| 摘要 |
A process for producing a heat-resistant polymer consisting predominantly of oxymethylene repeating units, said process comprising submitting a high-molecular-weight polymer consisting predominantly of oxymethylene repeating units to the action concurrently of A. A CAPPING AGENT SELECTED FROM THE GROUP CONSISTING OF ACID ANHYDRIDES, OXYALKYLENE KIESTERS AND LINEAR OXYALKYLENE DIETHERS, AND B. A Lewis acid.
|
