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公开(公告)号:US5969055A
公开(公告)日:1999-10-19
申请号:US981829
申请日:1998-01-15
申请人: Michinori Nishikawa , Kyouyu Yasuda , Shigeo Kawamura , Tsukasa Toyoshima , Yasuo Matsuki , Kengo Wakabayashi
发明人: Michinori Nishikawa , Kyouyu Yasuda , Shigeo Kawamura , Tsukasa Toyoshima , Yasuo Matsuki , Kengo Wakabayashi
IPC分类号: C08G73/10 , G02F1/1337 , C09K19/56 , G02F1/13
CPC分类号: C08G73/10 , G02F1/133723
摘要: A liquid crystal alignment agent containing at least two kinds of polymers selected from the group consisting of polyamic acids and imidized polymers and having a structure obtained by dehydration and ring closure of polyamic acid. In the at least two kinds of polymers contained in the liquid crystal alignment agent, the polymer of higher imidization degree has a smaller surface free energy. The liquid crystal alignment agent gives a liquid crystal display device having less stuck image and high pretilt angle.
摘要翻译: PCT No.PCT / JP97 / 01635 Sec。 371日期1998年1月15日 102(e)日期1998年1月15日PCT提交1997年5月15日PCT公布。 公开号WO97 / 43687 日期1997年11月20日含有选自聚酰胺酸和酰亚胺化聚合物中的至少两种聚合物的液晶取向剂,具有通过聚酰胺酸脱水和闭环获得的结构。 在液晶取向剂中所含的至少两种聚合物中,酰亚胺化度高的聚合物具有较小的表面自由能。 液晶取向剂给出了具有较少卡滞图像和高预倾角的液晶显示装置。
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公开(公告)号:US5783656A
公开(公告)日:1998-07-21
申请号:US791616
申请日:1997-01-31
申请人: Masayuki Kimura , Tsukasa Toyoshima , Keiichi Yamamoto , Kengo Wakabayashi , Yasuo Matsuki , Kyouyu Yasuda
发明人: Masayuki Kimura , Tsukasa Toyoshima , Keiichi Yamamoto , Kengo Wakabayashi , Yasuo Matsuki , Kyouyu Yasuda
IPC分类号: C08G73/10 , G02F1/1337 , C08G69/26 , C08G73/12
CPC分类号: C08G73/1039 , G02F1/133723 , Y10T428/1023 , Y10T428/31721
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.
摘要翻译: 提供通过使式(1)的二胺化合物(1)其中R 1是具有1至12个碳原子的烷基,具有1至12个碳原子的卤代烷基或卤素原子得到的聚酰胺酸 X和Y各自独立地是二价连接基团与四羧酸二酐; 通过使上述聚酰胺酸脱水和闭环而获得的聚酰亚胺; 和含有上述聚酰胺酸和/或上述聚酰亚胺的液晶取向剂。
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