CPC C08L 23/0815 (2013.01) [C08J 3/243 (2013.01); C08J 3/245 (2013.01); C08L 23/16 (2013.01); C08F 2810/20 (2013.01); C08L 9/00 (2013.01); C08L 2205/03 (2013.01)] | 33 Claims |
1. A sequential, double-vulcanization method, comprising the steps of:
(a) mixing first and second immiscible elastomers together with a first additive package comprising component(s) of a first curative system, and optionally component(s) of a first plasticizer system, or component(s) of a first filler system, or a combination thereof;
(b) activating the first curative system to vulcanize the first elastomer in a dispersed phase of the first elastomer to form a partially vulcanized mixture while maintaining melt flowability of the second elastomer in a continuous phase;
(c) optionally, mixing the partially vulcanized mixture together with a second additive package comprising component(s) of a second curative system, component(s) of a second plasticizer system, component(s) of a second filler system, or a combination thereof; and
(d) vulcanizing the second elastomer in the continuous phase by radiation or by activating a chemical curative in the second curative system.
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