| abstract |
The present invention relates to a thermochromic pigment composition comprising: (A) at least one electron-donor organic dye compound, (B) at least one electron-acceptor compound, and (C) at least one compound corresponding to the following formula (I), in which: R 1 is H or a phenyl group, - R 2 is H or a phenyl group, and - n = 1-8. The present invention also relates to thermochromic pigment microcaspules comprising compositions according to the invention, to ink compositions comprising such thermochromic pigment microcapsules, and finally to writing instruments comprising such ink compositions. |