AZO dyes containing a bridge member based on stibene and morphol

Details AZO dyes containing a bridge member based on stibene and morphol AZO dyes containing a bridge member based on stibene and morphol

1995-06-02

1996-09-10

Powers, Fiona T.

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

Organic compounds

Azo

534631, C09B 5604

Patent

active

055547346

ABSTRACT:
Azo dyes of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 alkyl,

REFERENCES:
patent: 2459435 (1949-01-01), Keller et al.
patent: 4997919 (1991-03-01), Schaulin
patent: 5320648 (1994-06-01), McMullan et al.
patent: 5324330 (1994-06-01), Schaulin et al.
patent: 5328995 (1994-07-01), Schaulin et al.
Fujita et al., Chemical Abstracts, 56:4905h (1962).

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