Thermoplastic elastomer composition

Abstract

A thermoplastic elastomer composition is free from halogens such as bromine, and is comparable or superior in tensile characteristic to a conventional thermoplastic elastomer composition containing a brominated alkylphenol formaldehyde resin as a crosslinking agent. The composition contains an EPDM containing 5-ethylidene-2-norbornene as a diene component, 75 to 300 mass % of an alkylphenol formaldehyde resin having methylol groups at opposite molecular terminals thereof as a crosslinking agent based on the diene amount of the EPDM, 0.7 to 3 mass % of a strong Bronsted acid as a catalyst based on the amount of the alkylphenol formaldehyde resin, and a thermoplastic resin.

Dependencies are inferred from the claim text.