Reaction #1869144

ord-d84299200b2b4f29be7d2236be2306f3

Reaction equation

O=C1OC(=O)C2C1C1C(=O)OC(=O)C21
CBDA
NC(=O)c1cccc(N)c1
3-ABA
→
NC(=O)c1cccc(N)c1.O=C1OC(=O)C2C1C1C(=O)OC(=O)C21
CBDA 3-ABA

Reactants

O=C1OC(=O)C2C1C1C(=O)OC(=O)C21
CBDA
NC(=O)c1cccc(N)c1
3-ABA

Reagents

None

Solvents

CN1CCCC1=O
NMP
CN1CCCC1=O
NMP

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

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

Procedure

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.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US07498068B2uspto-grants-2009_03