| abstract |
The present invention provides a heat-resistant printing ink that does not cause defective printing during insert molding at high temperatures even when it is contaminated with fingerprint grease stains or hand cream, and a binder resin for ink used therefor. A binder resin for ink, wherein the content of the structural unit represented by the formula (1) is 20 to 70 mol% with respect to all the structural units constituting the polycarbonate resin. Printing ink contained in resin. (R1 to R4 are each independently H, a substituted / unsubstituted C1-9 alkyl group, a C6-12 aryl group, a C1-5 alkoxy group, a C2-5 alkenyl group, or a C7-17 aralkyl group. ) [Selection figure] None |