Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1977-08-24
1979-08-28
Thomas, Jr., James O.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 10, 8 41R, 8 46, 8 47, A61K 713
Patent
active
041659678
ABSTRACT:
Described is a process for dyeing keratin-containing material with developing dyes by applying diazo salts and coupling components successively, in any desired sequence, to the material to be dyed, and coupling them with each other, characterized in that there are used as coupling components specific derivatives of hydroxypyridine or pyridone.
REFERENCES:
patent: 3231471 (1966-01-01), Lange
patent: 3582253 (1971-06-01), Berth et al.
patent: 3955918 (1976-05-01), Lang
patent: 4025301 (1977-05-09), Lang
patent: 4065254 (1977-12-01), Buhler et al.
Buhler Arthur
Fasciati Alfred
Hungerbuhler Walter
Clarke Vera C.
Henkel Kommanditgesellschaft auf Aktien
Thomas, Jr. James O.
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