Core-shell polymer, resin composition and molded articles thereof

摘要

There is disclosed a core-shell polymer which comprises:(a) a core comprising an elastomeric polymer having a glass transition temperature of not more than -30°C in an amount of 50-90 % by weight;(b) an intermediate layer comprising a polymer having a glass transition temperature of not less than 60°C in an amount of 5-30 % by weight; and(c) a shell comprising an aromatic vinyl polymer in an amount of 5-30 % by weight,each based on the core-shell polymer, and the total of the core, the intermediate layer and the shell amounting to 100 % by weight.;Preferably, the core is composed of polybutadiene or polyalkyl acrylate wherein the alkyl has 2-8 carbon atoms, the intermediate layer of polymethyl methacrylate and the shell of polystyrene.;A high impact polyphenylene ether resin composition is further disclosed which contains such a core-shell polymer as an impact modifier.