Elastomer blends for tire components
AssigneeExxon Research & Engineering Co.
InventorNeil F. Newman
Life of this patent
Estimating the term…
Abstract
Tire flexing components having improved ozone and flex and weather resistance are prepared by blending a general purpose rubber with a chlorinated EPDM containing about 0.1 to about 0.9 wt. % chlorine. The products so formed are useful for tire components that are subject to severe flexing such as coverstrips and sidewalls.
Claims9
A method for improving the weather resistance, flex and ozone resistance of tire flexing components prepared from blends of highly unsaturated rubbers, said blends comprising 25 to 75% by weight of natural rubber, the balance of said blends being styrene-butadiene rubber or polybutadiene rubber, which comprises incorporating into the tire flexing composition about 25 to about 40 parts per hundred based on the highly unsaturated rubber blend of a chlorinated EPDM containing 0.1 to 0.9 weight % chlorine.
The method of claim 3 wherein the chlorinated EPDM is incorporated into the composition at about 25 to about 30 phr.
Dependencies are inferred from the claim text.