发明申请
- 专利标题： Method for preparing polyimide and polyimide prepared thereby
- 专利标题（中）： 由此制备聚酰亚胺和聚酰亚胺的方法
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申请号： US10683226申请日： 2003-10-10
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公开(公告)号： US20050080228A1公开(公告)日： 2005-04-14
- 发明人: Norberto Silvi , Mark Giammattei , Paul Howson , Farid Khouri
- 申请人： Norberto Silvi , Mark Giammattei , Paul Howson , Farid Khouri
- 主分类号： C08G73/10
- IPC分类号： C08G73/10 ; C08G69/08
摘要：
A method for preparing a polyimide includes introducing a mixture of an oligomer and a solvent to an extruder, removing solvent via at least one extruder vent, and melt kneading the oligomer to form a polyimide. The polyimide has a low residual solvent content. The method is faster than solution polymerization of polyimides, and it avoids the stoichiometric inaccuracies associated with reactive extrusion processes that use monomers as starting materials.
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