| 摘要 |
Polymers having 1,4-diketo functionalities and a carbonyl group concentration of at least 5% of polymer weight can be conveniently cured by heating with a primary diamine or its precursor and a catalytic amount of an acid having a pKa of at most about 3. Cured polymers have good physical properties and are suitable in such applications as, for example hose, tubing, wire coatings, gaskets, and seals. |
