[Problems]
The present invention provides a highly marketable reversibly color changeable composition which provides a vivid yellow to orange color during color development, turns colorless during decoloration, and improves light resistance and a reversibly thermochromic microcapsule pigment encapsulating the same.
[Solution]
Disclosed are a reversibly thermochromic composition including: (a) a specific pyridine derivative as an electron-donating color-developing organic compound; (b) an electron-accepting compound; and (c) a reaction medium which reversibly induces an electron transfer reaction between the component (a) and the component (b) in a specific temperature range, and a reversibly thermochromic microcapsule pigment encapsulating the same.
问题
本发明提供了一种高度市场化的可逆变色组合物,该组合物在显色过程中提供鲜艳的黄色至橙色,在脱色过程中变成无色,并提高了耐光性,还提供了封装该组合物的可逆热变色微胶囊
颜料。
[解决方案]
本发明公开了一种可逆热致变色组合物,包括:(a)作为电子捐赠显色有机化合物的特定
吡啶衍生物;(b)电子接受化合物;和(c)在特定温度范围内可逆地诱导组分(a)和组分(b)之间发生电子转移反应的反应介质,以及封装该组合物的可逆热致变色微胶囊
颜料。