Abstract: A rubber composition is based on 20 to 100 phr of a copolymer of ethylene, of a first 1,3-diene which is 1,3-butadiene, isoprene or a mixture thereof, and of a second 1,3-diene of formula CH2?CR-CH?CH2, the symbol R representing a hydrocarbon chain having 3 to 20 carbon atoms, the ethylene units in the copolymer representing more than 50 mol % of the monomer units of the copolymer; 0 to 80 phr of at least one diene elastomer having a weight content of diene units of greater than 50%; 10 to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature above 20° C. and/or at least one plasticizer that is liquid at 23° C.; a reinforcing filler; and a crosslinking system. Also disclosed is an elastomer laminate and a rubber article, in particular a pneumatic or non-pneumatic tire.

Abstract: An elastomer laminate comprises at least two adjacent layers, the first layer consisting of a composition based on 20 to 100 phr of at least one copolymer comprising ethylene units and units of a formula CH2?CR—CH?CH2, the ethylene units in the copolymer representing more than 50 mol % of the monomer units, R representing a hydrocarbon chain having 3 to 20 carbon atoms, 0 to 80 phr of at least one diene elastomer having a weight content of diene units of greater than 50%, 10 to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature above 20° C. and/or at least one plasticizer that is liquid at 23° C., a reinforcing filler, and a crosslinking system, and the second layer consisting of a composition based on a diene elastomer having a weight content of diene units of greater than 50% and a crosslinking system.

Abstract: A rubber composition is based on at least one non-functionalized first diene elastomer E1 having a glass transition temperature TgE1, one functionalized second diene elastomer E2 having a glass transition temperature TgE2, a reinforcing filler capable of interacting with the functionalized diene elastomer E2 and a crosslinking system, in which: the glass transition temperature TgE1 is above or equal to -50° C., the glass transition temperature TgE2 satisfies the mathematical relationship TgE2 ? TgE1-23° C., and the content of the non-functionalized diene elastomer E1 is greater than or equal to 50 phr. A tread and/or a pneumatic or non-pneumatic tire may comprise at least one composition as defined above.

Abstract: A tire for an agricultural vehicle, and in particular its tread, which aims to increase its traction capability in the field on loose ground. The tire having a nominal section width L, a central tread portion (211), centred on an equatorial plane (E) of the tire and having an axial width L1 at least equal to 0.15*L and at most equal to 0.35*L, has circumferentially distributed tread pattern elements (221), which are separated in pairs by transverse voids (231) forming an angle at least equal to 30° with the circumferential direction (XX?), and the central tread portion (211) has a local volumetric void ratio TEVL1, defined as being the ratio between the volume VC1 of the transverse voids (231) and the total volume V1 of the central tread portion (21), between the bearing surface (24) and the tread surface (25), is at most equal to 15%.

Abstract: A rubber compound having at least two glass transition temperatures Tg1 and Tg2 is based on at least two rubber compositions C1 and C2, C1 comprising at least one elastomer E1 with Tg1, C2 comprising at least one elastomer E2 with Tg2 and a reinforcing filler, E2 being different from E1, where Tg1 is above or equal to -50° C., the rubber compound satisfies Tg1-Tg2 ? 23° C. and has a loss factor profile exhibiting the change in tan ? as a function of the temperature in °C. over a range extending from -80° C. to 60° C. at a frequency of 10 Hz and a constant stress of 0.7 MPa and exhibiting one or more peaks, such that all the tan ? peaks present at a temperature above Tg1 have a width at half height less than or equal to 23° C.; and E1 is predominant.

Abstract: A rubber caterpillar track (1) has an interior surface (5) intended to collaborate with drive means, and a tread (2) comprising a tread pattern (21) formed of N relief elements made of an elastomeric material which are intended to come into contact with the ground in order to give the caterpillar track (1) traction, each element of the tread pattern (21) comprising a leading face (212) intended to transmit force, characterized in that: a. the leading face of n tread pattern elements, the number n being at least equal to 0.2×N, is inclined with respect to a direction (OZ) normal to the bearing surface by an angle ? comprised between 45 degrees and 75 degrees; and b. the tread is notably made of an elastomeric material of which the shore A hardness, measured in accordance with the standard ASTM D2240, is greater than or equal to 65.

Abstract: A tread (2) for the driven axle of an agricultural vehicle having tread pattern elements (21, 41) extending radially towards the outside from a bearing surface (22). The tread pattern elements have, in the central part of the tread, a series of blocks (41) juxtaposed with one another in the longitudinal direction and separated by transverse cuts (42), and having, in the rolling direction (15), a leading face, a contact face and a trailing face. The leading face having a radial height greater than the radial height of the trailing face. The contact face being oriented at an angle ? with respect to radial direction Z, ? being between 93 and 105° and radial depth PR of the transverse cuts (42) being at least 50% of the radial height of the leading face, the width of the blocks representing at least 15% of the width of the tread.

Abstract: A tread (2) for a driven axle of an agricultural vehicle, having a tread pattern elements (21) extending radially towards the outside from a bearing surface (22), the tread pattern elements having a total number N of tread pattern blocks (21) that are separated axially from one another, the tread pattern blocks having a contact face (211), a leading face (212) and a trailing face (213), the leading face being inclined at an angle ? towards the rear with respect to the radial direction in the rolling direction (15) of the tread, the tread having a number n of tread pattern blocks in the case of which the angle ? is between 50 degrees and 75 degrees, the number n being at least equal to 0.2×N.