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US3939118A Process for removing contaminants from polycarbonate solutions 失效
从聚碳酸酯溶液中除去污染物的方法

Process for removing contaminants from polycarbonate solutions
摘要:
The contaminating inorganic compounds such as alkali metal salts or alkali metal hydroxides which remain in a polycarbonate solution prepared by reacting phosgene with a dihydroxy-aryl compound are removed by contacting the solution with a molecular sieve.
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