| 摘要 |
<p>An ethylenically unsaturated polymer, especially a polyester, poly(vinyl ester) or acrylate terminated polyurethane, admixed with a cross-linkable monomer, is curable with a catalyst composition for curing such free radical curable resin compositions, the catalyst composition comprising, when free from the free radical curable resin: (1) a free radical catalyst and (2) a liquid saturated polyester (a) comprising units derived from (i) a C3-12 polycarboxylic acid or reactive derivative thereof; and (ii) a C2-12 polyol or reactive derivative thereof; and (b) having a weight average molecular weight of from 500 to 20,000. The compositions may be used, for example, in fibre reinforced plastics moulding and as adhesives and gap fillers. They are especially suitable for application from a two-pack kit, such as a two-cylinder applicator, in which the catalyst composition is present in one pack and the resin composition, preferably containing an accelerator, is present in the other pack.</p> |
