C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 48/00 (2006.01) C08J 3/20 (2006.01) C09B 57/00 (2006.01) C09B 67/22 (2006.01)
Patent
CA 2174062
Heat-stable, red pigment compositions comprising a physical mixture of 1,4-diketo-3,6-di(4- biphenylyl)-pyrrolo [3,4 c]-pyrrole and a 2,9-dichloroquinacridone pigments, processes for preparing the pigment compositions and the use of the compositions for pigmenting high- molecular-weight organic materials are disclosed.
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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