申请人:Fujita Takuya
公开号:US10703911B2
公开(公告)日:2020-07-07
Organic colorant represented by General Formula (1) below:
where in the General Formula (1), R1 and R2 each independently represent C1-C20 alkyl group, C1-C20 alkenyl group, phenyl group, naphthyl group, or group represented by —(CH2)n—COO—R3, —(CH2)n—R4, —(CH2)n—CONH—R5, —CR6R7—COO—R8, or —(CH2)n—OCOCH3; R3 represents hydrogen atom or C1-C2 alkyl group; R4 represents hydroxy group, C1-C2 alkoxy group, C2-C5 alkenyloxy group, SO3Na group, OSO3Na group, phenyl group, phenylalkyl group, naphthyl group, or naphthylalkyl group; R5 represents C1-C20 alkyl group, C1-C20 alkenyl group, or C1-C12 hydroxyalkyl group; R6 represents hydrogen atom or methyl group; R7 represents C1-C4 alkyl group; R8 represents C1-C5 alkyl group; and n is integer of from 1 to 12.
由下式(1)表示的有机着色剂:
其中通式(1)中,R1 和 R2 各自独立地代表 C1-C20 烷基、C1-C20 烯基、苯基、萘基或由-(CH2)n-COO-R3、-(CH2)n-R4、-(CH2)n-CONH-R5、-CR6R7-COO-R8 或-(CH2)n-OCOCH3 所代表的基团;R3 代表氢原子或 C1-C2 烷基;R4 代表羟基、C1-C2 烷氧基、C2-C5 烯氧基、SO3Na 基、OSO3Na 基、苯基、苯基烷基、萘基或萘基烷基;R5 代表 C1-C20 烷基、C1-C20 烯基或 C1-C12 羟基烷基;R6 代表氢原子或甲基;R7 代表 C1-C4 烷基;R8 代表 C1-C5 烷基;n 为 1 至 12 的整数。