Patent ID: 7872075

Claim:
A method of preparing a thermoplastic vulcanizate, the method comprising: continuously dynamically vulcanizing, in a continuous mixing reactor: a rubber consisting essentially of an olefinic elastomeric copolymer, and a thermoplastic resin, wherein the dynamic vulcanization is effected solely with a single cure system that consists of: an organic peroxide cure agent, and a coagent-wetted carrier consisting essentially of: (1) a multi-functional acrylate coagent selected from the group consisting of diethylene glycol diacrylate, trimethylolpropane triacrylate (TMPTA), ethoxylated trimethylolpropane triacrylate, propoxylated trimethylolpropane triacrylate, propoxylated glycerol triacrylate, pentaerythritol triacrylate, bistrimethylolpropane tetraacrylate, pentaerythritol tetraacrylate, ethoxylated pentaerythritol tetraacrylate, ethoxylated pentaerythritol triacrylate, cyclohexane dimethanol diacrylate, ditrimethylolpropane tetraacrylate, or combinations thereof, a multi-functional methacrylate coagent selected from the group consisting of ethylene glycol dimethacrylate, butanediol dimethacrylate, butylene glycol dimethacrylate, diethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, allyl methacrylate or combinations thereof, or both a multi-functional acrylate and multi-functional methacrylate coagent, and (2) silica, silicates or a combination thereof.