Temperature-discolorable color memory composition and thermochromic color-changing color memory microcapsule pigment containing the same

摘要

To provide a thermochromic color-changing color-memory composition which effectively expresses characteristics capable of storing and retaining colors interchangeably and has applicability in various fields and a thermochromic color-changing color memory micro Capsule pigment.A coloring reaction between a component (a) comprising an electron-donating coloring organic compound, a component (b) comprising an electron-accepting compound, and the component (a) and the component (b) And a component (c) comprising an ester compound represented by the following formula (1) as a reaction medium to be reacted, and a thermochromic coloring color-memorizing microcapsule pigment encapsulating the thermochromic coloring memory composition. (Wherein R represents any one of an alkyl group having 3 to 18 carbon atoms and an aliphatic acyl group having 3 to 18 carbon atoms, X represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an alkyl group having 1 or 2 carbon atoms An alkoxy group having 1 to 4 carbon atoms or a halogen atom; Y represents a hydrogen atom or a methyl group; Z represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 or 2 carbon atoms, a halogen atom Either one of them.