反应详情

Into a four-necked flask equipped with a stirrer, reflux condenser, thermometer and gas-inlet tube were introduced 600 parts of ethyl acetate which was heated and kept at 75° to 78° C. under a stream of nitrogen gas. A monomer mixture composed of 249 parts of monobutyl maleate, 151 parts of styrene and 4 parts of di-tert-butyl peroxide as a polymerization initiator was added dropwise into the flask taking about 2 hours to form a polymerization mixture which was agitated for further 2 hours at the same temperature to effect copolymerization of the monomers. After completion of the polymerization reaction, the polymerization mixture was freed from the solvent by stripping under reduced pressure to give a solid copolymeric resin of maleic acid and styrene.

1. customInto a four-necked flask equipped with a stirrer
2. temperaturereflux condenser
3. temperaturewas heated
4. customkept at 75° to 78° C. under a stream of nitrogen gas
5. additionwas added dropwise into the flask
6. customto form a polymerization mixture which
7. customcopolymerization of the monomers
8. customAfter completion of the polymerization reaction