Tyre tread comprising an emulsion styrene/butadiene copolymer.

摘要

The present invention relates to a tire tread comprising a crosslinkable rubber composition which comprises at least one emulsion copolymer of styrene and butadiene and to a process for improving the wear resistance of such a tread. The invention applies to a tread comprising a majority proportion of a reinforcing white filler as reinforcing filler. A tire tread according to the invention includes a crosslinkable rubber composition which comprises at least one elastomeric emulsion copolymer of styrene and butadiene and a reinforcing filler having a major proportion thereof being a reinforcing white filler. The reinforcing white filler is present in the composition in a quantity of greater than or equal to 40 phr. This composition is such that the copolymer comprises an emulsifier in an amount ranging from 1 to 3.5 phr (parts by weight per 100 parts of the elastomeric copolymer).