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采用甲醇洗涤聚合产物脂肪族聚碳酸亚丙酯中残余的环氧丙烷、催化剂,使脂肪族聚碳酸亚丙酯中的灰份降低,过量的环氧丙烷脱出。
The residual propylene oxide and the catalyst in the aliphatic polycarbonate of the polymerization product were washed with methanol to reduce the ash in the aliphatic polypropylene carbonate and remove the excess propylene oxide.