Process for producing a chemical bond between molding materials based on polyphenylene ethers on the one hand and peroxide vulcanized ep (d)m rubbers on the other hand

Abstract From the Canadian patent

Disclosed is a process for bonding a thermoplastic polyphenylene ether (PPE) containing polymer and a rubber by covulcanization, the process comprising the steps of heating and covulcanizing the PPE-containing polymer and the rubber. The rubber comprises: (a) 100 parts by weight of a rubber component comprising 100-20 wt.% of an EP(D)M rubber and 0.80 wt.% of a styrene-butadiene rubber obtained by emulsion polymerization (b), 100-300 parts by weight of loading material (c) 1-10 parts by, weight of a peroxide vulcanization agent and (d) 0.5-4 parts by, weight of a vulcanization activator. The PPE-containing polymer may contain, in addition to the polyphenylene ether up to 20 parts, by weight …