A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula (1) as a reaction medium which controls color reactions of the components (A) and (B).
wherein, R represents an alkyl group or an alkenyl group, having 4 or more carbon atoms.
一种热致变色显色组合物,它由以下物质的均匀溶解混合物组成:(A) 一种电子供体显色有机化合物;(B) 一种电子受体化合物;(C) 一种由具体式 (1) 表示的
酯类化合物,作为反应介质,可控制组分 (A) 和 (B) 的显色反应。
其中,R 代表具有 4 个或更多碳原子的烷基或烯基。