Polyimide film-forming polyamide acid solution
    13.
    发明授权
    Polyimide film-forming polyamide acid solution 失效
    聚酰亚胺成膜聚酰胺酸溶液

    公开(公告)号:US4880895A

    公开(公告)日:1989-11-14

    申请号:US32643

    申请日:1987-03-31

    摘要: A polyamide acid solution is disclosed, comprising a polyamide acid comprising as main components at least one recurring unit selected from the recurring units of the formulae (I) to (IV) and a recurring unit of formula (V), dissolved in an organic solvent comprising as a main component an amide type polar solvent having a boiling point of 170.degree. C. or less. The solution is capable of forming a polyimide film which has colorless transparency free from coloration and strong adhesion to a substrate for liquid crystal cell enough to prevent penetration of water into interface between the substrate and film. The solution is particularly useful for forming a liquid crystal oriented film.

    摘要翻译: 公开了一种聚酰胺酸溶液,其包含作为主要成分的至少一种选自式(I)至(IV)的重复单元和式(V)的重复单元)的重复单元的聚酰胺酸,其溶解于有机溶剂 包括沸点为170℃以下的酰胺型极性溶剂作为主要成分。 该溶液能够形成聚酰亚胺膜,该聚酰亚胺膜具有无色的透明性,并且对于液晶单元的基底具有很强的粘附性,足以防止水渗入基底和膜之间的界面。 该溶液对于形成液晶取向膜特别有用。