POLYSTYRENE-BASED RESIN FOR FOOD CONTAINER, POLYSTYRENE- BASED RESIN FOAMED SHEET FOR FOOD CONTAINER AND FOOD CONTAINER OF POLYSTYRENE-BASED RESIN FOAMED SHEET

摘要

PROBLEM TO BE SOLVED: To provide a polystyrene-based resin, a polystyrene-based resin foamed sheet and a food container of a polystyrene-based resin foamed sheet, containg a small amount of styrene dimer and styrene trimer. ;SOLUTION: This polystyrene-based resin is obtained by continuously or intermittently adding styrenic monomer to polystyrene-based resin seed particles suspended in an aqueous dispersion medium, and polymerizing the styrenic monomer while allowing the styrenic monomer to be absorbed in the seed particles. The obtained polystyrene-based resin is formed into the polystyrene- based resin foamed sheet using the polystyrene-based resin as a base material, and the food container of the polystyrene-based resin foamed sheet is obtained by molding the obtained sheet.;COPYRIGHT: (C)2000,JPO