申请人:Yamamoto Chemicals, Inc.
公开号:EP0134518A1
公开(公告)日:1985-03-20
@ Naphthalocyanine compounds represented by the general formula
wherein R1, R2, R3 and R4, which may be the same or different, are each a straight chain or branched chain alkyl group of 5 to 12 carbon atoms and M is a metal selected from the group consisting of Cu, Ni, Mg, Pb, Pd, V, Co, Nb, Al, Sn, In, Fe, and Ge, or its oxide, chloride or bromide, are bluish green or green crystals and are superior in absorption of near infrared rays of 750 to 850 nm, highly resistant to light, heat, acids and alkalis, soluble in organic acids, liquid crystals and resins, and accordingly are very useful as a dyestuff capable of absorbing near infrared rays.
通式如下的萘酞菁化合物
其中 R1、R2、R3 和 R4(可以相同或不同)各为 5 至 12 个碳原子的直链或支链烷基,M 为选自 Cu、Ni、Mg、Pb、Pd、V、Co、Nb、Al、Sn、In、Fe 和 Ge 组成的金属或其氧化物、氯化物或溴化物、它们是蓝绿色或绿色晶体,对 750 至 850 纳米的近红外线有极好的吸收能力,耐光、耐热、耐酸和耐碱性强,可溶于有机酸、液晶和树脂,因此作为能够吸收近红外线的染料非常有用。