Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1975-02-04
1976-08-31
Schofer, Joseph L.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 21C, 8 37, 8163, 8179, C09B 2700, D06P 102
Patent
active
039778274
ABSTRACT:
A process for dyeing acid-modified polyester fibers comprising contacting the fibers with a dye bath containing a thiazoleazo-type cationic dye of the formula (I), ##SPC1##
wherein R.sub.1 and R.sub.2 each is a methyl group or an ethyl group; A and B each is a benzene nucleus which can be substituted with a methyl group, an ethyl group, a methoxy group or an ethoxy group; and X.sup.- is an anion. The cationic dye compounds of the formula (I) dye acid-modified polyester fibers a bright blue shade and with good light fastness.
REFERENCES:
patent: 3504997 (1970-04-01), Clapham
patent: 3874847 (1975-04-01), Ohkawa et al.
Abeta Sadaharu
Ishii Koichi
Konishi Seizo
Okaniwa Tetuo
Clingman A. L.
Schofer Joseph L.
Sumitomo Chemical Company Limited
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