公开(公告)号：US20080058496A1

公开(公告)日：2008-03-06

申请号：US11511214

申请日：2006-08-29

Applicant: Ya-Pin Chen ,  Chuan-Ter Yan ,  Chih-Hsiung Huang ,  Chao-Ching Huang ,  Chin-Wang Kao

Inventor： Ya-Pin Chen ,  Chuan-Ter Yan ,  Chih-Hsiung Huang ,  Chao-Ching Huang ,  Chin-Wang Kao

IPC: C08G69/08

CPC classification number: C08G73/1039 ,  C09K19/36 ,  C09K19/56 ,  G02F1/133723

Abstract: A polyamic acid-based composition is prepared by reacting a diamine reactant and a dianhydride reactant. The diamine reactant includes 20-70 mol % of a fluorine-containing diamine component having a trifluoromethyl group substituted main chain, and 30-80 mol % of a fluorine-free diamine component. The dianhydride reactant includes 65-100 mol % of an aromatic tetracarboxylic dianhydride component and 0-35 mol % of an aliphatic tetracarboxylic dianhydride component. A liquid crystal orienting agent includes the aforesaid polyamic acid-based composition and a solvent. A liquid crystal orienting film is formed by a process including: preparing a mixture containing the aforesaid polyamic acid-based composition and a solvent; coating the mixture onto a substrate so as to form a film on the substrate; and heating the film so as to convert polyamic acid of the polyamic acid-based composition into polyamide.

Abstract translation: 通过使二胺反应物和二酐反应物反应来制备基于聚酰胺酸的组合物。 二胺反应物包含20-70mol％的具有三氟甲基取代的主链的含氟二胺组分和30-80mol％的无氟二胺组分。 二酐反应物包含65-100mol％的芳族四羧酸二酐组分和0-35mol％脂族四羧酸二酐组分。 液晶取向剂包括上述聚酰胺酸类组合物和溶剂。 通过包括以下工艺形成液晶取向膜：制备含有上述聚酰胺酸基组合物和溶剂的混合物; 将混合物涂布在基材上，以在基材上形成膜; 并加热该膜以将聚酰胺酸基组合物的聚酰胺酸转化为聚酰胺。