Patent ID: 7521501

Claim:
A TPV premix comprising the following components: an EAODM, an encapsulated cure system, and an oil, and prepared by a process comprising the steps of: (a) preparing an encapsulated cure system, by feeding at least one thermoplastic polymer and a vulcanizing agent, optionally with one or more additives, into a melt mixing device, and melt mixing the thermoplastic polymer, vulcanizing agent and optional additives, until uniformly mixed, to form a encapsulated cure system, and collecting the encapsulated cure system; (b) dry blending the encapsulated cure system and free flowing EAODM particles, and optionally, one or more additives or thermoplastic polymers, to form an EAODM/encapsulated cure system; (c) dry blending the EAODM/encapsulated cure system with an oil, and optionally with an additional partitioning agent or additives, to form the TPV premix.