| 摘要 |
Radiation-curable compsn. comprises (A) a cpd. with at least 2 terminal ethylenically unsatd. gps., capable of forming a crosslinked polymer by radical initiated addn. chain polymerisation, (B) a polymeric binder with lateral cross linking gps. of formula -CH2ORin which R=H, lower alkyl, acyl or hydroxyalkyl gp., and (C) a radiation-activated polymerisation initiator. - Pref. the binder comprises a copolymer contg. units of formula (I) in which R' is H or Me. Copolymer pref. also contains units with lateral carboxyl gps. A pref. copolymer comprises 10-35 wt.% (meth)acrylic acid, 15-60 wt.% (meth)acrylamide, N-substd. by -CH2OR and 25-75 wt.% of an alkyl (meth)acrylate with 4-12C in the alkyl gp.
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