COMPOSITION FOR KERATIN FIBERS

• US 20190328639A1
• Filed: 05/08/2019
• Published: 10/31/2019
• Est. Priority Date: 05/12/2015
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: PLOS, Gregory, FEUILLETTE, Laetitia, KOMURE, Natsumi
• Granted Patent: US 11,896,697 B2
• Time in Patent Office: Days
• CPC Class Codes: A61K 2800/30 Characterized by the absence of a particular group of ingredients
• CPC Class Codes: A61K 2800/48 Thickener, Thickening system
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/466 containing sulfonic acid derivatives; Salts
• CPC Class Codes: A61K 8/4913 having five membered rings, e.g. pyrrolidone carboxylic acid
• CPC Class Codes: A61K 8/4946 Imidazoles or their condensed derivatives, e.g. benzimidazoles
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61K 8/731 Cellulose; Quaternized cellulose derivatives
• CPC Class Codes: A61K 8/737 Galactomannans, e.g. guar; Derivatives thereof
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring

Abstract

The present invention relates to a composition for reshaping keratin fibers with heat, comprising: (a) at least one organic alkaline agent having a pKa value of from 8.0 to 13.5; and (b) at least one polymeric thickener, (c) at least one organic acidic agent having pKa value of less than 3.5, and/or (d) at least one alkaline agent; wherein the composition has a pH of from 8.0 to 12, preferably from 8.5 to 11.5, and more preferably from 9.0 to 11.0. The composition according to the present invention is preferably a cosmetic composition, for keratin fibers, such as hair, and can be used for a process for reshaping the keratin fibers with heat. The composition according to the present invention can provide the keratin fibers with a sufficient reshaping efficiency such as strong wave intensity of the curled keratin fibers and good usability.

Claims

1-20. -20. (canceled)

21. A method for reshaping keratin fibers with heat, comprising:

applying onto the keratin fibers a composition comprising;

at least one organic alkaline agent having a pKa value ranging from about 8.0 to about 13.5; and

at least one polymeric thickener,

wherein the composition has a pH ranging from about 8.0 to about 12 heating the keratin fibers at 50°

C. to 250°

C. for 1 minute to 2 hours; and

optionally rinsing and/or drying the keratin fibers.

22. The method according to claim 21, wherein the at least one organic alkaline agent has a pKa value ranging from about 8.0 to about 12.5.

23. The method according to claim 21, wherein the at least one organic alkaline agent is chosen from amino acids, monoamines, diamines, polyamines, guanidine, urea, their derivatives, or mixtures thereof.

24. The method according to claim 21, wherein the at least one organic alkaline agent is present in an amount ranging from about 0.1% to about 25% by weight, relative to the total weight of the composition.

25. The method according to claim 21, wherein the composition does not comprise ammonia, or comprises less than about 1% by weight of ammonia, relative to the total weight of the composition.

32. The method according to claim 21, wherein the at least one polymeric thickener comprises at least one sugar unit.

33. The method according to claim 21, wherein the at least one polymeric thickener is present in an amount ranging from about 0.01% to about 10% by weight, relative to the total weight of the composition.

34. The method according to claim 21, wherein the viscosity of the composition is at least about 800 mPa·

s.

35. The method according to claim 21, wherein the composition does not comprise a thiol compound, or comprises less than about 1% of a thiol compound, relative to the total weight of the composition.

36. The method according to claim 21, wherein the composition does not comprise a reducing agent or oxidizing agent, or comprises less than about 1% of a reducing agent or an oxidizing agent, relative to the total weight of the composition.

37. The method according to claim 21, wherein the keratin fibers are heated to a temperature of at least about 80°

C.

26. A method for reshaping keratin fibers with heat, comprising:

applying onto the keratin fibers a composition comprising;

at least one organic acidic agent having a pKa value of less than about 3.5;

at least one polymeric thickener; and

at least one alkaline agent,

wherein the composition has a pH ranging from about 8 to about 12; and

the composition is free of ammonia or methionine heating the keratin fibers at 50°

C. to 250°

C. for 1 minute to 2 hours; and

optionally rinsing and/or drying the keratin fibers.

27. The method according to claim 26, wherein the at least one organic acidic agent has a pKa value ranging from about 1.0 to about 3.0.

28. The method according to claim 26, wherein the at least one organic acidic agent is chosen from carboxylic acids, aminosulfonic acids, amino acids, oligomers of amino acids, or mixtures thereof.

29. The method according to claim 26, wherein the at least one organic acidic agent is present in an amount ranging from about 0.1% to about 25% by weight, relative to the total weight of the composition.

30. The method according to claim 26, wherein the at least one alkaline agent is an inorganic alkaline agent chosen from alkaline metal hydroxides, alkaline earth metal hydroxides, alkaline metal phosphates, or monohydrogenophosphates.

31. The method according to claim 26, wherein the at least one alkaline agent is present in an amount ranging from about 0.1% to about 20% by weight, relative to the total weight of the composition.