Patent EP0334498A1 successfully refreshed from Google Patents.
EP0334498A1
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EP
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Surface active compounds and a process for their preparation
Assignee: Cerestar Holding BV
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Filing: 1989-02-28
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Granted: —
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Expires: 2009-02-28
Abstract
Abstract 6-C₈ to C₂₂ acyl-1-C₃ to C₁₂ alkylglucosides are a new group of surface active compounds useful in particular as emulsifiers in cosmetics, pharmaceutical compositions and foodstuffs. They are prepared by reacting a 1-C₃ to C₁₂ alkyl glucoside with a C₈ to C₂₂ fatty acid in the presence of a lipolytic enzyme and in a reaction medium containing at most 30% and preferably 0.01 to 5% water.
Inventors
- 👤 Marie-Henriette L. David
- 👤 Hilde O. J. Lemmens
- 👤 Horst Günther
- 👤 Harald W. Röper
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:16
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C12; C12P; C12P19/00; C12P19/44; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/921; Y10S435/931; Y10S435/939
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
20 words
A novel group of surface active compounds which are 6-C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucosides.
Claim 2
Dependent Claim
20 words
A novel group of surface active compounds which are 6-C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucosides.
Claim 3
Dependent Claim
86 words
A process for the preparation of a surface active glucose ester of a fatty acid in which glucose is incubated with a fatty acid in the presence of a lipolytic enzyme characterised in that a 6-C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucoside is prepared by contacting a 1-C₃ to C₁₂ alkylglucoside with the lipolytic enzyme in a reaction medium containing a C₈ to C₂₂ fatty acid and at most 30% by weight water based on the total weight of the reaction medium.
Claim 4
Dependent Claim
86 words
A process for the preparation of a surface active glucose ester of a fatty acid in which glucose is incubated with a fatty acid in the presence of a lipolytic enzyme characterised in that a 6-C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucoside is prepared by contacting a 1-C₃ to C₁₂ alkylglucoside with the lipolytic enzyme in a reaction medium containing a C₈ to C₂₂ fatty acid and at most 30% by weight water based on the total weight of the reaction medium.
Claim 5
Dependent Claim
19 words
Compounds according to claim 1 or claim 2 characterised in that the 1-C₃ to C₁₂ alkyl glucoside is 1-butylglucoside
Claim 6
Dependent Claim
43 words
Compounds according to any one of the preceding claims characterised in that the fatty acid is a C₁₀ to C₂₀ fatty acid eg. capric acid, lauric acid, myristic acid, oleic acid, linoleic acid or arachidic acid or a commercially-available mixture of fatty acids.
Claim 7
Dependent Claim
33 words
A process according to any one of claims 2 to 4 characterised in that the lipolytic enzyme is derived from Aspergillus sp., Mucor sp., Rhizopus sp., Candida cylindraceae, pig pancreas or wheat germ.
Claim 8
Dependent Claim
23 words
A process according to any one of claims 2 to 5 characterised in that the lipolytic enzyme is immobilised on an inert support.
Claim 9
Dependent Claim
23 words
A process according to any one of claims 2 to 6 characterised in that the process is carried out in an inert solvent.
Claim 10
Dependent Claim
20 words
A process according to any one of claims 2 to 7 characterised in that the temperature is 25 to 50°C.
Claim 11
Dependent Claim
35 words
A process according to any one of claims 2 to 8 characterised in that the molar ratio of 1-C₃ to C₁₂ alkylglucoside to the fatty acid is in the range 0.001 to 5 to 1.
Claim 12
Dependent Claim
29 words
A process according to any one of claims 2 to 9 characterised in that the amount of water present is 0.01 to 5% by weight of the reaction medium.
Claim 13
Dependent Claim
29 words
A composition characterised in that it comprises as surface active agent 1 to 10% of a 6 - C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucoside.
Claim 14
Dependent Claim
29 words
A composition characterised in that it comprises as surface active agent 1 to 10% of a 6 - C₈ to C₂₂ acyl - 1 - C₃ to C₁₂ alkylglucoside.
References Cited (Backward Citations)
EP0144894A2
Cited
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