| 摘要 |
A curable resin composition including a homogeneous mixture or blend of: (a) an epoxy vinyl ester resin, and (b) a urethane vinyl ester resin having a weight average molecular weight of greater than 8000 and forming a dispersed second phase in the epoxy vinyl ester resin upon curing of the curable resin composition prepared by reacting: (i) an alkylene bis(phenyl isocyanate) compound; (ii) a plurality of polyalkylene glycols having at least a bimodal distribution of molecular weights, wherein a short-chain molecular weight peak is centered at no more than 1,000 and a long-chain molecular weight peak is centered at no less than 1,200 and, optionally, a branched polyalkylene polyol with a hydroxy functionality of greater than 2 and an average molecular weight of from 450 to 4600; and (iii) a hydroxyalkyl acrylate or hydroxyalkyl methacrylate. |
