Liquid crystal aligning agent, method for forming liquid crystal alignment film, and liquid crystal display device
A technology of liquid crystal alignment agent and repeating unit, which is applied in liquid crystal materials, chemical instruments and methods, instruments, etc., and can solve problems such as large radiation doses
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0169] [Preparation of liquid crystal aligning agent]
[0170] The liquid crystal aligning agent of this invention contains radiation-sensitive polysiloxane as an essential component as mentioned above, and can contain other components as needed, It is preferable to prepare as the composition of the solution form which each component melt|dissolved in the organic solvent.
[0171] The organic solvent usable for the preparation of the liquid crystal aligning agent of the present invention is preferably a solvent that dissolves radiation-sensitive polysiloxane and other components optionally used but does not react with them.
[0172] The organic solvent which can be preferably used for the liquid crystal aligning agent of this invention differs according to the kind of other polymer added arbitrarily.
[0173] When the liquid crystal aligning agent of the present invention contains radiation-sensitive polysiloxane and at least one polymer selected from polyamic acid and polyimi...
Embodiment
[0201] Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.
[0202] In the following examples, the weight average molecular weight is a polystyrene-equivalent value measured by gel permeation chromatography under the following conditions.
[0203] Column: manufactured by Tosoh Corporation, TSKgelGRCXLII
[0204] Solvent: tetrahydrofuran
[0205] Temperature: 40°C
[0206] Pressure: 68kgf / cm 2
[0207]
Synthetic example P
[0209] The cinnamic acid derivative (2-P4-1) was synthesized according to the following synthetic route 1.
[0210]
[0211] 91.3 g of methyl 4-hydroxybenzoate, 182.4 g of potassium carbonate, and 320 ml of N-methyl-2-pyrrolidone were added to a 1 L eggplant-shaped flask, and after stirring at room temperature for 1 hour, 99.7 g of 1-bromopentane was added. The reaction was carried out with stirring at 100°C for 5 hours. After the reaction was completed, reprecipitation was performed with water. Next, 48 g of sodium hydroxide and 400 ml of water were added to the precipitate, and the mixture was refluxed for 3 hours to perform a hydrolysis reaction. After the reaction was completed, it was neutralized with hydrochloric acid, and the resulting precipitate was recrystallized from ethanol to obtain 104 g of white crystals of compound (2-P4-1-1).
[0212] 104 g of this compound (2-P4-1-1) was taken into a reaction vessel, 1 L of thionyl chloride and 770 µl of N,N dimethylform...
PUM
| Property | Measurement | Unit |
|---|---|---|
| surface tension | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
