| 摘要 |
There are disclosed new unsaturated sulfur-vulcanizable compositions comprising mixtures of at least one unsaturated, substantially amorphous, sulfur-vulcanizable copolymer of ethylene, propylene, and dicyclopentadiene with at least one unsaturated, substantially amorphous, sulfur-vulcanizable copolymer of ethylene, propylene and butadiene. The compositions are unsaturated and vulcanizable to elastomers having excellent mechanical and dynamic properties by means of sulfur-containing recipes, at vulcanization rates appreciably higher than can be obtained with the sulfur-vulcanizable copolymers of ethylene, propylene and dicyclopentadiene alone.
|
