Abstract: A tire, the tread of which comprising a rubber composition is provided. The rubber composition includes from 35 to 65 phr of an emulsion styrene/butadiene copolymer (E-SBR), from 35 to 65 phr of a polybutadiene (BR); optionally, from 0 to 30 phr of another diene elastomer, from 90 to 150 phr of silica as reinforcing inorganic filler; optionally, less than 20 phr of carbon black; and a plasticizing system. The plasticizing system includes a hydrocarbon resin (A) exhibiting a Tg greater than 20° C. in an amount between 10 and 60 phr, and a plasticizer (B) which is liquid at 20° C. and exhibits a Tg of less than ?20° C. in an amount between 10 and 60 phr, wherein the total amount of plasticizers, A+B, is between 50 and 100 phr.

Abstract: The present invention relates to a tyre, the tread of which comprises a rubber composition comprising at least: from 35 to 65 phr of an emulsion styrene/butadiene copolymer “E-SBR”, referred to as first diene elastomer, the content of trans-1,4-butadienyl units of which is greater than 50% by weight of the total of the butadienyl units; from 35 to 65 phr of a polybutadiene (BR), as second diene elastomer; optionally, from 0 to 30 phr of another diene elastomer referred to as third diene elastomer; from 90 to 150 phr of a reinforcing inorganic filler; a plasticizing system comprising: according to a content A of between 10 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 10 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than ?20° C.; it being understood that A+B is greater than 45 phr.

Abstract: The present invention relates to a tyre, the tread of which comprises a rubber composition comprising at least: from 40 to 100 phr of an emulsion styrene/butadiene copolymer (E-SBR), referred to as first diene elastomer, the content of trans-1,4-butadienyl units of which is greater than 50% by weight of the total of the butadienyl units; optionally, from 0 to 60 phr of another diene elastomer referred to as second diene elastomer; from 90 to 150 phr of a reinforcing inorganic filler; a plasticizing system comprising: according to a content A of between 10 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 10 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than ?20° C.; it being understood that A+B is greater than 45 phr.

Abstract: The present invention relates to a tire the sidewalls of which comprise a vulcanized rubber composition. The composition comprises between 0.5 phr and 10 phr (weight parts per hundred parts of rubber) of at least one polymer which comprises an oxy group defined by the formula —O— and, linked to the one side of the oxy group, at least one polyoxyalkylene block according to the formula (CnH2nO)x, where n is equal to 2 or 3 and x is equal to from 2 through 15 and the at least one block is linked to a hydrogen atom at the chain end, so that the hydrogen atom forms an alcohol function with the terminal oxygen atom of the block. According to the invention, the polymer comprises, linked to the other side of the oxy group, an aliphatic moiety selected from the group consisting of a blend of aliphatic alkyl chains having an average number of carbon atoms of from 10 through 14, and an aliphatic chain which comprises an alkyl chain having 13 carbon atoms.

Abstract: The present invention relates to a tire the sidewalls of which comprise a vulcanized elastomeric composition, and a process for forming an even, varnished film on at least one of said sidewalls. According to the invention, the composition comprises in combination: a polymer containing an oxy radical of the formula —O— therein, the polymer having an alkyl group on one side of the oxy radical and, on the other side of the oxy radical, at least one alkene polyoxide block of the formula (CnH2nO)z joined to a hydrogen atom at the chain end thereof, such that the hydrogen atom and the end terminal oxygen of the alkene polyoxide block form an alcohol function, in the amount of between 0.3 and 5 phr (parts by weight per 100 parts elastomer), and an alkali metal salt of an alkylsulphonic or alkylsulphuric acid, in an amount of between 0.5 and 10 phr.

Abstract: The present invention relates to a tire the sidewalls of which comprise a vulcanized elastomeric composition, and a process for forming an even, varnished film on at least one of said sidewalls.