| 摘要 |
PURPOSE:To obtain the titled molding which can sensitively react to a change in temperature and reversibly changes its color, by adding specified thermochro mic particles to a vinyl chloride plastisol containing a stabilizer, a lubricant and a filler and molding the resulting mixture. CONSTITUTION:A thermochromic polyvinyl chloride molding is produced by adding thermochromic particles (A) prepared by further surface-coating particles obtained by encapsulating the three components of an electron-donating coloring pigment, an electron-accepting substance and a solvent with a nonthermoplastic resin with a hydrophilic polymeric compound to a vinyl chloride plastisol (B) comprising a vinyl chloride resin, a plasticizer, a stabilizer, a lubricant and a filler and molding the resulting mixture. Examples of the electron-donating coloring pigments used include 3,3'-dimethoxyfluoran (yellow) and 3- diethylamino-6-methyl-7-chlorofluoran (vermilion). Examples of the electron- accepting substances include phenols, metal or ammonium salts thereof and benzotriazoles and metal or ammonium salts thereof.
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