| abstract |
The invention provides a thermochromic color memory composition and a thermochromic color memory microcapsule pigment containing the same, which can effectively express the characteristics of the memory and maintain color, and in various forms. The field has applicability.nA thermochromic color memory composition and a thermochromic color memory microcapsule pigment contained therein, the composition comprising the following: (a) an electron-donating color organic compound a constituent component; (b) a component composed of an electron-accepting compound; and (c) a reaction comprising the ester compound represented by the following formula (1) for controlling the color reaction of the above (a) and (b) medium;n□ (wherein R represents any of an alkyl group having 4 to 22 carbon atoms, a cycloalkylalkyl group having 5 to 12 carbon atoms, a cycloalkyl group having 4 to 8 carbon atoms, and an alkenyl group having 4 to 22 carbon atoms; X represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom, and n represents 0 or 1). |