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US 11,696,885 B2Granted
Rhamnolipid derivatives as emulsifiers and dispersing aids
AssigneeEvonik Operations GmbH
InventorsXin Lu, Sandra Nattland, Achim Friedrich, Hans Henning Wenk
Life of this patent
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Abstract
The invention relates to a dispersion containing at least one rhamnolipid derivative and also to the use of the rhamnolipid derivatives as emulsifier or dispersing aid.
Claims23
A dispersion, containing
- A) a at least one rhamnolipid derivative,
- B) at least one cosmetic oil, and
- C) water,
- wherein the at least one rhamnolipid derivative is selected from the group consisting of rhamnolipid ester of the general formula (I) and rhamnolipid amide of the general formula (II):
- general formula (I),
- wherein
- m=2, 1 or 0,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms, and
- R3=aliphatic radical having from 10 to 32 carbon atoms;
- general formula (II),
- wherein
- m=2, 1 or 0,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms,
- R3a=organic radical having from 10 to 22 carbon atoms,
- and R3b=organic radical having from 10 to 22 carbon atoms,
- wherein the sum of the carbon atoms contained in R3a and R3b is 20 to 44;
- and
- wherein the at least one cosmetic oil has an interfacial tension with respect to water of >5 mN/m.
21 more elements
A dispersion, containing at least A) at least one rhamnolipid derivative selected from the group consisting of rhamnolipid ester of the general formula (I) and rhamnolipid amide of the general formula (II):
- general formula (I),
- wherein
- m=1,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms, and
- R3=aliphatic radical having from 10 to 32 carbon atoms;
- general formula (II),
- wherein
- m=1,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms,
- R3a=organic radical having from 10 to 32 carbon atoms,
- and R3b=organic radical having from 10 to 32 carbon atoms,
- wherein the sum of the carbon atoms contained in R3a and R3b is 20 to 44.
15 more elements
A method of emulsifying and/or dispersing, comprising:
- preparing an emulsion and/or dispersion with
- A) at least one rhamnolipid derivative selected from the group consisting of a rhamnolipid ester of the general formula (I) and a rhamnolipid amide of the general formula (II):
- general formula (I),
- wherein
- m=2, 1 or 0,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms, and
- R3=aliphatic radical having from 10 to 32 carbon atoms;
- general formula (II),
- wherein
- m=2, 1 or 0,
- n=1 or 0,
- and when n=0, the C2 of the sugar is substituted with an OH group,
- R1=organic radical having from 5 to 13 carbon atoms,
- R2=independently of one another, identical or different, organic radical having from 5 to 13 carbon atoms,
- R3a=organic radical having from 10 to 22 carbon atoms,
- and R3b=organic radical having from 10 to 22 carbon atoms,
- wherein the sum of the carbon atoms contained in R3a and R3b is 20 to 44
- B) at least one cosmetic oil;
- and
- C) water.
20 more elements
Dependencies are inferred from the claim text.