반응 #1869146
ord-00c4384d6b5048e79b0f47e3215b50a5
반응 방정식
PMDA
4-ABA
→
PMDA 4-ABA
반응 조건
상세 조건
See reaction.notes.procedure_details.
후처리
- 1기타to prepare a polyamic acid solution
- 2기타The polymerization reaction
- 3기타uniformly, and the molecular weights were measured in the same manner as in Preparation Example 1 and as a result
- 4기타a weight average molecular weight of 12,695 was obtained
- 5농축the BCS concentration
- 6기타to prepare a liquid crystal aligning agent
실험 절차
20.94 g (0.096 mol) of PMDA, 11.00 g (0.09 mol) of 4-ABA and 3.49 g (0.01 mol) of DAHOB were reacted in 201 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 7,038 and a weight average molecular weight of 12,695 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.