CPC C09D 11/50 (2013.01) [B43K 7/00 (2013.01); B43K 29/02 (2013.01); C07C 69/28 (2013.01); C09B 5/00 (2013.01); C09B 67/0033 (2013.01); C09D 11/17 (2013.01); C09K 9/02 (2013.01); C07C 2603/18 (2017.05); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01)] | 20 Claims |
1. Method of regulating temperature change in a thermochromic ink composition, comprising incorporating into the composition a compound represented by the following formula (I):
wherein R1 and R2, identical or different, represent a C2-C30 alkyl group, a C2-C30 alkenyl group, a C2-C30 alkynyl group, or a C2-C30 alkoxy group, wherein the groups are optionally substituted with at least one hydroxy, halogen, amino, C1-C8 alkyl, or C1-C8 alkoxy group.
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