Isoindoline colorants

Details Isoindoline colorants Isoindoline colorants

1981-01-22

1982-07-20

Coughlan, Jr., Paul M.

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

Organic compounds

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

106 22, 106288Q, 544284, 544296, 524 83, 524 93, 524 94, C09B 5704

Patent

active

043407358

ABSTRACT:
Isoindoline colorants of the formula ##STR1## where R.sup.1 is the radical of a 5-membered or 6-membered heterocyclic unsaturated ring, which may or may not be fused to a benzo ring, X is ##STR2## R.sup.2 and R.sup.3 independently of one another are hydrogen, C.sub.1 -C.sub.4 -alkyl, benzyl, phenyl or 1-naphthyl, and R.sup.1, the phenyl and naphthyl radicals, and the ring A may or may not be substituted by groups which do not confer solubility.
In surface coatings, printing inks and plastics the novel colorants give yellow to red or brown very deep colorations which have good lightfastness, and fastness to weathering and to overspraying.

REFERENCES:
patent: 3794659 (1974-02-01), Leister et al.
patent: 4051099 (1977-09-01), Von der Crone
patent: 4262120 (1981-04-01), Von der Crone

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