| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid writing material which exhibits excellent color-change properties or erasability, and excellent light-exposure properties, moldability, and strength.SOLUTION: A solid writing material is characterized by including: a writable inner core; and an outer shell which covers an outer peripheral surface of the inner core. The inner core includes: an excipient; and a reversible thermochromatic microcapsule pigment including a temperature-sensitive color-changeable color-memorizing composition which comprises at least (A) an electron-donating color-developing organic compound, (B) an electron-accepting compound, and (C) a reaction medium which reversibly induces, in a specific temperature range, an electron exchange reaction using components (A) and (B). The solid writing material is further characterized in that a filler is included in the outer shell. |
