Invention Grant
US07695558B2 Diketopyrrolopyrrole pigments having heightened fastnesses and processes for preparing them 有权
具有提高坚牢度的二酮吡咯并吡咯颜料及其制备方法

Diketopyrrolopyrrole pigments having heightened fastnesses and processes for preparing them
Abstract:
The invention relates to a diketopyrrolopyrrole pigment of formula (I) in which R10, R11, R12 and R13 independently of one another denote hydrogen, halogen, C1-C4-alkyl, C1-C4-alkoxy, cyano or phenyl, characterized by a first maximum of the frequency distribution (according to weight fractions) of the crystal sizes at or below 700 nm and at least one further maximum of the frequency distribution (according to weight fractions) of the crystal sizes which is at least 100 nm above the first maximum.
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