Damping thermoplastic elastomers
AssigneePolyOne Corporation
InventorJiren Gu
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Abstract
A thermoplastic elastomer compound includes styrenic block copolymer that is high vinyl styrene-(ethylene/butylene)-styrene block copolymer and high softening point tackifier. The high vinyl styrene-(ethylene/butylene)-styrene block copolymer has a Copolymer Tan Delta Peak Temperature and the thermoplastic elastomer compound has a Compound Tan Delta Peak Temperature. The Compound Tan Delta Peak Temperature is greater than the Copolymer Tan Delta Peak Temperature. The thermoplastic elastomer compound exhibits useful damping properties at or above room temperature while also advantageously possessing improved stability for processing and/or applications at high temperatures and upon exposure to weathering.
Claims15
A thermoplastic elastomer compound comprising:
- (a) high vinyl styrene-(ethylene/butylene)-styrene block copolymer having a Copolymer Tan Delta Peak Temperature;
- and
- (b) tackifier having a softening point of at least about 80° C. according to ASTM 6493;
- and
- wherein the compound has a Compound Tan Delta Peak Temperature, and the Compound Tan Delta Peak Temperature is greater than the Copolymer Tan Delta Peak Temperature.
Dependencies are inferred from the claim text.