Impact-resistant graft copolymer and thermoplastic resin...

Details Impact-resistant graft copolymer and thermoplastic resin... Impact-resistant graft copolymer and thermoplastic resin...

C - Chemistry, Metallurgy

08

F

C08F 279/00 (2006.01) C08F 257/00 (2006.01) C08F 279/02 (2006.01) C08L 27/06 (2006.01) C08L 33/20 (2006.01) C08L 51/04 (2006.01)

Patent

CA 2056080

A graft copolymer is formed by graft- polymerizing 10 - 95 wt. parts of a vinyl monomer onto 5 - 90 wt. parts of the rubber polymer which comprises 40 - 99 wt. % of butadiene and 1 - 60 wt. % of an aromatic polycyclic vinyl monomer represented by the following formula (I) or (II): Formula (I) Formula (II) Image Image , or wherein R denotes a hydrogen atom or a methyl group. The graft copolymer is characterized by the rubber polymer having a high refractive index as well as a low glass transition temperature due to the use of the aromatic polycyclic vinyl monomer. Accordingly, the graft copolymer per se may be used as a thermoplastic resin having good transparency and impact resistance at a low rubber polymer content and may also be added to a transparent thermoplastic resin inclusive of a vinyl chloride resin and a styrene-acrylonitrile copolymer resin to provide the thermoplastic resin with an improved impact resistance while retaining a good transparency.

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