Patent ID: 6153686
Filing Date: 2000-11-28
Classification: C08K,C08L,F16F,F16G

Abstract:
An elastomeric composition characterized by:a) from 50 to 95 parts by weight per 100 parts of rubber (phr) of an HNBR modified with either 20-60 phr zinc methacrylate or a combination of 10-60 phr zinc oxide and 20-60 phr methacrylic acid;b) from 5 to 50 phr of an unmodified HNBR;c) from 0.5 to 10 phr of a peroxide cure co-agent;d) from 0.25 to 20 phr of an organic peroxide;e) from 1 to 20 phr of a phenolic resin; andf) from 5 to 50 phr of carbon black;wherein the elastomeric composition contains 20 to 38 phr of zinc methacrylate and has a modulus at 10% elongation of 5.2 to 7.25 MPa.