| 摘要 |
PURPOSE:To ensure considerably improved impact resilience for a printing plate for printing corrugated fiberboard obtd. by curing a liq. photosensitive resin compsn. and to produce a high paper dust releasing effect when the printing plate is used for printing corrugated fiberboard. CONSTITUTION:In a photosensitive compsn. consisting of an unsatd. polyurethane prepolymer (A) as polyether polyol, an ethylenically unsatd. compd. (B) and a photopolymn. initiator (C), an acrylate monomer represented by the formula CH2=CH-CO-O-(C2H4O)n-R1 (where 1<=n<=20 and R1 is alkyl) is contained as the component B. Thus, the objective liq. photosensitive resin compsn. is obtd. |
