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公开(公告)号:US20080154018A1
公开(公告)日:2008-06-26
申请号:US11977505
申请日:2007-10-25
申请人: Wolfgang Ebert , Bernhard Nietzwetzki , Rainer Mellis , Wilfried Haese , Bert Ruytinx , Alexander Karbach , Alexander Meyer
发明人: Wolfgang Ebert , Bernhard Nietzwetzki , Rainer Mellis , Wilfried Haese , Bert Ruytinx , Alexander Karbach , Alexander Meyer
CPC分类号: B29C45/17 , B29C48/08 , B29C48/27 , B29C48/69 , B29C48/693 , B29K2069/00 , B29L2011/00 , B29L2017/005 , C08G64/406
摘要: A process for purifying polycarbonate is disclosed. The process entails filtering molten polycarbonate having weight average molecular weight of 14,000 to 30,000 g/mol through at least one non-woven metal structure having a thickness of 5 to 1 mm, said structure including at least one dense layer, and at least one less dense layer wherein said dense layer is 0.05 to 0.2 mm thick and has pore size of 1 to 10 μm to obtain pure polycarbonate.
摘要翻译: 公开了一种用于净化聚碳酸酯的方法。 该方法需要通过至少一种厚度为5至1mm的无纺金属结构物过滤具有14,000至30,000g / mol重均分子量的熔融聚碳酸酯,所述结构包括至少一个致密层和至少一个较低的 致密层,其中所述致密层为0.05至0.2mm厚并且具有1至10μm的孔径以获得纯聚碳酸酯。