Crystal modification of a diketopyrrolopyrrole pigment

Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...

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106493, 106494, 106499, 106506, 524 92, 524104, 548453, C07D48704

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active

058715754

ABSTRACT:
A diketopyrrolopyrrole of formula ##STR1## in its .beta.-modification. The novel .beta.-modification is also suitable as pigment for coloring high molecular weight organic materials. In comparison to the .alpha.-modification, it has a shade shifting towards blueish red, enhanced color strength and chroma as well as an enhanced resistance to heat.

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