3－羟基－2－萘甲酰歧化松香胺对 C.I. 颜料红57的性能改进

IMPROVEMENT ON PROPERTIES OF C I.PIGMENT RED 57 WITH THE 3 HYDROXY 2 NAPHTHOYL DISPROPORTIONATIVE ROSIN AMINE

Ｃ．Ｉ．颜料红５７系红色有机颜料主要品种，采用３－羟基－２－萘甲酰歧化松香胺共偶合，不变动原合成工艺，改性产品保持优良β－晶型，显蓝光，颜料颗粒显著变小，粒径分布变窄，着色力、透明度、鲜艳度明显提高。

C I pigment red 57 is the main variety of organic red pigments,An improved variety was prepared by co coupling with 3 hydroxy 2 naphthoy1 disproportionative rosin amine, following the conventional synthetic procedure of C.I.pigment red 57. It maintained the excellent β crystal form, showing blue light. The crystal size was obviously smaller than the controler, the range of the crystal size turned to narrow, the color strength、transparency and freshness were substantially improved.