Bisazo, bisazomethine and azo-azomethine compounds derived from

Details Bisazo, bisazomethine and azo-azomethine compounds derived from Bisazo, bisazomethine and azo-azomethine compounds derived from

1993-09-22

1995-03-07

Higel, Floyd D.

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

Organic compounds

Azo

106496, 534759, 544276, 544299, C09B 3114, C09B 5500, D06P 506, C08K 500

Patent

active

053959264

ABSTRACT:
Compounds of formula ##STR1## wherein R is hydrogen or a group ##STR2## M.sub.1 and M.sub.2 are each independently of the other an alkali metal or alkaline earth metal or aluminum or a group of formula ##STR3## wherein n is 1, 2 or 3, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen or C.sub.1 -C.sub.8 alkyl,

REFERENCES:
patent: 2216446 (1940-10-01), McNally et al.
patent: 2218231 (1940-10-01), Dickey et al.
patent: 2692263 (1954-10-01), Taube
patent: 2746951 (1956-05-01), Taube
patent: 3619112 (1971-11-01), Berrie et al.
patent: 3959250 (1976-05-01), Heinrich et al.

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