| 摘要 |
The purpose of the present invention is to provide a method for manufacturing polycarbonate in which polycarbonate having outstanding color matching, outstanding thermal properties, particularly retention stability during molding, and outstanding water resistance can be effectively and easily manufactured. In the method for manufacturing polycarbonate of the present invention, an aromatic dihydroxy compound and a carbonic acid ester are subjected to melt condensation polymerization in the presence of a catalyst composed of (a) an aliphatic amine with 24-60 carbon atoms, and (b) an alkali metal compound and/or alkaline earth metal compound. The (a) aliphatic amine having 24-60 carbon atoms should preferably be an aliphatic tertiary amine and be used in the amount of 1x6-6-1x10-1 moles for each mole of the aromatic dihydroxy compound, and the (b) alkali metal compound and/or alkaline earth metal compound should be used in an extremely minute specified amount.
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