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1. 发明授权

US6046303A Soluble polyimide resin having alkoxy substituents and the preparation method thereof 失效
标题翻译：具有烷氧基取代基的可溶性聚酰亚胺树脂及其制备方法
公开(公告)号：US6046303A
公开(公告)日：2000-04-04
申请号：US151722
申请日：1998-09-11
申请人： Kil-Yeong Choi , Mi-Hie Yi , Moon-Young Jin , Jin-Tae Jung , Jeong-Ghi Koo , Jae-Eun Cho
发明人： Kil-Yeong Choi , Mi-Hie Yi , Moon-Young Jin , Jin-Tae Jung , Jeong-Ghi Koo , Jae-Eun Cho
IPC分类号： G02F1/1337 , C08G73/10
CPC分类号： C08G73/10 , C08G73/1042 , G02F1/133723
摘要： The invention herein relates to a soluble polyimide resin for a liquid crystal alignment layer and the manufacturing method thereof, wherein a mixture of aliphatic tetracarboxylic acid dianhydrides and aromatic diamine having aliphatic side chains are used to yield a soluble polyimide resin which has superior heat-resistance, solubility, surface hardness, transparency and liquid crystal alignment capacity.The soluble polyimide resin having alkoxy substituents, for a liquid crystal layer, according to the present invention, is manufactured by adding a mixture of dioxotetrahydrofuran 3-methylcyclohexene-1,2-dicarboxylic dianhydride, which is an aliphatic tetracarboxylic acid dianhydride and aromatic tetracarboxylic acid dianhydride to a mixture of aromatic diamine, and said dioxotetrahydrofuran 3-methylcyclohexene- 1,2-dicarboxylic dianhydride is used in the amount of 50 to 99 mol % to the total amount of anhydrides.The polyimide resin according to the present invention not only has superior heat-resistance and mechanical characteristics but also excellent solubility and transparency, which could be applicable as a liquid crystal alignment layer for the TFT-LCD requiring difficult processing condition such as a low temperature and vigorous rubbing processing. Further, the polyimide resin may be useful as basic heat resistant structural materials for advanced industry.
摘要翻译：本发明涉及一种用于液晶取向层的可溶性聚酰亚胺树脂及其制造方法，其中使用具有脂肪族侧链的脂肪族四羧酸二酐和芳香族二胺的混合物，得到耐热性优异的可溶性聚酰亚胺树脂，溶解度，表面硬度，透明度和液晶取向能力。通过将作为脂肪族四羧酸二酐的二氧代四氢呋喃-3-甲基环己烯-1,2-二甲酸二酐和芳香族四羧酸的混合物加入本发明的液晶层中，具有烷氧基取代基的可溶性聚酰亚胺树脂二酐与芳族二胺的混合物和所述二氧四氢呋喃-3-甲基环己烯-1,2-二羧酸二酐的用量相对于酸酐总量为50〜99摩尔％。根据本发明的聚酰亚胺树脂不仅具有优异的耐热性和机械特性，而且具有优异的溶解性和透明性，其可以应用于需要难处理条件如TFT的LCD-LCD的液晶取向层，如低温和有力的摩擦加工。此外，聚酰亚胺树脂可用作先进工业的基础耐热结构材料。

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