STYRENE-MODIFIED POLYPROPYLENE-BASED RESIN PARTICLE, FOAMABLE STYRENE-MODIFIED POLYPROPYLENE-BASED RESIN PARTICLE, STYRENE-MODIFIED POLYPROPYLENE-BASED RESIN FOAMED PARTICLE, STYRENE-MODIFIED POLYPROPYLENE-BASED RESIN FOAMED MOLDED PRODUCT, AND PRODUCTION METHODS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a styrene-modified polypropylene-based resin foamed molded product excellent in mechanical properties and chemical resistance, etc., by modifying weak points of both of a polystyrene-based resin foamed molded product and a polypropylene-based resin foamed molded product.

SOLUTION: A method for producing the styrene-modified polypropylene-based resin product comprises a first polymerization process for carrying out the first polymerization of a styrene-based monomer at a temperature range of (T-10) to (T+20)°C, wherein the melting point of the polypropylene-based resin is T°C, and a process for, following the first polymerization process, adding the styrene-based monomer and a polymerization initiator thereto and performing impregnation of the styrene-based monomer to the polypropylene-based resin particles and a second polymerization process at a temperature of (T-25) to (T+15)°C.

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