| abstract |
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 formulan 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. |