FORMABLE VINYL CHLORIDE RESIN COMPOSITION FOR POWDER MOLDING AND PROCESS THEREOF

摘要

A vinyl chloride resin composition for powder molding which is obtainable by a method comprising a first step in which from 40 to 120 parts by weight of plasticizer is blended with 100 parts by weight of granular vinyl chloride resin obtainable by suspension or bulk polymerisation; a second step in which from 0.5 to 40 parts by weight of at least one polymer or copolymer having an active hydrogen in the molecule [component (A)] and from 0.1 to 10 parts by weight of crosslinkable isocyanate compound [component (B)] are added and dry-blended; and a third step in which while the dry-blend system is cooling from a maximum temperature, finely powdered vinyl chloride resin obtainable by emulsion or micro-suspension polymerisation is added to coat the dry-blend.