stabilized unsaturated polyester resin mixtures

摘要

Unsaturated hardenable polymer resin mixture (I) under external pressure comprises unsaturated polyester resin with average molecular weight of 500-5000 g/mol; an ethylenic unsaturated monomer; shrink-reduced component; inert filler; strengthening fiber; and a block copolymer (0.01-1 wt.%), which is a mixture of A-block (polymerized amine containing ethylenic unsaturated monomer) and B-block (polymerized alkyl- and/or phenyl group containing ethylenic unsaturated monomer) and free of polymerized amine containing ethylenic unsaturated monomers. An independent claim is included for the preparation of (I).