Crystal growth modifiers for perylene pigments
This invention relates to pigment compositions prepared by precipitating a blend of (a) about 60 to about 95 percent by weight of a perylene pigment having the 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 perce...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
19.05.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to pigment compositions prepared by precipitating a blend of (a) about 60 to about 95 percent by weight of a perylene pigment having the 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 containg at least 5 aromatic rings wherein at least one ring is substituted with at least one keto group.\! |
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Bibliography: | Application Number: US19960645368 |