Isoindoline pigments

Details Isoindoline pigments Isoindoline pigments

1976-09-20

1978-09-26

Coughlan, Jr., Paul M.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

260 4221, 544285, 544287, 260287K, 2603261, 544105, 548305, 544289, 544354, C09B 5700

Patent

active

041169590

ABSTRACT:
Isoindoline pigment of the formula ##STR1## wherein R denotes a heterocyclic aromatic radical, X.sub.1 -X.sub.4 denote hydrogen or halogen atoms or one or two of the radicals X.sub.1 -X.sub.4 denote nitro, alkyl, alkoxy or phenoxy groups and the others denote hydrogen atoms which are useful for pigmenting high molecular organic material.

REFERENCES:
patent: 3923806 (1975-12-01), Bock et al.
patent: 3979386 (1976-09-01), Crone et al.

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