申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0633296A1
公开(公告)日:1995-01-11
Dyestuffs represented by the below-described formula (1), that is, dyestuffs formed of a chromophoric nucleus and a bisphenol introduced therein have excellent solubility in solvents and binder resins, and can provide color filters having excellent transmittance characteristics and durability.
wherein Dye represents a chromophoric nucleus, X represents a direct bond or a divalent connecting group, R¹ to R⁸ independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group or a substituted or unsubstituted alkoxyl group, R⁹ and R¹⁰ independently represent a hydrogen atom or a substituted or unsubstituted alkyl group, and n stands for an integer of 1 to 10, with the proviso that the total carbon number of R⁹ and R¹⁰ is at least 3.
以下述式(1)为代表的染料,即由发色核和引入其中的双酚形成的染料,在溶剂和粘合剂树脂中具有优异的溶解性,可提供具有优异透射特性和耐久性的滤色片。
其中,染料代表发色核,X 代表直接键或二价连接基团,R¹ 至 R⁸ 各自代表氢原子、卤素原子、取代或未取代的烷基、取代或未取代的环烷基或取代或未取代的烷氧基、R⁹ 和 R¹⁰ 独立地代表氢原子或取代或未取代的烷基,且 n 代表 1 至 10 的整数,但 R⁹ 和 R¹⁰ 的总碳数至少为 3。