Process for the preparation of diaryldiketopyrrolopyrrole pigmen

Details Process for the preparation of diaryldiketopyrrolopyrrole pigmen Process for the preparation of diaryldiketopyrrolopyrrole pigmen

1996-01-16

1996-10-15

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

106498, 106506, 106494, 106485, C08K 500, C07D48708

Patent

active

055655785

ABSTRACT:
A process for conditioning diaryldiketopyrrolo[3,4-c]pyrrole pigments (DPP) and for preparing solid solutions having a DPP component are disclosed. The inventive processes involve dissolving the DPP in aqueous, basic DMSO, alone, or in mixture with additional components in the case of a solid solution, and then precipitating the conditioned pigment or pigment solid solution by methods known in the art.

REFERENCES:
patent: 4415685 (1983-11-01), Iqbal et al.
patent: 4579949 (1986-04-01), Rochat et al.
patent: 4632704 (1986-12-01), B abler
patent: 4659775 (1987-04-01), Pfenninger et al.
patent: 4783540 (1988-11-01), B abler
patent: 4791204 (1988-12-01), Jost et al.
patent: 4810304 (1989-03-01), Jaffe et al.
patent: 5286863 (1994-02-01), B abler et al.
Derwent Abstract: 85-084119[14] (1985).
Derw. Abst. (1989)--302204/42 of EP 337,435.

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