POLYPHENYLENE ETHER COMPOSITIONS

专利名称：POLYPHENYLENE ETHER COMPOSITIONS发明人：GIM FUN LEE, JR.,JAMES GORDY BENNET, JR.申请号：AU5938873申请日：19730820公开号：AU5938873A公开日：19750220

摘要：1422208 Polyphenylene ether-rubber modified polystyrene compositionsGENERAL ELECTRIC CO 21 Aug 1973 [23 Aug 1972] 39397/73 Headings C3G C3P and C3RThermoplastic compositions -having high impact strength comprise (1) a polyphenyleneether resin and (2) a -rubber modified polystyrene resin comprising a polystyrene matrixin which is uniformly dispersed a discontinuous phase comprising particles of styrenehomopolymer or a mixture of styrene polymers englobulated in diene rubbermembranes, the particles having an average size of 0À1 to 0À7 micron, the membranethickness being not greater than a quarter of the average particle diameter and thediene rubber content being 1 to 10% by weight of the rubber modified polystyrene. The-phenylene nuclei in the polyether may contain halogen, hydrocarbon, halohydrocarbon,hydrocarbonoxy or halohydrocarbonoxy substituents, and the polyether may have adegree of polymerization of at least 50. The modified polystyrene may be prepared bybulk prepolymerizing a solution of a natural or synthetic diene rubber, particularlypolybutadiene or a butadiene/styrene copolymer, in styrene or an alkyl- or halostyreneto phase inversion and continuing the polymerization in aqueous suspension. In examplesa -solution of polybutadiene or styrene/butadine copolymer rubber in styrene is bulkprepolymerized in the presence of 3,5-dit-butyl :phenol, benzoyl peroxide and dicumyl

peroxide, and the polymerization completed (in aqueous suspension in the presence ofgelatine, mineral oil and sodium lauryl sulphate. The products are blended with poly(2,6-dimethyl-, 2,6- diethyl, 2-methyl-6-ethyl-, 2-methyl-6-propyl-, 2,6-dipropyl- and 2-ethyl-6-propyl-1,4-phenylene)ethers.

申请人：GENERAL ELECTRIC CO.

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