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US 6,806,306 B2Granted
Low temperature, highly chemically resistant thermoplastic vulcanizates based on perfluroether elastomers
AssigneeFreduenberg-NOK General Partnership
InventorsCraig A. Chmielewski, Paul J. Hochgesang
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Abstract
A fluorine containing thermoplastic vulcanizate composition includes a continuous phase of at least one melt formable thermoplastic resin and a discrete phase of a vulcanized perfluoroether elastomer. The perfluoroether elastomer comprises between 10 and 80 weight percent based on the total amount of the continuous phase and the disperse phase combined.
Claims15
A thermoplastic vulcanizate composition comprising:
- a continuous phase of at least one melt formable thermoplastic resin;
- and
- a discrete phase of a vulcanized perfluoroether elastomer.
A process for producing a fluorine containing thermoplastic vulcanizate composition, which comprises:
- melt blending at least one melt formable thermoplastic fluorocarbon resin and with a perfluoroether based elastomer to form a mixture, wherein the resin and elastomer are melt blended at a temperature higher than a melting temperature of the resin;
- and
- vulcanizing the mixture while maintaining the shear mixing forces.
Dependencies are inferred from the claim text.