| 摘要 |
PURPOSE:To reduce the amt. of hydrogen generated and to improve curability by incorporating urethane (meth)acrylate, a specified reactive diluent and a specified compd. CONSTITUTION:20-70wt.% urethane (meth)acrylate (A) having 500-7,000 average mol. wt. obtd. by allowing polyol to react with polyisocyanate and monohydroxyalkyl (meth)acrylate in 0.8-1.20 equiv. ratio of NCO groups to OH groups is mixed with 30-80wt.% compd. (P) which is liq. at ordinary temp. and contains one or more unsatd. double bonds in one molecule, e.g., acrylate of an adduct of tetrabydrofurfuryl alcohol to caprolactone as a reactive diluent and 0.01-10wt.% compd. (C) represented by the formula. |
