| 摘要 |
<p>The present invention relates to a method for the preparation of polycarbonate comprising preparing a polycarbonate by a melt process by reacting a diphenol and a diaryl carbonate in the presence of a catalytically effective amount of one or more alkali metal salts of oxoacids of sulfur, like sodium metabisulfite, bisulfite, sulfite, dithionate or thiosulfate.</p> |
