Liquid crystal aligning agent for forming liquid crystal alignment film, method for forming liquid crystal alignment film and method for manufacturing liquid crystal display device
A technology of liquid crystal alignment agent and solvent, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., and can solve problems such as damage, deterioration of leveling, and reduction
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[0391] Hereinafter, the present invention will be described through examples. In addition, the evaluation methods and compounds used in the examples are as follows.
[0392]
[0393] 1. Weight average molecular weight (Mw)
[0394] The weight average molecular weight of a polyamic acid is calculated|required by the GPC method using 2695 separation modules and 2414 differential refractometers (made by Waters), and it performs polystyrene conversion. Dilute the obtained polyamic acid with a phosphoric acid-dimethylformamide (Dimethylformamide, DMF) mixed solution (phosphoric acid / DMF=0.6 / 100: weight ratio) so that the polyamic acid concentration becomes about 2% by weight . HSPgel RT MB-M (manufactured by Waters) was used as a column, and the mixed solution was used as a developing solvent, and the measurement was performed at a column temperature of 50° C. and a flow rate of 0.40 mL / min. As the standard polystyrene, TSK standard polystyrene manufactured by Tosoh Co., Ltd. ...
Synthetic example A-1
[0439] Add 3.2786 g of the compound represented by formula (V-2-1) in a 200 mL brown four-neck flask equipped with a thermometer, a stirrer, a raw material addition port and a nitrogen gas introduction port, and formula (DI-5-1) (m 0.6148 g of the compound represented by =2), 0.2591 g of the compound represented by the formula (DI-13-1), and 68.0 g of dehydrated NMP were stirred and dissolved under a dry nitrogen stream. Subsequently, 7.8475 g of the compound represented by the formula (AN-4-17) (m=8) and 80.0 g of dehydrated NMP were added, and stirring was continued at room temperature for 24 hours. BC 40.0g was added to the said reaction solution, and the varnish whose solid content concentration was 6 weight% was obtained. Let the said varnish be (PA-1). The weight average molecular weight of the polyamic acid contained in (PA-1) was 10,200.
[0440] [Synthesis Example A-2 to Synthesis Example A-8]
[0441] Except changing the composition of tetracarboxylic dianhydride,...
Synthetic example B-1
[0444] Add 3.8246 g of the compound represented by the formula (DI-13-1) and 3.8246 g of the compound represented by the formula (DI-5-9) into a 200 mL brown four-neck flask equipped with a thermometer, a stirrer, a raw material input port, and a nitrogen gas introduction port. 1.7122 g of the compound, 0.6165 g of the compound represented by the formula (DI-4-1), and 48.0 g of dehydrated NMP were stirred and dissolved under a dry nitrogen stream. 3.6708 g of the compound represented by the formula (AN-1-1), 2.1760 g of the compound represented by the formula (AN-3-2), and 100.0 g of dehydrated NMP were added, and stirring was continued at room temperature for 24 hours. BC 40.0g was added to the said reaction solution, and the varnish whose solid content concentration was 6 weight% was obtained. Let the said varnish be (PB-1). The weight average molecular weight of the polyamic acid contained in (PB-1) was 50,200.
[0445] [Synthesis Example B-2, Synthesis Example B-3 and Sy...
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