| abstract |
A process for producing an aromatic-aliphaticncopolycarbonate which is excellent in impact resistance andnheat resistance and has large Abbe number, smallnphotoelasticity constant, and excellent color tone. Thenprocess comprises conducting polycondensation in a reactor madenof a stainless steel comprising at least 12 wt% nickel, at leastn22 wt% chromium, and at least 50 wt% iron. |