Radical-generating film-forming composition, radical-generating film, and method for producing horizontal electric field liquid crystal cell
A horizontal electric field, liquid crystal cell technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of response time degradation, uneven or ghosting, poor effect, etc., to achieve high response speed, good black display, high backlight The effect of transmittance
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[0256] Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to these examples. The labeling of the compound used in the polymerization of the polymer and the preparation of the film-forming composition, and the method for evaluating the properties are shown below.
[0257] [Chemical 29]
[0258]
[0259] [Chemical 30]
[0260]
[0261] NMP: N-methyl-2-pyrrolidone,
[0262] BCS: Butyl Cellosolve
[0263]
[0264]The polyamic acid solution was measured at 25°C using an E-type viscometer TVE-22H (manufactured by Toki Sangyo Co., Ltd.) with a sample volume of 1.1 mL and a cone rotor (Cone Rotor) TE-1 (1°34', R24). viscosity.
[0265]
[0266] The molecular weight was measured by a normal temperature GPC (gel permeation chromatography) apparatus, and the number average molecular weight (Mn) and the weight average molecular weight (Mw) were calculated as polyethylene glycol and polyethylene oxide...
Synthetic example 1
[0284] Polymerization of TC-1 / DA-1, DA-2(50) polyamic acid (PAA-1)
[0285] DA-1 (1.62 g: 15.0 mmol), DA-2 (3.66 g: 15.0 mmol) and NMP (55.4 g) were weighed in a 100 mL 4-neck flask equipped with a mechanical stirrer and a nitrogen introduction tube, and stirred for a while After being dissolved, TC-1 (6.25 g: 27.9 mmol) and NMP (10.0 g) were added, and the reaction was carried out at 40° C. for 6 hours under a nitrogen atmosphere to obtain a polyamic acid solution having a solid content concentration of 15% by mass. (PAA-1). The viscosity was 390 mPa·s, and the weight average molecular weight was about 32,100.
Synthetic example 2
[0286] Polymerization of TC-3 / DA-3(100) polyamic acid (PAA-2)
[0287] DA-3 (5.73 g: 20.0 mmol) and NMP (61.8 g) were weighed into a 100 mL 4-neck flask equipped with a mechanical stirrer and nitrogen introduction tube, and after stirring for a while to dissolve, TC-3 (4.06 g) was added. g: 18.6 mmol) and NMP (10.0 g) were reacted at 23° C. for 6 hours under a nitrogen atmosphere to obtain a polyamic acid solution (PAA-2) having a solid content concentration of 12% by mass. The viscosity was 240 mPa·s and the weight average molecular weight was about 25900.
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