Polycationic azo compounds for dyeing keratin fibers, dye...

Details Polycationic azo compounds for dyeing keratin fibers, dye... Polycationic azo compounds for dyeing keratin fibers, dye...

2007-10-16

2007-10-16

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S407000, C008S408000, C008S409000, C008S410000, C008S411000, C008S412000, C008S421000, C008S423000, C008S426000, C008S437000, C008S454000, C008S565000, C008S566000, C008S567000, C008S568000, C008S570000, C008S573000, C008S606000, C008S616000, C548S268800, C548S300100, C548S356100, C546S184000, C546S251000

Reexamination Certificate

active

11139626

ABSTRACT:
The present disclosure relates to compounds used as direct dyes, and dyeing compositions comprising such compounds. The disclosed compounds have the formula A-L-B, wherein A and B are chosen from arylazoimidazolium coloring functional groups, and L is a linker comprising at least one cationic group C. The disclosure also relates methods of using such compositions for coloring keratin fibers, such as the hair.

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