Polymer composition, and liquid crystal alignment film for horizontal electric field drive-mode liquid crystal display element
A composition and polymer technology, applied in optics, instruments, nonlinear optics, etc., can solve problems such as inability to rub liquid crystal alignment film uniformly, failure to achieve liquid crystal alignment, and static electricity
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[0243] [Preparation of polymer composition]
[0244] The polymer composition used in the present invention is preferably prepared in the form of a coating liquid, and is suitable for forming a liquid crystal alignment film. That is, the polymer composition used in the present invention is preferably prepared in the form of a solution in which a resin component for forming a resin coating film is dissolved in an organic solvent. Here, the resin component refers to a resin component containing the photosensitive side chain type polymer capable of expressing liquid crystallinity described above. At this time, the content of the resin component is preferably 1% by mass to 20% by mass, more preferably 3% by mass to 15% by mass, and particularly preferably 3% by mass to 10% by mass.
[0245] In the polymer composition of this embodiment, the aforementioned resin components may all be the above-mentioned photosensitive side chain type polymer capable of expressing liquid crystallinity, a...
Example Embodiment
[0313] Example
[0314] The abbreviations used in the examples are as follows.
[0315] (Methacrylic monomer)
[0316]
[0317]
[0318] MA1 was synthesized by the synthesis method described in the patent document (WO2011-084546).
[0319] MA2 was synthesized by the synthesis method described in the patent document (Japanese Patent Application Laid-Open No. 9-118717).
[0320] MA3 is a new compound that has not been disclosed in the literature, and its synthesis method is described in detail in Synthesis Example 1 below.
[0321] MA3-1 was synthesized by the synthesis method described in the literature (Liquid Crystals (2005), 32(8), 1031-1044.).
[0322] For MA4, commercially available M6BC (manufactured by Green Chemical Co., Ltd.) was used.
[0323] (Organic solvents)
[0324] THF: Tetrahydrofuran
[0325] NMP: N-methyl-2-pyrrolidone
[0326] BC: Butyl cellosolve
[0327] EDC: 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
[0328] DMAP: 4-Dimethylaminopyridine
[0329] (Polymeri...
Example Embodiment
[0331]
[0332] Synthesis of compound [MA3] (MA9 in the following formula)
[0333]
[0334] Compound [MA2] (20.00g, 65.3mmol), compound [MA9-1] (ie, compound MA3-1) (14.09g, 71.8mmol), EDC (15.02g, 78.4mmol), was added to a 500mL four-necked flask. DMAP (0.80 g, 6.53 mmol) and THF (200 g) were reacted at 23°C. Reaction tracking was performed by HPLC, and after confirming the completion of the reaction, the reaction solution was poured into distilled water (1.2 L), ethyl acetate (2 L) was added, and the water layer was removed by a liquid separation operation. After the organic layer was washed with distilled water (500 mL) three times, the organic layer was dried with magnesium sulfate. Thereafter, it was filtered and the solvent was distilled off with an evaporator to obtain compound [MA9-2] (ie, compound MA3-2) as an oily compound.
[0335] Next, pyridinium p-toluenesulfonate (labeled PPTS) (1.59 g, 6.3 mmol) and ethanol (100 g) were added to the obtained compound [MA9-2], and...
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