abstract |
Disclosed is a method for producing a polycarbonate containing a plant-derived raw material, which has excellent mechanical strength, heat resistance, a small refractive index, a large Abbe number, a small birefringence and excellent transparency, and a molded product thereof. To do. A method for producing a polycarbonate comprising a step of reacting a dihydroxy compound containing at least a dihydroxy compound having at least one linking group —CH 2 —O— in the molecule with a carbonic acid diester in the presence of a polymerization catalyst. A process for producing a polycarbonate in which the formic acid content of a dihydroxy compound having at least one linking group —CH 2 —O— in the molecule is less than 20 ppm, dihydroxy having at least one linking group —CH 2 —O— in the molecule A molded article comprising a polycarbonate containing a structural unit derived from a compound, wherein the polycarbonate has an Abbe number of 50 or more and a 5% heat loss temperature of 340 ° C. or more, or a composition of the polycarbonate. [Selection] Figure 1 |