专利名称：Process for producing prefoamed polymer
particles
发明人：Yoshimura, Shohei,Kuwabara, Hideki申请号：EP83112788.1申请日：19831219公开号：EP0113903A2公开日：19840725
摘要：Prefoamed polymer particles having excellent moldability are produced by aprocess comprising a step (impregnating step) of impregnating carbon dioxide or carbondioxide and a volatile blowing agent in polymer particles, a step (dispersing step) ofdispersing the polymer particles into a dispersion medium in a sealed vessel, a step(heating step) of heating the polymer particles to a temperature higher than thesoftening point of said polymer particles, and a step (releasing step) of opening one endof said vessel and simultaneously releasing the polymer particles and dispersion mediumfrom inside the vessel to an atmosphere held at a pressure lower than that of the vessel.In this process, the impregnating step, dispersing step and heating step need not bealtogether effected separately. These steps can be performed simultaneously in one andthe same vessel.
申请人：Japan Styrene Paper Corporation
地址：1-1, 2-chome, Uchisaiwai-cho Chiyoda-ku Tokyo JP
国籍：JP
代理机构：DIEHL GLAESER HILTL & PARTNER
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