发明授权
- 专利标题： Low dielectric polyimides
- 专利标题（中）： 低介电聚酰亚胺
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申请号： US237712申请日： 1994-05-02
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公开(公告)号： US5428102A公开(公告)日： 1995-06-27
- 发明人: Anne K. St. Clair , Terry L. St. Clair , William P. Winfree
- 申请人： Anne K. St. Clair , Terry L. St. Clair , William P. Winfree
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the United States National Aeronautics and Space Administration
- 当前专利权人： The United States of America as represented by the United States National Aeronautics and Space Administration
- 当前专利权人地址： DC Washington
- 主分类号： C08G73/10
- IPC分类号： C08G73/10 ; C08L79/08
摘要：
A series of polyimides based on the dianhydride of 1,4-bis(3,4-dicarboxyphenoxy)benzene (HQDEA) or on 2,2-bis[4(3-aminophenoxy)phenyl]hexafluoropropane (3-BDAF) are evolved from high molecular weight polyamic acid solutions yielding flexible free-standing films and coatings in the fully imidized form which have a dielectric constant in the range of 2.5 to 3.1 at 10 GHz.
公开/授权文献
- US4408409A Ammunition magazine package combination 公开/授权日：1983-10-11
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