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 an elastomer matrix predominantly comprising a highly saturated diene elastomer, a reinforcing filler, a vulcanization system, and a plasticizing system comprising a hydrocarbon resin having a Tg of between 50° C. and 120° C., an aliphatic proton content of greater than or equal to 95% and a number-average molar mass (Mn) of less than or equal to 800 g/mol; the highly saturated diene elastomer is a copolymer of ethylene and of a 1,3-diene in which the ethylene units represent at least 50 mol % of the monomer units of the copolymer.

Abstract: The invention relates to a rubber composition having improved tear strength. This composition is based on 20 to 50 phr of copolymer containing ethylene units and units of a 1,3-diene of formula CH2?CR—CH?CH2, the symbol R representing a hydrocarbon chain containing 3 to 20 carbon atoms, the ethylene units in the copolymer representing between 50 mol % and 95 mol % of the monomer units of the copolymer; 50 to 80 phr of polyisoprene comprising a content by weight of cis-1,4-bonds of at least 90% of the weight of the polyisoprene; a reinforcing filler; from 0.2 to 0.9 phr of zinc oxide; and a vulcanization system. The invention also relates to rubber articles comprising a composition according to the invention, in particular pneumatic tyres, at least one sidewall of which comprises a composition according to the invention.

Abstract: Rubber compositions having improved rolling resistance and wet grip are based on at least one elastomer matrix comprising at least one copolymer containing ethylene units and 1,3-diene units, the molar fraction of ethylene units in the copolymer being within a range extending from more than 50% to 95%, the copolymer not containing any unit of a 1,3-diene of formula CH2?CR—CH?CH2, the symbol R representing a hydrocarbon chain having 3 to 20 carbon atoms; a polar liquid plasticizer having a Tg below ?80° C.; at least 30 phr of silica; at least one agent for coupling the silica to a diene elastomer; and a crosslinking system. Rubber articles, in particular pneumatic or non-pneumatic tires, may comprise the rubber compositions, especially in the tread of such tires.

Abstract: A rubber composition that comprises a highly saturated diene elastomer which is a copolymer of ethylene and of a 1,3-diene containing ethylene units which represent more than 50 mol % of the monomer units of the copolymer, a vulcanization system, a silane coupling agent and a reinforcing filler that contains a silica made hydrophobic prior to its use in the rubber composition by treatment with a blocked or non-blocked mercaptosilane, and a hydrophilic silica, is provided. Such a composition has improved curing properties whilst maintaining the compromise of property between stiffness and hysteresis.

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 exhibiting a good performance compromise between resistance to mechanical attacks and hysteresis, is based on at least one elastomer matrix predominantly comprising at least one isoprene elastomer, a reinforcing filler, cellulose pulp, and a crosslinking system, wherein the cellulose pulp has a length within a range extending from 1.1 to 4.9 mm A rubber article, in particular a pneumatic or non-pneumatic tire for off-road vehicles, a rubber caterpillar track and a conveyor belt comprising the composition are disclosed.

Abstract: A rubber composition is based on at least an elastomer matrix comprising more than 50 phr of a copolymer containing ethylene units and 1,3-diene units, the ethylene units in the copolymer representing more than 50 mol % of the monomer units of the copolymer; a 1,3-dipolar compound corresponding to the formula “Q-Sp-B” in which Q comprises a dipole containing at least and preferably one nitrogen atom, Sp, which is preferably divalent, is an atom or a group of atoms connecting Q to B, and B comprises a specific imidazole ring; a filler comprising predominantly silica and a crosslinking system comprising at least one radical polymerization initiator, and a co-crosslinking agent selected from the group consisting of (meth)acrylate compounds, maleimide compounds, allyl compounds, vinyl compounds and mixtures thereof.

Abstract: A rubber composition is based on at least: an elastomer matrix comprising more than 50 phr of a copolymer containing ethylene units and 1,3-diene units, the ethylene units in the copolymer representing more than 50 mol % of the monomer units of the copolymer; a specific 1,3-dipolar compound; a filler comprising predominantly silica and a crosslinking system comprising at least one radical polymerization initiator, and a co-crosslinking agent selected from the group consisting of (meth)acrylate compounds, maleimide compounds, allyl compounds, vinyl compounds and mixtures thereof.

Abstract: The method for managing a shut down of a boiler having a duct and heat exchanging components is provided. The heat exchanging component having tubed heat exchanging surfaces within the duct and headers outside the duct. The method includes regulating the temperature of the headers during shut down to a temperature close to the one expected for the steam moving from the tubed heat exchanging surfaces into the headers at a starting up following the shut down.

Abstract: The method for managing a shut down of a boiler having a duct and heat exchanging components is provided. The heat exchanging component having tubed heat exchanging surfaces within the duct and headers outside the duct. The method includes regulating the temperature of the headers during shut down to a temperature close to the one expected for the steam moving from the tubed heat exchanging surfaces into the headers at a starting up following the shut down.