Rubber blends
AssigneeMonsanto Company
InventorAubert Y. Coran
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Abstract
Blends are disclosed of monoolefin rubber with high-diene hydrocarbon rubber in which the monoolefin rubber is in the form of discrete vulcanized particles dispersed in a matrix of unvulcanized high-diene hydrocarbon rubber. The blends can be easily processed, and in a subsequent step, the high-diene hydrocarbon portion cured to give rubber articles having the ozone resistance of the monoolefin rubber and the good physical properties of the high-diene hydrocarbon rubber.
Claims6
A mixture consisting essentially of from 5-80 weight percent of monoolefin rubber and from 95-20 weight percent unvulcanized high-diene hydrocarbon rubber wherein the monoolefin rubber is largely non-crystalline, contains from about 0.1 to 10.0 weight percent, based on the monoolefin rubber, of pendent acid groups and is dispersed in the high-diene hydrocarbon rubber in particulate form with particles which have a weight average diameter below about 10 .mu.m or are substantially all less than about 50 .mu.m in diameter.
Dependencies are inferred from the claim text.