the environment.
摘要:
Disclosed is the use of alkyl(oligo)glycosides based on selected branched fatty alcohols as hydrotropic agents, preferably for use in cleaning agents, in particular agents for automatic dish washing.
摘要:
Compounds of the formula (I): wherein each of R1-R12 is independently hydrogen or a linear C1-20 alkyl group each of A1 and A2 is a 1, 2 or 3 ring carbon atom wherein A1 is substituted by R9 and R10 and A2 is substituted by R11 and R12; and wherein at least one of R1-R12 is a linear alkyl group having from 1 to 20 carbon atoms are emollients for use in cosmetics, lubricants and pharmaceutical preparations.