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US 5,397,832 AGranted
Thermoplastic elastomer having improved low temperature properties
AssigneeAdvanced Elastomer Systems, L.P.
InventorMaria D. Ellul
Life of this patent
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Abstract
Thermoplastic elastomers having improved low temperature properties are provided by incorporating suitable low molecular weight ester plasticizer into blends of crystalline polyolefin homopolymer or copolymer and olefinic rubber. The rubber component of the composition is at least partially cured.
Claims12
A method for the preparation of thermoplastic elastomers comprising the steps of
- (a) blending from about 90 to about 10 wt % of an olefinic rubber with from about 10 to about 90 wt % of a thermoplastic, crystalline polyolefin homopolymer or copolymer at a temperature above the melting point of the polyolefin,
- (b) adding to the blend from about 1 to about 250 phr of a low molecular weight aliphatic ester or ether ester plasticizer which is compatible with both the rubber and the polyolefin, and
- (c) crosslinking the rubber in the resulting mixture.
Dependencies are inferred from the claim text.