Patent ID: 6790894
Filing Date: 2004-09-14
Classification: C08C,C08K,C08L,G10K,Y10T

Abstract:
A rubber-based soundproofing material comprising a mixture of:a rubber or a rubber blend comprising non-blended chlorobutyl rubber, bromobutyl rubber or acrylate rubber, or a blend of nitrile rubber or styrene-butadiene rubber with epoxidized natural rubber; an iron/carbon alloy in the form of powder; and additional mixing ingredients comprising an agent selected from the group consisting of vulcanizing agents, accelerators, carbon black, ZnO, and anti-ageing agents; wherein the rubber mixture comprises the following quantitative proportions: Rubber or rubber blend10 to 50% by wt.Iron/carbon alloy85 to 40% by wt.additional mixing ingredientsâ€‚5 to 10% by wt.