THERMOSETTING RESIN COMPOSITIONS

摘要

The present invention relates to a thermosetting resin composition comprising (A) An unsaturated polyester resin comprising fumaric acid building blocks and/or a methacrylate functional resin, whereby the resin has a molecular weight Mn of from 450 up to and including10000 Dalton and the amount of such unsaturated polyester resin and methacrylate functional resin is from 30 up to and including80wt.%; (B) An ethylenically unsaturated compound copolymerizable with (A); present in an amount from 10 up to and including 60 wt.%; (C) A core-shell rubber in an amount from 0.1 up to 6 wt.%, whereby the core has a Tg of less than -30º C and the average particle diameter of the core-shell rubber is from 50 up to and including 1000 nm; and (D) An epoxy compound in an amount from 0.3 up to and including 10 wt.%; whereby the amounts are given relative to the total weight (in g) of the summed amount of (A), (B), (C) and (D).