Patent ID: 8158721
Filing Date: 2012-04-17
Classification: B29B,C08J,C08L

Abstract:
1. A process for producing a dynamically vulcanized alloy, the alloy comprising at least one isobutylene-containing elastomer and at least one thermoplastic resin, the process comprising the steps of: a) mixing said thermoplastic resin and at least one plasticizer in a first melt processing device to form a resin masterbatch; b) feeding said elastomer, at least one curative, and said resin masterbatch into the feed throat of an extruder, wherein said elastomer and said curative are not pre-mixed together prior to feeding into the extruder; c) mixing said contents of the extruder under dynamic vulcanization conditions to form a dynamically vulcanized alloy, wherein the elastomer is present as a dispersed phase of small vulcanized or partially vulcanized particles in a continuous phase of the thermoplastic resin.