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Structured composition containing tertiary amide-terminated polyamide for personal care products

Imported: 23 Feb '17 | Published: 22 Oct '02

Nelson E. Lawson, Mark S. Pavlin

USPTO - Utility Patents

Abstract

1. A structured composition comprising at least one liquid oil phase structured by at least one gellant, said at least one gellant comprising a tertiary amide-terminated polyamide resin (ATPA) of the formula (1):

wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R

1 at each occurrence is independently selected from a C

1-22 hydrocarbon group; R

2 at each occurrence is independently selected from a C

2-42 hydrocarbon group; R

3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R

3a at each occurrence is independently selected from hydrogen, C

1-10 alkyl and a direct bond to R

3 or another R

3a such that the N atom to which R

3 and R

3a are both bonded is part of a heterocyclic structure defined in part by R

3a—N—R

3; the composition further comprising at least one amphiphile compound that is a liquid at ambient temperature or has a melting point below 35° C., and has an HLB value of less than 8.0.

Claims

1. A structured composition comprising at least one liquid oil phase structured by at least one gellant, said at least one gellant comprising a tertiary amide-terminated polyamide resin (ATPA) of the formula (1):

2. The composition of claim 1 wherein terminal amide groups of the formula C(═O)N(R

1)(R

1) constitute from 20% to 35% of the total of the amide groups.

3. The composition of claim 1 wherein n is an integer from 1 to 5.

4. The composition of claim 1 wherein R

2 is a C

30-42 hydrocarbon group having the structure of polymerized fatty acid with the carboxylic acid groups removed.

5. The composition of claim 1 wherein between 1% and 50% of the R

2 groups are a C

4-19 hydrocarbon group.

6. The composition of claim 1 wherein R

3 is a C

2-36 hydrocarbon group and R

3a is hydrogen.

7. The composition of claim 1 wherein at least 1% of the —N(R

3a)—R

3—N(R

3a)— groups are independently selected from polyalkylene amine,

wherein R

c is a C

1-3alkyl group.

8. The composition of claim 1 further comprising diamide having formula (1) wherein n=0, such that the ratio of terminal amide groups to the total of the amide groups in the resin is from 0.1 to 0.7.

9. The composition of claim 1 in which the amphiphile compound includes a lipophile part bonded to a polar part, with the lipophile part including a carbon chain having at least 8 carbon atoms.

10. The composition of claim 1 in which the amphiphile compound includes a lipophile part bonded to a polar part, with the lipophile part including a carbon chain having at least 16 to 32 carbon atoms.

11. The composition of claim 1 in which the amphiphile compound includes a lipophile part bonded to a polar part, with the lipophile part including a carbon chain having at least 18 to 28 carbon atoms.

12. The composition of claim 9 in which the polar part is selected from the group consisting of alcohols and polyols having from 1 to 12 hydroxyl groups, polyoxyalkylenes having at least 2 oxyalkylene groups and having from 0 to 20 propoxylated groups and/or from 0 to 20 ethoxylated groups.

13. The composition of claim 1 wherein the amphiphile compound is selected from: (a) an ester of stearic, palmitic, behenic, hydroxystearic, oleic, or isostearic acid or mixtures thereof and glycerol, ethylene glycol, propylene glycol, sucrose, sorbitol, or methylglucose; (b) an polyoxyalkene ether of a C-12 to C-26 branched- or linear-chain fatty alcohol or castor oil and; c) a C-12 to C-26 branched-chain fatty alcohol such as octyldodecanol

14. The composition of claim 1 wherein the amphiphile compound is from 2% to 15% of the total weight of the composition.

15. The composition of claim 1 wherein the ATPA is from 5 to 40% of the total weight of the composition.

16. The composition of claim 1 wherein the liquid oil phase comprises more than 50% oil or a mixture of non-polar oils.

17. The composition of claim 1 wherein the liquid oil phase comprises at least one hydrocarbon oil of mineral or synthetic origin.

18. The composition of claim 1 wherein the liquid oil phase comprises at least one oil selected from parleam oil, isoparaffins, and squalane or mixtures thereof.

19. The composition of claim 1 wherein the liquid oil phase is from 5 to 99% of the total weight of the composition.

20. The composition of claim 1 wherein the liquid oil phase is from 20 to 75% of the total weight of the composition.

21. The composition of claim 1 formulated for the care and/or treatment and/or making-up of keratinous substances.

22. The composition of claim 1 further comprising at least one coloring agent.

23. The composition of claim 22 in which the coloring agent is chosen from lipophile coloring agents, hydrophile coloring agents, pigments, mother-of-pearl, and mixtures thereof.

24. The composition of claim 22 in which the coloring agent is from 0.01 to 40% of the total weight of the composition.

25. The composition of claim 1 further comprising at least one additive selected from water, antioxidants, essential oils, preservatives, neutralizers, liposoluble polymers, silicone oil, cosmetic or dermatological active principles, fillers, perfumes, waxes, and mixtures thereof.

26. A structured composition comprising a cosmetically acceptable medium containing at least one liquid-fatty phase structured by at least one gellant, said at least one gellant comprising a tertiary amide-terminated polyamide resin (ATPA) of the formula (1):

27. The composition of claim 26 in molded form.

28. The composition of claim 26 in the form of a mascara, eye liner, make-up foundation, lipstick, deodorant, body make-up, make-up remover, eye shadow, rouge, product to remove rings round the eyes, medicated shampoo or creme rinse, insect repellent, sun protection product, or face or body care product.

29. The composition of claim 26 containing pigment.

30. A cosmetic care, make-up or treatment process for the keratinous substances of human beings comprising the application on the keratinous substances of the composition of claim 1.

31. A process for the treatment or care of keratinous substances of a human being, comprising the application on the keratinous substance of the composition of claim 26.

32. A method for forming a structured composition according to claim 1, the method comprising combining ATPA at elevated temperature with at least one liquid oil phase and at least one amphiphile compound that is a liquid at ambient temperature and has an HLB value of less than 8, so as to form a homogenous solution upon stirring, and allowing the homogenous solution to cool to ambient temperature.

33. The method of claim 31 wherein the homogenous solution has a hardness of between 20 and 2,000 g at ambient temperature.