Preparation of minute foamed body

摘要: PURPOSE: To obtain a method for easily dispersing big flocculated particles formed so as to have uniform particle size, by containing first process foaming minute globules under heating quench the foamed and second continuously passing slurry of obtained through gap between two rotating grinding wheels disperse particles. CONSTITUTION: A thermally expansible each having thermoplastic resin outer shell including volatile liquid agent steam are mixed in pipe keep predetermined pressure temp. foam and, after quenching, is passed prepare globules. Each has an comprising resin, example, acrylonitrile or methacrylate includes agent, hydrocarbon Freon such Trichlorofluoromethane. The dispersed range 2W30wt% be used form. COPYRIGHT: (C)1987,JPO&Japio