| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat-resistant resin which is transparent, has high heat resistance and is capable of melt molding by heating a polymer comprising units derived from specified monomers in the presence of a solvent under specified conditions. SOLUTION: This resin is obtained by heating A polymer comprising recurring units represented by the formula (wherein R1 and R2 are each a group selected from among hydrogen atoms, methyl groups and ethyl groups) at 150 deg.C or above in the presence of a solvent or by reacting the polymer in the presence of an esterification catalyst or a transesterfication catalyst. The polymer comprising recurring units represented by the formula can be obtained by copolymerizing at least one hydroxy monomer with at least one vinyl monomer so as to obtain a copolymer having the above-mentioned composition. The hydroxy monomer used is desirably ethylα-hydroxymethylacrylate, and the vinyl monomer used is desirably a methacrylic ester or methacrylic acid.
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