发明名称 Preparation of polyoxymethylenes
摘要 Continuous process for preparing polyoxymethylene homo- or copolymers by bulk polymerization of the monomers in the presence of cationic initiators, and also, if desired, in the presence of regulators, where during the polymerization both the monomers and the polymer are present in molten form and, if desired, the polymer is then deactivated, and the melt is discharged, cooled and pelletized, which comprises discharging, cooling and pelletizing the polymer at an elevated pressure and in the presence of a liquid.
申请公布号 US6756475(B2) 申请公布日期 2004.06.29
申请号 US20020203285 申请日期 2002.08.08
申请人 BASF AKTIENGESELLSCHAFT 发明人 MOURS MARIAN;ANDERLIK RAINER;EGBERS GITTA;KIRSCHEY MICHAEL;ROOS MARTIN
分类号 B29C47/50;B29C67/24;C08G2/04;C08G2/10;C08G2/18;C08G2/28;(IPC1-7):C08G65/34 主分类号 B29C47/50
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