Process for preparing cationic hydrazone dyestuffs

Details Process for preparing cationic hydrazone dyestuffs Process for preparing cationic hydrazone dyestuffs

1986-12-16

1988-07-26

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534589, 548505, C09B 5700, C09B 4300, C09B 4600, D06P 376

Patent

active

047601329

ABSTRACT:
Cationic hydrazone dyestuffs of the general formula ##STR1## in which R.sub.1 stands for hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, nitro or halogen,

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patent: 4344879 (1982-08-01), Mohr et al.
patent: 4372886 (1983-02-01), Zink et al.
patent: 4376728 (1983-03-01), Raue et al.

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