Alkyl glycoside-based micellar thickeners for surfactant systems

Patent metadata

Field	Value
Publication number	US-9579272-B2
Application number	US-201314432925-A
Country	US
Kind code	B2
Filing date	Jun 5, 2013
Priority date	Jun 15, 2012
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A rheology modifier which includes a mixture of short and long chain fatty acid esters is suitable for use in liquid surfactant-based compositions. A surfactant-based composition includes a surfactant, the rheology modifier, and water. The rheology modifier includes a mixture of alkyl glycoside fatty acid esters including a long chain fatty acid ester of an alkyl glycoside and a short chain fatty acid ester of an alkyl glycoside. The long chain fatty acid ester includes at least one fatty acid residue: R 1 (O)O—, wherein R 1 is a C 12 or higher hydrocarbon. The short chain fatty acid ester includes least one fatty acid residue: R 2 (O)O—, wherein R 2 is a C 6 -C 10 hydrocarbon.

First claim

What is claimed is:

1. A composition comprising:
a surfactant;
a rheology modifier comprising a mixture of alkyl glycoside fatty acid esters comprising:
a long chain fatty acid ester of an alkyl glycoside, the long chain fatty acid ester consisting of at least one fatty acid ester group R 1 (O)O—, wherein R 1 is a C 12 or higher hydrocarbon, and
a short chain fatty acid ester of an alkyl glycoside, the short chain fatty acid ester consisting of least one fatty acid ester group R 2 (O)O—, wherein R 2 is a C 6 -C 10 hydrocarbon; and
water,
wherein a molar ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is less than 1:1.

2. The composition of claim 1 , wherein in the long chain fatty acid ester R 1 is a C12-C 23 hydrocarbon.

3. The composition of claim 1 , wherein in the long chain fatty acid ester, R 1 is a C 13 or higher hydrocarbon.

4. The composition of claim 1 , wherein the long chain fatty acid comprises at least one fatty acid ester in which R 1 is a C 18 hydrocarbon.

5. The composition of claim 1 , wherein the long chain fatty acid ester comprises at least one fatty acid ester in which R 1 is an unsaturated hydrocarbon.

6. The composition of claim 1 , wherein the long chain fatty acid ester comprises a plant-derived fatty acid ester group derived from at least one of linoleic acid, linolenic acid, oleic acid, stearic acid, and esters thereof.

7. The composition of claim 1 , wherein the short chain fatty acid ester comprises at least one fatty acid ester group R 2 (O)O—, wherein R 2 is a C 8 -C 10 hydrocarbon.

8. The composition of claim 1 , wherein the short chain fatty acid ester comprises at least one plant based fatty acid ester derived from capric and caprylic acids or esters thereof.

9. The composition of claim 1 , wherein the short chain fatty acid ester comprises at least one of hexanoate, heptanoate, caprylate, pelargonate, and caprate, of methyl glucoside, and combinations thereof, and the long chain glucoside ester comprises at least one of laurate, myristate palmitate, stearate, isostearate, linoleate, linolenate, oleate, and behenate of methyl glucoside, and combinations thereof.

10. The composition of claim 9 , wherein the rheology modifier comprises alkyl glucoside esters derived from caprylic acid, capric acid, and plant-based oleic acid, or their esters.

11. The composition of claim 1 , wherein a ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is at least 0.1:1.

12. The composition of claim 11 , wherein the ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is at least 0.2:1.

13. The composition of claim 11 , wherein the ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is at least 0.3:1.

14. The composition of claim 1 , wherein the ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is up to 0.8:1.

15. The composition of claim 14 , wherein the molar ratio of long chain fatty acid ester to short chain fatty acid ester groups in the rheology modifier is up to 0.7:1.

16. The composition of claim 1 , wherein a molar ratio of long chain fatty acid ester groups to short chain fatty acid ester groups in the rheology modifier is 0.2:1 to 0.8:1.

17. The composition of claim 1 , wherein the long chain fatty acid ester comprises plant-based oleic ester groups and the short chain fatty acid ester comprises caprylic and capric ester groups and wherein a molar ratio of unsaturated C 18 ester groups to other ester groups (O/CC ratio) is from 0.2:1 to 0.7:1.

18. The composition of claim 17 , wherein the O/CC ratio is from 0.35:1 to 0.6:1.

19. The composition of claim 1 , wherein a degree of esterification per molecule of glycoside is from 0.7:1 to 1.5:1.

20. The composition of claim 19 , wherein the degree of esterification is from 0.8:1 to 1.2:1.

21. The composition of claim 1 , wherein the alkyl glycoside comprises an alkyl glucoside.

22. The composition of claim 21 , wherein the alkyl glucoside is a C 1 -C 30 alkyl glucoside.

23. The composition of claim 22 , wherein the alkyl glucoside comprises methyl glucoside.

24. The composition of claim 1 , wherein the alkyl glycoside fatty acid esters have a molecular weight of less than 1000.

25. The composition of claim 1 , further comprising a non-aqueous solvent.

26. The composition of claim 1 , wherein the rheology modifier increased the viscosity of the composition by a factor of at least 10 when the alkyl glycoside fatty acid esters are at a total concentration of up to 4 wt. % of the surfactant composition, as compared to an otherwise identical composition without the rheology modifier.

27. The composition of claim 1 , wherein none of the alkyl glycoside fatty acid esters in the rheology modifier is alkoxylated.

28. The composition of claim 1 , wherein the rheology modifier is present at a concentration of at least 0.1 wt. %.

29. The composition of claim 28 , wherein the rheology modifier is present at a concentration of at least 0.5 wt. %.

30. The composition of claim 29 , wherein the rheology modifier is present at a concentration of at least 1 wt. %.

31. The composition of claim 1 , wherein the rheology modifier is present at a concentration of up to 5 wt. %.

32. The composition of claim 31 , wherein the rheology modifier is present at a concentration of up to 3 wt. %.

33. The composition of claim 1 , wherein the surfactant is present at a concentration of at least 0.01 wt. %.

34. The composition of claim 32 , wherein the surfactant is present at a concentration of at least 1 wt. %.

35. The composition of claim 1 , wherein the surfactant is present at a concentration of up to 20 wt. %.

36. The composition of claim 1 , wherein a ratio by weight of the alkyl glycoside fatty acid esters to the surfactant is less than 1:1.

37. The composition of claim 1 , wherein a ratio by weight of the alkyl glycoside fatty acid esters to the surfactant is up to 0.5:1.

38. The composition of claim 1 , wherein the surfactant comprises an anionic surfactant.

39. The composition of claim 38 , wherein the surfactant further comprises a zwitterionic surfactant.

40. The composition of claim 1 , wherein the composition is free of alkoxylated surfactants.

41. The composition of claim 1 , wherein the composition is free of sulfate based surfactants.

42. The composition of claim 1 , wherein the rheology modifier is not alkoxylated.

43. The composition of claim 1 , further comprising at least 0.1% of a salt selected from soluble inorganic salts and organic salts having a molecular weight of less than 300.

44. The composition of claim 43 , wherein the salt comprises a soluble inorganic salt.

45. The composition of claim 44 , wherein composition comprises at least 0.2% of the soluble inorganic salt.

46. The composition of claim 1 , wherein the composition comprises

Assignees

• Lubrizol Advanced Mat Inc

Inventors

• Galleguillos Ramiro
• Wu Anchuu

Classifications

• A61K2800/48

  Thickener, Thickening system · CPC title

• A61K8/602 Primary

  Glycosides, e.g. rutin · CPC title

• A61Q5/02

  Preparations for cleaning the hair · CPC title

• C11D3/226

  esterified · CPC title

• A61Q19/10

  Washing or bathing preparations · CPC title