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Title:
NEW CRYSTAL MODIFICATION OF DIKETOPYRROLPYRROLE SOLID SOLUTION PIGMENT
Document Type and Number:
WIPO Patent Application WO2002092699
Kind Code:
A3
Abstract:
The present invention relates to the host-guest solid solutions formed from a mixture of 1,4-diketo-3,6-bis(4-chlorophenyl)pyrrolo[3,4-c]pyrrole (para-dichloro DPP) and 1,4-diketo-3,6-bis(4-methylphenyl)pyrrolo[3,4-c]pyrrole (para-dimethyl DPP). The mixture contains between 30-80 mol percent of para-dimethyl DPP and 70-20 mol percent of para-dichloro DPP. The present invention further relates to the preparation of the solid solutions, and to the use of the solid solutions and binary solid compounds as pigments.

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Inventors:
HAO ZHIMIN (CH)
HENDI SHIVAKUMAR BASALINGAPPA (US)
Application Number:
PCT/EP2002/005036
Publication Date:
December 18, 2003
Filing Date:
May 07, 2002
Export Citation:
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Assignee:
CIBA SC HOLDING AG (CH)
HAO ZHIMIN (CH)
HENDI SHIVAKUMAR BASALINGAPPA (US)
International Classes:
C09B57/00; C09B67/04; C09B67/22; C09D7/12; C09D201/00; (IPC1-7): C09B67/22; C09B67/48; C08K5/3415; C09D5/00
Foreign References:
EP0256983A11988-02-24
EP0765919A21997-04-02
EP0704497A11996-04-03
EP0962499A21999-12-08
EP0764696A21997-03-26
EP0794235A11997-09-10
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