申请人:Dominion Colour Corporation
公开号:US06706864B1
公开(公告)日:2004-03-16
Water-insoluble violet benzimidazolone monoazo pigments of the formula:
wherein R1, R2 and R3 each represent hydrogen, chlorine, bromine, methyl, methoxy, ethoxy, nitro or a group of the formula —COOR with R being hydrogen, methyl or ethyl, and R4 represents hydrogen, chlorine, bromine, methyl, methoxy, ethoxy or nitro group. Due to the presence of two 5-membered heterocyclic rings in the molecule, these pigments display very high thermoresistance and excellent fastness to migration.
公式为:其中R1、R2和R3分别表示氢、氯、溴、甲基、甲氧基、乙氧基、硝基或公式—COOR的基团,其中R为氢、甲基或乙基,R4表示氢、氯、溴、甲基、甲氧基、乙氧基或硝基基团。由于分子中存在两个5元杂环,这些颜料表现出非常高的热稳定性和优异的迁移牢度。