反应 #1869144

反应方程式

CBDA

3-ABA

→

CBDA 3-ABA

溶剂

NMP

NMP

反应条件

后处理

1. 1
   其他to prepare a polyamic acid solution
2. 2
   其他The polymerization reaction
3. 3
   其他uniformly, and the molecular weights were measured in the same manner as in Preparation Example 1 and as a result
4. 4
   其他a weight average molecular weight of 45,429 was obtained
5. 5
   浓缩the BCS concentration
6. 6
   其他to prepare a liquid crystal aligning agent

实验过程

19.22 g (0.098 mol) of CBDA and 12.22 g (0.1 mol) of 3-ABA were reacted in 283 g of NMP at room temperature for 5 hours to prepare a polyamic acid solution. The polymerization reaction proceeded easily and uniformly, and the molecular weights were measured in the same manner as in Preparation Example 1 and as a result, a solution of a polyamic acid having a number average molecular weight of 28,114 and a weight average molecular weight of 45,429 was obtained. Further, to this solution, poor solvents BCS and NMP were added so that the polyamic acid concentration would be 5 mass % and the BCS concentration would be 20 mass % to prepare a liquid crystal aligning agent.

来源