One-Part Hair Dye Composition

• US 20100125956A1
• Filed: 06/07/2007
• Published: 05/27/2010
• Est. Priority Date: 06/07/2006
• Status: Active Grant

• Current Assignee: KAO Corporation
• Original Assignee: KAO Corporation
• Inventors: Koike, Kenzo, Ebato, Atsuko
• Granted Patent: US 7,862,625 B2
• Time in Patent Office: Days
• US Class Current: 8/429
• CPC Class Codes: A61K 2800/522 Antioxidants; Radical scavengers
• CPC Class Codes: A61K 8/23 Sulfur; Selenium; Tellurium; Compounds thereof
• CPC Class Codes: A61K 8/39 Derivatives containing from 2 to 10 oxyalkylene groups
• CPC Class Codes: A61K 8/492 having condensed rings, e.g. indol
• CPC Class Codes: A61K 8/676 Ascorbic acid, i.e. vitamin C
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair

Abstract

Provided is a one-part hair dye composition containing (A) one or two or more compounds represented by the formula (1), (B) an antioxidant composed of a combination of ascorbic acid or salt thereof and sulfurous acid or salt thereof, (C) a nonionic surfactant, and (D) a thickening polymer; and having a pH of from 8 to 11; and a method of controlling hair color by adjusting an (ascorbic acid or salt thereof)/(sulfurous acid or salt thereof) weight ratio in Component (B) of the composition:

(wherein, a broken line: the presence or absence of a π bond, R¹: OH or acetoxy, R²: H, —COOR (R: H, CH₃ or C₂H₅) or —COO⁻X⁺ (X⁺: cation), and R³: H, acetyl, CH₃ or C₂H₅).

Claims

1. A one-part hair dye composition comprising the following components (A) to (D):

(A) one or two or more compounds represented by the following formula (1);

2. The one-part hair dye composition according to claim 1, wherein the total content of Component (B) is from 0.01 to 5 wt. %.

3. The one-part hair dye composition according to claim 1, further comprising monoethanolamine, wherein the composition has a pH of from 9 to 11.

4. The one-part hair dye composition according to claim 1, wherein Component (A) comprises at least 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid.

5. The one-part hair dye composition according to claim 4, wherein a molar ratio of 5,6-dihydroxyindole to 5,6-dihydroxyindole-2-carboxylic acid is from 50:

50 to 999;

1.

6. A method of controlling hair color, comprising, dyeing hair with a one-part hair dye composition as claimed in any one of claims 1 to 5, and adjusting an (ascorbic acid or salt thereof)/(sulfurous acid or salt thereof) molar ratio in Component (B) of the composition.

7. The one-part hair dye composition according to claim 2, further comprising monoethanolamine, wherein the composition has a pH of from 9 to 11.

8. The one-part hair dye composition according to any one of claims 2, 3 or 7, wherein Component (A) comprises at least 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid.

9. The one-part hair dye composition according to claim 8, wherein a molar ratio of 5,6-dihydroxyindole to 5,6-dihydroxyindole-2-carboxylic acid is from 50:

50 to 999;

1.

10. A method of controlling hair color, comprising, dyeing hair with a one-part hair dye composition as claimed in claim 9, and adjusting an (ascorbic acid or salt thereof)/(sulfurous acid or salt thereof) molar ratio in Component (B) of the composition.