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1. (WO2018197809) THERMOCHROMIC PIGMENT COMPOSITIONS

Pub. No.:    WO/2018/197809    International Application No.:    PCT/FR2018/051033
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: C07C 69/612
C09D 11/16
Applicants: SOCIETE BIC
Inventors: DEBRAUWER, Christelle
DAMIANO, Anne-Lise
BOURQUE, Alexander
FOULONNEAU, François
CHOLLET, Guillaume
Title: THERMOCHROMIC PIGMENT COMPOSITIONS
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: R1 is H or a phenyl group, - R2 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.