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Diamine containing Triazine group, Polyamic Acid synthesized from the Diamine, and LC Alignment Layer Prepared by the Polyamic acid
Diamine containing Triazine group, Polyamic Acid synthesized from the Diamine, and LC Alignment Layer Prepared by the Polyamic acid
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机译:包含三嗪基的二胺,由二胺合成的聚酰胺酸和由聚酰胺酸制备的LC取向层
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摘要
PURPOSE: Provided are a diamine compound and a polyamic acid prepared therefrom, which is capable of producing a liquid crystal alignment film having excellent printability, liquid crystal dispersion and high pretilt angle with lower defective rate. CONSTITUTION: The triazine group-containing diamine compound is represented by the formula 1, wherein X, Y and Z are a direct linkage, -O-, -COO-, -CONH- or -OCO-, n is an integer of 0-12, and A is a monovalent C1-C10 organic group with a linear type, a branched type or its combination. The diamine compound-containing component(a) is reacted with acid dianhydride component(b) to prepare a polyamic acid containing a repeating unit of the formula 3, wherein X is at least one selected from functional groups of the formula 4, Y is at least one selected from functional groups of the formula 5, Z is at least one selected from functional groups of the formula 6 or the formula 7, Z' is at least one selected from functional groups of the formula 7. The liquid crystal alignment film is manufactured by coating a substrate with a polyamic acid solution and subjecting the solution to entire or partial amidation.
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