Composition for dyeing human hair

Details Composition for dyeing human hair Composition for dyeing human hair

2007-09-04

2007-09-04

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

C008S435000, C008S455000, C008S463000, C008S585000

Reexamination Certificate

active

11470378

ABSTRACT:
This invention relates to a hair dyeing composition showing excellent dyeing ability comprising at least one direct acting hair dye and benzylurea and/or benzyl carbamate and/or N-(2-methoxybenzyl)urea. The direct acting hair dyes are preferably selected from anionic, acidic dyestuffs. In addition to benzylurea and/or benzyl carbamate and/or N-(2-methoxybenzyl)urea compositions further comprise organic solvents as penetration enhancers. Compositions according to the invention has a pH in the range from 1 to 5 and preferably comprises polymeric thickening agents, organic and/or inorganic acids and conditioning agents.

REFERENCES:
patent: 2501184 (1950-03-01), Michael
patent: 4182612 (1980-01-01), Sokol et al.
patent: 5601620 (1997-02-01), Ishikawa
patent: 7135045 (2006-11-01), Carrascal et al.
patent: 1 022 014 (2000-07-01), None
patent: 762 985 (1934-04-01), None
D. F. Williams; “Chemistry and Technology of the Cosmetics and Toiletries Industry”; 1992, Blackie Academic & Professional; XP002251416; pp. 92-93.

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