Butyl ionomer blends
AssigneeArlanxeo Singapore Pte. Ltd.
InventorsDana K. Adkinson, Jon Bielby
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Abstract
A polymeric compound involves a blend of 50 wt % or greater of a thermoplastic having an average melting point (Tm) of less than 200 ° C. and less than 50 wt % of a butyl rubber ionomer dispersed in a matrix of the thermoplastic, weights based on total weight of the thermoplastic and butyl rubber ionomer. Such blends may exhibit improved physical properties compared to unblended thermoplastic, particularly ultimate elongation and/or damping. The polymeric compounds are useful for forming a variety of articles of manufacture.
Claims20
A polymeric compound comprising a blend, the blend comprising:
- 50 wt % or greater of a thermoplastic polymer having an average melting point (Tm) of less than 300° C.;
- and
- less than 50 wt % of an ionomer dispersed in a matrix of the thermoplastic polymer, the ionomer having phosphorus-based or nitrogen-based ionic moieties and comprising a copolymer derived from at least one isoolefin monomer and at least one multiolefin monomer,
- based on the total weight of the blend.
A process for producing a polymeric compound, the process comprising blending 50 wt % or greater of a thermoplastic polymer having an average melting point (Tm) of less than 300° C. with less than 50 wt % of an ionomer, the ionomer having phosphorus-based or nitrogen-based ionic moieties and comprising a copolymer derived from at least one isoolefin monomer and at least one multiolefin monomer, at a temperature of 300° C. or less but greater than the Tm of the thermoplastic polymer, to disperse the ionomer in a matrix of the thermoplastic polymer, wherein the weights are based on total weight of the thermoplastic polymer and the ionomer.
Dependencies are inferred from the claim text.