Methyl Methacrylate → Diethyl carbonate ethylene carbonate

Temperature

40 °C

60.0 g of methyl methacrylate, 16.0 g of 3-ethyl-3-oxetanylmethyl methacrylate, 4.0 g of 3,4-epoxycyclohexylmethyl acrylate, 226.6 g of ethylene carbonate and 0.15 g of N,N′-azobisisobutyronitrile were placed in a three-necked flask equipped with a reflux condenser, and mixed for 30 minutes under stirring while introducing nitrogen gas. Temperature was elevated to 70° C. to conduct radical polymerization for 8 hours. The reaction mixture thus obtained was cooled to 40° C. 226.6 g of diethyl carbonate and 0.15 g of N,N′-azobisisobutyronitrile were added to the reaction mixture, and the resulting mixture was again heated to 70° C. to further conduct radical polymerization for 8 hours. The reaction mixture thus obtained was cooled to 40° C. to obtain an ethylene carbonate/diethyl carbonate mixed solvent solution (concentration: 15% by weight) of the crosslinkable polymer B.

1. customequipped with a reflux condenser
2. additionmixed for 30 minutes
3. additionwhile introducing nitrogen gas
4. customwas elevated to 70° C.
5. custompolymerization for 8 hours
6. customThe reaction mixture thus obtained
7. temperaturethe resulting mixture was again heated to 70° C. to further conduct radical polymerization for 8 hours
8. customThe reaction mixture thus obtained
9. temperaturewas cooled to 40° C.

ORD record

ord-17390a15b9e9460c997083e9c4f8cf4e

Source dataset

uspto-grants-2014_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08911648B2