Vertical orientation type liquid crystal orientating agent and vertical orientation type liquid crystal display element
A liquid crystal alignment agent, vertical alignment technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems that have not been done before, and achieve good electrical performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Synthetic example 1
[0150] 21 g (1.0 molar equivalent) of 2,3,5-tricarboxycyclopentylacetic acid dianhydride as tetracarboxylic dianhydride, 9.2 g (0.9 molar equivalent) of p-phenylenediamine as diamine and the above formula (1- 4.7 g (0.1 molar equivalent) of the diamine represented by 1) was dissolved in 140 g of N-methyl-2-pyrrolidone and allowed to react at 60°C for 4 hours to obtain a polyamic acid solution having a concentration of 20% by weight. The polyamic acid solution was prepared into an N-methyl-2-pyrrolidone solution with a polymer concentration of 10% by weight, and the measured solution viscosity was 98 mPa·s.
[0151] After diluting the polyamic acid solution with 325 g of N-methyl-2-pyrrolidone, 7.4 g of pyridine and 9.6 g of acetic anhydride were added, and a dehydration ring-closure reaction was performed at 110° C. for 4 hours. After the dehydration ring-closure reaction, the solvent in the system is replaced by a new N-methyl-2-pyrrolidone (in this operation, the pyridine an...
Synthetic example 2
[0153] In addition to using 19 g (1.0 molar equivalent) of 2,3,5-tricarboxycyclopentylacetic acid dianhydride as the tetracarboxylic dianhydride, 7.4 g (0.8 molar equivalent) of p-phenylenediamine and 8.5 g (0.2 molar equivalent) of the above were used Except having used the diamine represented by Formula (1-1) as a diamine, it carried out similarly to Synthesis Example 1, and obtained the polyamic-acid solution whose density|concentration is 20weight%. The polyamic acid solution was prepared into an N-methyl-2-pyrrolidone solution with a polymer concentration of 10% by weight, and the measured solution viscosity was 78 mPa·s.
[0154] After diluting the polyamic acid solution with 325 g of N-methyl-2-pyrrolidone, 6.7 g of pyridine and 8.7 g of acetic anhydride were added, and a dehydration ring-closure reaction was performed at 110° C. for 4 hours. After the dehydration ring-closure reaction, the solvent in the system was replaced with a new N-methyl-2-pyrrolidone to obtain 1...
Synthetic example 3
[0156] In addition to using 18 g (1.0 molar equivalent) of 2,3,5-tricarboxycyclopentylacetic acid dianhydride as the tetracarboxylic dianhydride, 5.9 g (0.7 molar equivalent) of p-phenylenediamine and 8.5 g (0.3 molar equivalent) of the above were used Except having used the diamine represented by Formula (1-1) as a diamine, it carried out similarly to Synthesis Example 1, and obtained the polyamic-acid solution whose density|concentration is 20weight%. The polyamic acid solution was prepared into an N-methyl-2-pyrrolidone solution with a polymer concentration of 10% by weight, and the measured solution viscosity was 62 mPa·s.
[0157] After diluting this polyamic acid solution with 325 g of N-methyl-2-pyrrolidone, 6.2 g of pyridine and 8.0 g of acetic anhydride were added, and a dehydration ring-closure reaction was performed at 110° C. for 4 hours. After the dehydration and ring-closure reaction, the solvent in the system was replaced with a new N-methyl-2-pyrrolidone to obt...
PUM
| Property | Measurement | Unit |
|---|---|---|
| surface tension | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More