| abstract |
PROBLEM TO BE SOLVED: To provide a production method capable of obtaining a thermoplastic resin excellent in transparency and heat resistance and less colored. SOLUTION: In the method of polymerizing a radically polymerizable monomer component, after polymerization using a solvent containing alcohol, a volatile component containing alcohol is distilled off and removed under heating and reduced pressure, or After polymerization, alcohol is added, and then volatile components containing alcohol are distilled off under reduced pressure under heating to separate. As a result, it is possible to sufficiently prevent coloring during polymerization or heating after polymerization by using a large amount of alcohol, and further, it is possible to reduce the amount of alcohol remaining in the resin, so that heat resistance is reduced. Etc. can be prevented. Further, the above monomer component is N Particular preference is given to including substituted maleimides and methacrylic esters. |