发明公开
- 专利标题： A CELLULAR POLYMER CONTAINING PERFORATED CELL WINDOWS AND A PROCESS FOR THE PREPARATION THEREOF
- 专利标题（中）： ZELL型聚合物多孔窗含细胞和方法它的过去。
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申请号： EP93921327.0申请日： 1993-09-02
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公开(公告)号： EP0662100A1公开(公告)日： 1995-07-12
- 发明人: SMITS, Guide, F. , THOEN, Johan, A.
- 申请人： THE DOW CHEMICAL COMPANY
- 申请人地址： 2030 Dow Center, Abbott Road Midland, Michigan 48640 US
- 专利权人： THE DOW CHEMICAL COMPANY
- 当前专利权人： THE DOW CHEMICAL COMPANY
- 当前专利权人地址： 2030 Dow Center, Abbott Road Midland, Michigan 48640 US
- 代理机构： Huber, Bernhard, Dipl.-Chem., et al
- 优先权： US19920951970 19920928
- 国际公布： WO1994007942 19940414
- 主分类号： C08J9
- IPC分类号： C08J9
摘要：
A cellular polymer containing perforated cell windows obtained in the presence of a perforating agent being a substance that has a critical surface free energy of less than 23 mJ/m2 is disclosed. The cellular polymers obtained according to this invention have a fine cell structure and show enhanced dimensional and thermal insulation stability. The invention also relates to rigid polyurethane foam prepared in the presence of, for example, particulate poly(tetrafluoroethylene) or a liquid polyfluoro- or perfluorocarbon, with a boiling point of at least 130 °C, as perforating agent.
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