Two new crystal modifications of a diketopyrrolopyrrole pigment

Details Two new crystal modifications of a diketopyrrolopyrrole pigment Two new crystal modifications of a diketopyrrolopyrrole pigment

1995-06-22

1997-07-08

Richter, Johann

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C01D48706

Patent

active

056462999

ABSTRACT:
Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification and in its .gamma.-modification. Both the .beta.-modification and the .gamma.-modification are suitable as pigments for coloring high-molecular weight organic material. In comparison to the .alpha.-modification, the .beta.-modification shows a shift in shade towards yellowish-red. The .gamma.-modification gives brilliant orange colorations.

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