The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II):
wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.
本发明涉及一种热致变色颜色记忆组合物,该组合物由(I)一种电子供体着色有机化合物、(II)一种电子受体化合物和(III)一种由下式(1)表示的
酯类化合物的增溶混合物组成,作为反应介质,可控制组分(I)和(II)的颜色反应:
其中 R 代表具有 1 至 21 个碳原子的烷基或具有 1 至 21 个碳原子的烯基,n 代表 1 至 3 的整数。