| 摘要 |
<p>The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate containing an active alkali metal catalyst residue with a carboxylic acid, but not removing the deactivated catalyst. The invention further relates to a process of deactivating a polycarbonate, by mixing a solid state polycarbonate containing an active alkali metal catalyst and a carboxylic acid, followed by heating the mixture of step at a temperature to melt the mixture and deactivate the alkali metal catalyst, wherein the deactivated catalyst is not removed. The invention further relates to a process of making a polycarbonate, by polymerizing a polycarbonate in the presence of an alkali metal catalyst to produce an activated polycarbonate, and mixing the activated polycarbonate with a carboxylic acid to deactivate the alkali metal catalyst and form a polycarbonate, wherein the deactivated alkali metal catalyst is not removed from the polycarbonate. The invention further relates to products made by the processes described above. The invention further relates to polycarbonates containing an alkali metal carboxylate therein.</p> |
