Liquid crystal alignment agent, liquid crystal alignment film and liquid crystal display element
A technology of liquid crystal aligning agent and liquid crystal aligning film, which is applied in the directions of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problem of afterimages, small anisotropy in the orientation direction of polymer films, and inability to obtain sufficient liquid crystal orientation, etc. problem, to achieve the effect of high irradiation sensitivity and good afterimage characteristics
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[0149] The present invention will be more specifically described below, but the invention is not limited thereto. It should be noted that the method of measuring the referred to as the compound of the compound is as follows.
[0150] NMP: N-methyl-2-pyrrolidone, GBL: γ-butyl
[0151] NEP: N-ethyl-2-pyrrolidone, BCS: butyl fibrous
[0152] PB: glycol monuridyl ether,
[0153] Additive A: N-α- (9-fluorenylmethoxycarbonyl) -N-τ-tert-butoxycarbonyl-L-histidine,
[0154] ADA-0: 1,3-dimethyl-1,2,3,4-cyclobutane tetracarboxylic dihydride
[0155]
[0156]
[0157] The method of determining the characteristics used in the examples is as described below.
[0158] [Molecular weight]
[0159] Further, the molecular weight of the polyamate is measured by the GPC (a normal temperature gel permeation chromatography) device, and the number average molecular weight (also referred to as Mn) and a heavier molecular weight of the heavier molecular weight are calculated in the form of polyethylen...
Synthetic example 4～32
[0222] NMP is added using the tetracarboxylic dianhydride and the amount thereof, and the solid component concentration can be obtained in Table 1-1 and Table 1-2, and NMP is added to the solid component concentration of the polyamic acid solution. In addition to this, the polyamic acid obtained by the synthesis example 4 to 32 is obtained.
[0223] Tables 1-1 and Tables 1-2 described above will be illustrated in the above-described synthesis examples 3 to 32. It should be noted that the unit having a numerical value of the diamine and tetracarboxylic acid dihydride names in Table 1-1 and Table 1-2 is "mmol".
[0224] [Table 1-1]
[0225]
[0226] [Table 1-2]
[0227]
[0228] Synthesis Example 33>
[0229] 300 mL of the stirring apparatus and nitrogen was introduced into a nitrogen atmosphere, DA-20.78 g (7.21 mmol), DA-1 1.86 g (4.21 mmol), DA-8 1.86G (7.21 mmol), DA- 291.64 g (4.81 mmol) was added NMP 53 mL, GBL 145 mL, which was dissolved as a base of pyridine (55.97 mmol)...
Embodiment 2～38
[0256]The polyamic acid solution and the amount, and the amount thereof, and the amount thereof, and the solvent, and the amount thereof, and the liquid crystal alignment agent Al- 2 ~ Al-38. Picture to Tables 3-1 and Table 3-2 below in Examples 1 to 38 described above. It should be noted that the units of the values in the parentheses in Table 3 and Table 3-2 are gram (g).
[0257] [Table 3-1]
[0258]
[0259] Table 3-2]
[0260]
[0261]
[0262] In a 50 ml triangular flask, a stirrer is added, 12.50 g of the polyimide solution (B-1) obtained in Synthesis Example 1 was taken, and 1.0% by mass of 3-cyclopproxproppropyl methyl dieceoxide was added. The NMP solution of the silane was 1.50 g, NMP10.00 g, BCS 6.00 g, and stirred with a magnetic stirrer for 30 minutes to obtain a liquid crystal aligning agent (Al-1b).
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