Process for purifying crude isoindolinone series pigments

Details Process for purifying crude isoindolinone series pigments Process for purifying crude isoindolinone series pigments

1979-04-03

1980-09-16

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260325PH, C07D21361, C07D20950

Patent

active

042231523

ABSTRACT:
Isoindolinone pigments of an extremely high purity, which are represented by the following general formula: ##STR1## wherein R represents a carbocyclic bridge member such as:

REFERENCES:
patent: 3496190 (1970-02-01), von der Crone et al.
patent: 3758497 (1973-09-01), Pugin et al.
patent: 3816448 (1974-06-01), Bitterli et al.
patent: 3917641 (1975-11-01), Bitterli et al.

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