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

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

1986-07-08

1989-01-10

Daus, Donald G.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

546 37, C09B 6720, C07D47106

Patent

active

047971622

ABSTRACT:
A process for the preparation of perylene-3,4,9,10-tetracarboxylic acid N,N'-dimethylimide in a high-hiding pigmentary form and a pure red shade, in which a finely divided, dry perylene-3,4,9,10-tetracarboxylic acid, N,N'-dimethylimide prepigment which is prepared in a conventional manner and has a crystallite size of <400 .ANG. is treated with an organic solvent which is liquid in the treatment temperature range stated below and is selected from the series comprising saturated aliphatic brominated or chlorinated hydrocarbons, aromatic hydrocarbons and aromatic brominated or chlorinated hydrocarbons, in a mill or a disperser at temperatures from 0.degree. C. to 100.degree. C., the organic solvent is then distilled off and the perylene-3,4,9,10-tetracarboxylic acid N,N'-dimethylimide pigment is isolated.

REFERENCES:
patent: 3615800 (1971-10-01), Spietschka et al.
patent: 3976649 (1976-08-01), Fabian et al.
patent: 4018791 (1977-04-01), Spietschka et al.
patent: 4189582 (1980-02-01), Hoch et al.
patent: 4496731 (1985-01-01), Spietschka et al.
Herbst, Willy: Industrielle Organische Pigmente: Herstellung, Eigenschaften, Anwendung/Willy Herbst; Klaus Hunger-Weinheim: VCH, 1987.

Affiliated with

Also associated with

Rating

Process for the preparation of perylene-3,4,9,10-tetracarboxylic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of perylene-3,4,9,10-tetracarboxylic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of perylene-3,4,9,10-tetracarboxylic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2106362