Umkehrbare thermochromische Zusammensetzung mit verbesserter Lichtechtheit und diese enthaltendes Erzeugnis

摘要

A reversible thermochromic composition which can be freely adjusted in its discoloration temperature even if the kind of electron donating compound and electron accepting compound to be used in combination remain the same and exhibits a remarkably improved light-fastness during quenching. A reversible thermochromic composition having an improved light-fastness comprising (a) an electron donating compound, (b) an electron accepting compound ultraviolet absorbing capacity represented by the following general formula I: wherein X represents a hydrogen atom, -CnH2n+1 or -OCmH2m+1; m represents an integer of from 1 to 9; n represents an integer of from 1 to 10; and p represents an integer of from 1 to 3, and (c) a discoloration temperature adjustor and a product comprising same.