| 摘要 |
<p>7 In the process of converting a poly (tetramethylene ether) diester to poly(tetramethylene ether) glycol by catalytic alcoholysis, using an alkali metal hydroxide or alkoxide as the catalyst, contamination of the polymer product can be reduced by reacting the catalyst with an acid after the alcoholysis reaction is complete, and then removing the reaction product from the reaction mass.</p> |
