Crystal growth modifiers for perylene pigments

Details Crystal growth modifiers for perylene pigments Crystal growth modifiers for perylene pigments

C - Chemistry, Metallurgy

09

B

C09B 5/62 (2006.01) C09B 48/00 (2006.01) C09B 67/14 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2203619

This invention relates to pigment compositions prepared by co-precipitating a blend of (a) about 60 to about 95 percent by weight of a perylene pigment having the formula (see above formula) wherein R1 and R2 are independently C1-C6 alkyl, C5-C7 cycloalkyl, C7-C16 aralkyl, or C6-C10 aryl; and (b) about 5 to about 40 percent by weight of a polycyclic aromatic compound.

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