Azo dye pigments containing 4-quinazolinone moieties

Details Azo dye pigments containing 4-quinazolinone moieties Azo dye pigments containing 4-quinazolinone moieties

1979-03-20

1981-04-07

Niebling, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260154, 260 37R, 260 37N, 260 37P, 260 37NP, C09K 1700, C09B 2922, C09B 2936, C09B 6208

Patent

active

042605407

ABSTRACT:
Heterocyclic compounds of the formula ##STR1## wherein R.sub.1 denotes hydrogen or C.sub.1 -C.sub.4 -alkyl or the two R.sub.1 s together denote CO,

REFERENCES:
patent: 1032734 (1912-07-01), Bogert
patent: 3382228 (1968-05-01), Ferrari et al.
patent: 3923774 (1975-12-01), Dimroth

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