Production manner of foaming nucleating additive content thermoplastics constituent and heat-resistant styrene type resin foaming sheet.

摘要

PPROBLEM TO BE SOLVED: To improve brittleness of a foam sheet of a resin mainly composed of a styrene-methacrylic acid copolymer suitable as a material of a heating container for a microwave oven thereby to prevent sheet cracks. PSOLUTION: The foam sheet of the resin mainly composed of the styrene-methacrylic acid copolymer is manufactured using, as a nucleating agent composition for extrusion foaming of the styrene-methacrylic acid copolymer, a foaming nucleating agent-containing thermoplastic resin composition comprising the styrene-methyl methacrylate copolymer of a specific composition and a foaming nucleating agent. PCOPYRIGHT: (C)2005,JPO&NCIPI