Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1991-01-25
1992-01-21
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8405, 8406, 8412, 8414, 8415, 8416, 546255, 546258, 564441, A61K 713, C07D21304, C07D21322, C07C32100
Patent
active
050824678
ABSTRACT:
A dye composition for keratinous fibers is disclosed. The composition comprises a developing substance and, as a coupling substance, a 3,5-diaminopyridine derivative of the following formula (I), ##STR1## wherein R.sup.1 is an alkoxy group or a group ##STR2## wherein R.sup.2 and R.sup.3 may be the same or different and individually represents a hydrogen atom or a hydroxyalkyl group, R.sup.4 a hydroxy, alkoxy, or hydroxyalkyl group, and n is a number of 1-4; or a salt thereof. The composition is capable of dyeing keratinous fibers such as hairs in blue color with a high vividness and with resistances to the light, color change, and discoloration due to shampooing.
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Kawase Jiro
Kiyomine Akira
Muraoka Tsutomu
Nishizawa Yoshinori
Ogawa Masahiko
Kao Corporation
Lieberman Paul
Parks William S.
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