Core-shell polymer and unsaturated polyester resin...

Details Core-shell polymer and unsaturated polyester resin... Core-shell polymer and unsaturated polyester resin...

C - Chemistry, Metallurgy

08

L

C08L 25/02 (2006.01) C08F 257/02 (2006.01) C08K 5/00 (2006.01) C08K 5/523 (2006.01) C08L 33/12 (2006.01) C08L 67/06 (2006.01)

Patent

CA 2090272

Abstract of the Disclosure An unsaturated polyester resin composition for the production of cured molded article which comprises: an unsaturated polyester resin; and a core-shell polymer as a low shrinking agent which comprises: (a) a cross-linked core layer polymerized from a first monomer comprising an aromatic vinyl monomer in an amount of not less 50% by weight, the core layer being contained in the core-shell polymer in an amount of 50-90% by weight; and (b) a shell layer polymerized from a monomer comprising methyl methacrylate in an amount of not less 50% by weight; and the core-shell polymer having a refractive index in the range of 1.52-1.58 and within ? 0.02 from the refractive index of the cured material of the unsaturated polyester resin.

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