发明授权
US4052378A Red pigment obtained by coupling diazotized 4-aminonaphthalimide with 2,6-dihydroxy-3-cyano-4-methylpyridine 失效
通过与2,6-二羟基-3-氰基-4-甲基吡啶偶联的二氨基苯胺二酰亚胺获得的红色颜料

Red pigment obtained by coupling diazotized 4-aminonaphthalimide with
2,6-dihydroxy-3-cyano-4-methylpyridine
摘要:
The azo dye of the formula ##STR1## is a brilliantly red pigment which imparts lightfast and migration resistant color to printing inks, plastics, and the like.
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