Daxin Materials Corporation

Daxin Material Corporation

Min-Ruei Tsai

Ming-Chih Lai

Wen-Chung Chu

Yi-Chun Lin

Chia-Wen Chang

Po-Yang Wang

Chin-Wen Chang

Provided is a siloxane-containing trianhydride having a structure shown in formula 1: wherein

Siloxane-containing trianhydride, polymer, liquid crystal alignment agent, liquid crystal alignment film, and liquid crystal display device

A liquid crystal alignment solution is provided, including at least one polymer selected from the group consisting of a polyamide acid-polyamide acid polymer represented by formula (A), a polyimide-polyamide acid polymer represented by formula (B) and a polyimide-polyimide polymer represented by formula (C), as defined in the contexts.

Liquid crystal alignment solution

Purification methods of polyamic acid resin and polyimide resin are provided. The purification methods of polyamic acid resin or polyimide resin includes providing a polyamic acid resin or a polyimide resin containing metal ion impurities. Thereafter, a cation exchange resin is used to react with the polyamic acid resin or the polyimide resin in order to remove the metal ion impurities therein, and a water content in the polyamic acid resin or the polyimide resin is removed to purify the polyamic acid resin or polyimide resin.

Purification method of polyamic acid resin and polyimide resin

A liquid crystal alignment solution is provided. The liquid crystal alignment solution includes a first polyimide-polyamide acid and a second polyimide-polyamide acid. The first polyimide-polyamide acid is represented by formula (A), and the second polyimide-polyamide acid is represented by formula (B), in which T, T, Tand Tare each independently a tetravalent residue of a tetracarboxylic acid dianhydride; D, D, Dand Dare each independently a divalent residue of a diamine; and m, n, p and q are each independently an positive integer, wherein m/(m+n)&#x2266;0.5 and p/(p+q)&#x2267;0.5.

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Kaohsiung, Taiwan

Min-Ruei Tsai