Improved elastomeric ethylene/carboxylic acid copolymer, a process for its preparation; vulcanizable compositions containing the copolymer and vulcanized articles prepared therefrom.

摘要

In order to improve the mill release and green strength of an elastomeric copolymer derived from ethylene; alkyl acrylates or vinyl esters of carboxylic acids; and alpha , beta -unsatruated monoor dicarboxylic acids, which copolymer may optionally contain segments derived from carbon monoxide, sulfur dioxide or acrylonitrile, a small quantity of one or more specific chromium (III) compounds are incorporated into the copolymer. A process for the preparation of the copolymer is described and exemplified, and vulcanizable compositions containing the copolymer and vulcanized articles prepared therefrom are described.