发明授权
- 专利标题: Process for the preparation of a modified polytetrafluoroethylene and its use
- 专利标题(中): 制备改性聚四氟乙烯的方法及其用途
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申请号: US554466申请日: 1995-11-07
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公开(公告)号: US5576402A公开(公告)日: 1996-11-19
- 发明人: Bernd Felix , Klaus Hintzer , Gernot L ohr , Thomas Sch ottle
- 申请人: Bernd Felix , Klaus Hintzer , Gernot L ohr , Thomas Sch ottle
- 申请人地址: DEX
- 专利权人: Hoechst Aktiengesellschaft
- 当前专利权人: Hoechst Aktiengesellschaft
- 当前专利权人地址: DEX
- 优先权: DEX4332712.5 19930925
- 主分类号: C08F2/18
- IPC分类号: C08F2/18 ; C08F2/22 ; C08F4/06 ; C08F4/08 ; C08F4/30 ; C08F214/26 ; C08F2/00
摘要:
If the employment of polymerization auxiliaries in ammonium form is avoided in the preparation of a polytetrafluoroethylene having a content of 0.02 to 1% by weight of units of a perfluoro-(alkyl vinyl) ether by the suspension process, a polymer which does not tend to discoloration on heating is obtained.
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