发明授权
- 专利标题： Polyamic acid, polyimide and liquid crystal aligning agent
- 专利标题（中）： 聚酰胺酸，聚酰亚胺和液晶取向剂
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申请号： US791616申请日： 1997-01-31
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公开(公告)号： US5783656A公开(公告)日： 1998-07-21
- 发明人: Masayuki Kimura , Tsukasa Toyoshima , Keiichi Yamamoto , Kengo Wakabayashi , Yasuo Matsuki , Kyouyu Yasuda
- 申请人： Masayuki Kimura , Tsukasa Toyoshima , Keiichi Yamamoto , Kengo Wakabayashi , Yasuo Matsuki , Kyouyu Yasuda
- 申请人地址： JPX Tokyo
- 专利权人： Japan Synthetic Rubber Co., Ltd.
- 当前专利权人： Japan Synthetic Rubber Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-019562 19960206
- 主分类号： C08G73/10
- IPC分类号： C08G73/10 ; G02F1/1337 ; C08G69/26 ; C08G73/12
摘要：
There are provided a polyamic acid obtainable by reacting a diamine compound of the formula (1) ##STR1## wherein R.sup.1 is an alkyl group having 1 to 12 carbon atoms, a haloalkyl group having 1 to 12 carbon atoms or a halogen atom, each of X and Y is independently a divalent linking group, with a tetracarboxylic acid dianhydride; a polyimide obtainable by dehydrating and ring-closing the above polyamic acid; and a liquid crystal aligning agent containing the above polyamic acid and/or the above polyimide.
公开/授权文献
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