C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 57/00 (2006.01) C07D 487/04 (2006.01) C08K 5/3415 (2006.01) C09K 11/06 (2006.01) G03G 9/09 (2006.01) G03G 9/097 (2006.01)
Patent
CA 2152745
Diketopyrrolopyrrole of the formula Image (I) in its .beta.-modification. The new .beta.-modification is likewise suitable as a pigment for colouring high-molecular weight organic material and, in comparison to the a-modification, shows a shift in shade towards yellowish-red.
Hao Zhimin
Iqbal Abul
Schloder Ingo
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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