PRODUCTION OF MATTE RESIN MOLDINGS

摘要

PURPOSE:To obtain a matte moldings useful in an office automation (OA) equipment, etc., by heat-treating moldings obtained by using a thermoplastic polymer composition consisting of acrylonitrile-styrene based polymer and specific rubber component at a definite temperature or above. CONSTITUTION:A thermoplastic polymer composition composed of (A) 70-95wt.% acrylonitrile-styrene based polymer and (B) 5-30% rubber component crosslinked with a crosslinking agent containing partially or wholly unsaturated nitrile-conjugated diene based copolymer rubber (preferably copolymer rubber consisting of 10-50% unsaturated nitrile and 90-50% conjugated diene) is used to afford moldings which are heat-treated at >=(T-10) deg.C (T is heat distortion temperature of the above-mentioned thermoplastic polymer composition) to provide the matte moldings.