Thermoplastic elastomer for cold and wet applications

摘要

Thermoplastic elastomer compositions including at least one elastomeric component and at least one semi-crystalline polymer are provided. In particular, thermoplastic elastomer composition characterized by an SRI less than or equal to 1.6 at 10000 Pa s, and less than 4.5 at 1000 Pa s for compositions with TMA at 1000 μm greater than 85° C. are provided. Also provided are articles made from the thermoplastic elastomeric compositions.

主权项

1. A thermoplastic elastomer composition consisting essentially of at least one elastomeric polymer, component A, selected from the group of ethylene/α-olefin interpolymers and propylene/α-olefin interpolymers, at least one semi-crystalline polymer, component B, selected from the group of polypropylene homopolymers, propylene/ethylene copolymers and high density polyethylene, at least one oil, and at least one filler wherein the thermoplastic elastomer composition has a Shape Retention Index (SRI) in the range of from 1.0 to 1.50 at 10,000 Pa·s, and in the range of from 1.6 to 2.5 at 1,000 Pa·s for compositions with a Thermal Mechanical Analysis (TMA Penetration Temperature) greater than 85° C.