Liquid crystal photo-alignment agent, liquid crystal photo-alignment film, and preparation methods and applications for liquid crystal photo-alignment agent and liquid crystal photo-alignment film
A photo-alignment film and photo-alignment technology, used in liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of unsatisfactory liquid crystal photo-alignment films, and achieve low residual DC voltage, good friction resistance, and low ions. effect of concentration
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1）
[0038] This example is a liquid crystal photo-alignment agent [recorded as PAA-1] containing a polyamic acid, and its preparation method is as follows:
[0039] In a 1000mL three-neck round bottom flask equipped with a mechanical stirrer, a thermometer and a nitrogen protection device, 16.85g of compound h (0.085mol) was dissolved in 237g of N-methylpyrrolidone, and then 3.14g of compound i was added (0.015mol), after stirring evenly, add 21.85g of 2,3,5-tricarboxycyclopentyl acetic acid dianhydride (0.0975mol) in batches, stir at room temperature (15~25℃, the same below) for 3h, then add to the reaction Add 168g of ethylene glycol monobutyl ether to the solution, then dilute with 390g of N-methylpyrrolidone to a solid content of 5wt%, and finally obtain liquid crystal photoalignment agent solution PAA-1 through 0.1μ precision filtration, and its viscosity is 28cp ( 25°C).
Embodiment 2）
[0041] This example is still a liquid crystal photo-alignment agent [referred to as PAA-2] containing a polyamic acid, and its preparation method is as follows:
[0042] In a 1000mL three-necked round bottom flask equipped with a mechanical stirrer, a thermometer and a nitrogen protection device, 28.93g of compound a (0.085mol) and 3.14g of compound i (0.015mol) were dissolved in 303g of N-methylpyrrolidone After stirring evenly, add 19.60g of 1,2,3,4-butanetetracarboxylic dianhydride (0.099mol) in batches, stir at room temperature for 24h, then add 179g of ethylene glycol monobutyl ether to the reaction solution, and then Diluted with 361g of N-methylpyrrolidone to a solid content of 5.8wt%, and finally filtered through 0.1μ precision to obtain a liquid crystal photo-alignment agent solution PAA-2 with a viscosity of 60cp (25°C).
Embodiment 3）
[0044] This example is a liquid crystal photo-alignment agent [referred to as PI-1] containing a polyimide, and its preparation method is as follows:
[0045] In a 500mL three-necked round-bottom flask equipped with a mechanical stirrer, a thermometer and a nitrogen protection device, dissolve 36.59g of compound d (0.085mol) in 160mL of N-methylpyrrolidone, and then add 3.14g of compound i (0.015mol), after stirring evenly, add 22.08g of 1,2,4,5-cyclohexanetetracarboxylic dianhydride (0.0985mol) in batches, stir at room temperature for 7h, then add 60mL of toluene and heat to reflux, water separation Remove water for 3 hours, evaporate toluene, then raise the temperature to 180°C and stir for 3 hours, then cool down to 25°C, pour the reaction solution into ethanol to precipitate polyimide resin, and dry it in vacuum to obtain polyimide resin. Take 10g polyimide resin Add 20g of ethylene glycol monobutyl ether to the imide resin, then dilute it to a solid content of 5wt% with 1...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More