Process for the preparation of perylene-3,4,9,10-tetracarboxydii

Details Process for the preparation of perylene-3,4,9,10-tetracarboxydii Process for the preparation of perylene-3,4,9,10-tetracarboxydii

1991-02-28

1992-09-08

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D47106

Patent

active

051459647

ABSTRACT:
Brilliant and easily dispersible perylene-3,4,9,10-tetracarboxydiimide pigments of high color strength and N-alkyl derivatives thereof having 1 to 4 carbon atoms per alkyl group can be prepared by subjecting finely divided crude pigments to a treatment by means of a mixture of water and an organic solvent from the class of alcohols, ketones, carboxylic acids or carboxylic esters.

REFERENCES:
patent: 4230858 (1980-10-01), Gall et al.
patent: 4262851 (1981-04-01), Graser et al.
patent: 4286094 (1981-08-01), Hoch et al.
patent: 4404386 (1983-09-01), Babler
patent: 4431806 (1984-07-01), Spietschka et al.
patent: 4496731 (1985-01-01), Spietschka et al.
patent: 4655845 (1987-04-01), Spietschka et al.

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