| 摘要 |
<p>UV-curable inks for printing are provided which shrink little during curing, and exhibit good adhesion, conformability, aging-crack resistance, elasticity, elongation, tenacity, chemical resistance, and scratch resistance, and which comprise a UV-curing rubbery copolymer having the general formula <CHEM> wherein R represents a C2-8 alkylene group, R1 represents H or CH3, R2 represents a diisocyanate residue, R3 represents a residue of polyhydric alcohol, X is a moiety of dienic liquid rubber having one or more reactive hydroxyl groups, l is an integer from 1-4, m is a number from 1.0<m<3.0, and n is an integer from 1-12.</p> |
