Peroxide cured thermoplastic vulcanizates comprising butyl rubber
OwnerRui Resendes, Jon Bielby +3inventors
InventorsRui Resendes, Jon Bielby, Judy Pugsley, Rayner Krista, Lorenzo Ferrari
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Abstract
The invention relates to peroxide cured thermoplastic vulcanizates comprising a thermoplastic and an isomonoolefin-multiolefin elastomer, such as butyl rubber. More particularly, the invention relates to peroxide cured thermoplastic vulcanizates wherein the elastomer comprises at least 3.5 mol % of multiolefin in order to facilitate peroxide curing. The thermoplastic vulcanizates according to the present invention are useful in the preparation of shaped articles for high purity applications, such as condenser caps, medical components and fuel cell components.
Claims20
A peroxide cured thermoplastic vulcanizate comprising:
- a) a thermoplastic;
- and,
- b) a non-halogenated elastomer comprising repeating units derived from at least one C4 to C7 isomonoolefin monomer and at least 3.5 mol % of repeating units derived from at least one C4 to C7 multiolefin monomer.
A thermoplastic vulcanizate prepared by:
- a) providing a thermoplastic;
- b) providing a non-halogenated elastomer comprising repeating units derived from at least one C4 to C7 isomonoolefin monomer and at least 3.5 mol % of repeating units derived from at least one C4 to C7 multiolefin monomer;
- c) providing a thermally activated peroxide curing system;
- and,
- d) mixing the thermoplastic and the non-halogenated elastomer together with the peroxide curing system at a temperature of at least 100° C. in order to form the thermoplastic vulcanizate.
Dependencies are inferred from the claim text.