US 5,393,305 A · Two-part aqueous composition for coloring hair, which forms a gel on mixing of the two parts

Abstract

A two part aqueous composition for coloring and providing durable conditioning to human hair which forms a gel on mixing of an alkaline aqueous lotion first part having a pH of from about 7 to about 11 containing from about 0.005% by weight to about 5% by weight of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, from about 0.1% to about 5% of a cationic polymer, from about 0.5% to about 15% by weight of an anionic or amphoteric surfactant or mixture thereof and at least 70% by weight water, and an aqueous developer second part having a pH of from about 2 to about 6 containing from about 0.5% by weight to about 40% by weight of a peroxide oxidizer and from about 0.1% by weight to about 20% by weight of an anionic polymer, the anionic polymer being characterized in that it is insoluble in the developer and dissolves in the gel which forms when the lotion and developer are mixed.

Claims15

Dependent claims

A two-part aqueous composition for coloring and providing durable conditioning to human hair which forms a gel on mixing of the two parts comprising:

(a) an aqueous lotion first part having a pH of from about 7 to about 11 containing from about 0.005 % by weight to about 5 % by weight of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, from about 0.1% to about 5 % by weight of a cationic polymer, from about 0.5 % to about 15 % by weight of an anionic or amphoteric surfactant or mixture thereof and at least 70% by weight water, wherein the cationic polymer is characterized in that it forms an insoluble precipitate when mixed with said surfactant in water at a pH above 7 and the precipitate does not readily dissolve upon the addition of more of said surfactant;
and
(b) an aqueous developer second part having a pH of from about 2 to about 6 containing from about 0.5 % by weight to about 40% by weight of a peroxide oxidizer and from about 0.1% by weight to about 20% by weight of an anionic polymer, wherein the anionic polymer is a polymer of two or more monomers selected from the group consisting of acrylic acid, methacrylic acid and their lower alkyl esters and is insoluble in the developer but dissolves to form said gel when the lotion and developer are mixed.

A kit containing a two-part aqueous composition which forms a gel on mixing of the two parts for coloring human hair comprising separate first and second containers:

(a) the first container containing an aqueous lotion first part having a pH of from about 7 to about 11 containing from about 0.005 % to about 5 % by weight of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, from about 0.1% to about 5 % by weight of a cationic polymer, from about 0.5 % to about 15 % by weight of an anionic or amphoteric surfactant or mixture thereof and at least 70% by weight water, wherein the cationic polymer is characterized in that it forms an insoluble precipitate when mixed with said surfactant in water at a pH above 7 and said precipitate does not readily dissolve upon the addition of more of said surfactant;
and
(b) the second container containing an aqueous developer second part having a pH of from about 2 to about 6 containing from about 0.5 % to about 40% by weight of a peroxide oxidizer and from about 0.1% to about 20% by weight of an anionic polymer, wherein the anionic polymer is a polymer of two or more monomers selected from the group consisting of acrylic acid, methacrylic acid and their lower alkyl esters and is insoluble in the developer but dissolves to form said gel when the lotion and developer are mixed.

A method of coloring human hair which comprises contacting the hair with a mixture of a two-part aqueous composition which forms a gel on mixing of the two parts comprising:

(a) an aqueous lotion first part having a pH of from about 7 to about 11 containing from about 0.005 % to about 5 % by weight of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, from about 0. 1% to about 5 % by weight of a cationic polymer, from about 0.5% to about 15% by weight of an anionic or amphoteric surfactant or mixture thereof and at least 70 % by weight water, wherein the cationic polymer is mixed with the surfactant in water at a pH above 7 to form an insoluble precipitate which does not readily dissolve upon the addition of more of the surfactant;
and
(b) an aqueous developer second part having a pH of from about 2 to about 6 containing from about 0.5 % to about 40% by weight of a peroxide oxidizer and from 0.1% to about 20% by weight of a water insoluble anionic polymer;
wherein the anionic polymer is a polymer of two or more monomers selected from the group consisting of acrylic acid, methacrylic acid and their lower alkyl esters and is insoluble in the developer but dissolves to form said gel when the lotion and developer are mixed, and maintaining such contact until the hair is permanently colored.

1 more element

Dependencies are inferred from the claim text.

Two-part aqueous composition for coloring hair, which forms a gel on mixing of the two parts

Life of this patent

Two-part aqueous composition for coloring hair, which forms a gel on mixing of the two parts

Life of this patent

Abstract

Claims15