Aminoan thraquinone dyes having a quaternary center with a long

Details Aminoan thraquinone dyes having a quaternary center with a long Aminoan thraquinone dyes having a quaternary center with a long

1992-09-01

1994-05-24

Skaling, Linda

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8408, 8416, 132208, A61K 713

Patent

active

053145054

ABSTRACT:
Direct dyes having a quaternary center with a long aliphatic chain, compositions containing those dyes, and the process of using them to dye hair are disclosed. These dyes have a higher affinity for hair and are more shampoo stable than conventional direct dyes, and produce pleasing uniform dyeing.

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patent: 3531502 (1970-09-01), Kalopissis et al.
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patent: 3576587 (1971-04-01), Kalopissis et al.
patent: 3617163 (1971-11-01), Kalopissis et al.
patent: 3817698 (1974-06-01), Kalopissis et al.

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