Method of coloring porous material

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

Reexamination Certificate

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Details

C008S437000, C008S451000, C008S466000, C008S565000, C008S566000, C008S567000, C008S575000, C008S607000, C008S666000, C008S688000, C544S180000, C544S224000

Reexamination Certificate

active

10525469

ABSTRACT:
A method of coloring porous material, especially human hair, is described, which method comprises applying to the material being colored, in any desired order successively, or simultaneously, a) at least one capped diazonium compound and b) at least one cationic water-soluble aromatic coupling component, under conditions such that, initially, coupling does not take place, and then causing the capped diazonium compound present on the material to react with the coupling component.

REFERENCES:
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patent: 6358286 (2002-03-01), Lang et al.
patent: 6419711 (2002-07-01), Genet et al.
patent: 2004/0083560 (2004-05-01), Adam et al.
patent: 30 09 833 (1981-10-01), None
patent: 2776289 (1999-09-01), None
patent: 2 794 644 (2000-12-01), None
patent: 02/39967 (2002-05-01), None
patent: 02/39968 (2002-05-01), None
patent: 02/39969 (2002-05-01), None
patent: 02/39970 (2002-05-01), None
STIC Search REport filed on Sep. 20, 2006.

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