METHOD FOR MANUFACTURING COMPOSITE RUBBER GRAFT COPOLYMER, THERMOPLASTIC RESIN COMPOSITION, AND MOLDED PRODUCT

PROBLEM TO BE SOLVED: To provide a composite rubber graft copolymer having excellent balance of impact resistance, stratified peeling resistance, thermal stability, and hydrolysis resistance, and a thermoplastic resin composition including this copolymer. SOLUTION: A method for polymerizing vinyl mo...

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Hauptverfasser:	KASAI TOSHIHIRO, HIRAI SHINYA, SHISHIDO KOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a composite rubber graft copolymer having excellent balance of impact resistance, stratified peeling resistance, thermal stability, and hydrolysis resistance, and a thermoplastic resin composition including this copolymer. SOLUTION: A method for polymerizing vinyl monomers under presence of a latex of the composite rubber consisting of a polyorganosiloxane rubber and a polyalkyl (meth)acrylate rubber to obtain a graft copolymer is provided. In the method, a content rate of the polyorganosiloxane in the graft copolymer is set to be 15 to 50 mass% and a content rate of the composite rubber is set to be 60 to 85 mass%. A thermoplastic resin composition containing the graft copolymer obtained by this method is also provided. COPYRIGHT: (C)2011,JPO&INPIT