Cationic diazacyanine dyestuffs

Details Cationic diazacyanine dyestuffs Cationic diazacyanine dyestuffs

1973-10-05

1977-02-01

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260146D, 260147, 260154, 260155, 260156, 260157, 260158, 260160, 260162, 260163, C09B 4300

Patent

active

040061272

ABSTRACT:
Dyestuffs of the formula ##STR1## WHEREIN A denotes a ring which contains at least one quaternary nitrogen atom;

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