发明授权
- 专利标题： Polyimide and preparation process of same
- 专利标题（中）： 聚酰亚胺及其制备方法相同
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申请号： US40608申请日： 1993-03-31
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公开(公告)号： US5354839A公开(公告)日： 1994-10-11
- 发明人: Wataru Yamashita , Yoshihiro Sakata , Toshiyuki Kataoka , Yuichi Okawa , Hideaki Oikawa , Tadashi Asanuma , Mitsunori Matsuo , Tsutomu Ishida , Keizaburo Yamaguchi , Akihiro Yamaguchi
- 申请人： Wataru Yamashita , Yoshihiro Sakata , Toshiyuki Kataoka , Yuichi Okawa , Hideaki Oikawa , Tadashi Asanuma , Mitsunori Matsuo , Tsutomu Ishida , Keizaburo Yamaguchi , Akihiro Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-085466 19920407; JPX4-102815 19920422; JPX4-247872 19920917; JPX4-249631 19920918; JPX4-302271 19921112; JPX4-312039 19921120; JPX4-318818 19921127
- 主分类号： C07C217/90
- IPC分类号： C07C217/90 ; C08G73/10 ; H05K1/00 ; H05K1/03 ; C08G69/26
摘要：
A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## The polyimide can have an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.
公开/授权文献
- US5909964A Crease ironing apparatus 公开/授权日：1999-06-08
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