摘要:
The invention concerns a tyre and a rubber composition for tyre based on at least one isoprene elastomer (for example, natural rubber), one inorganic filler as reinforcing filler (for example, silica), a coupling system binding said reinforcing inorganic filler and the isoprene elastomer, said coupling system comprising in combination: as first coupling agent, a sulphurated silane compound; as second coupling agent, one at least bifunctional organosilicium compound (for example an organosilane or an organosiloxane) capable of being grafted on the elastomer by means of an azo-dicarbonyl functional (-CO-N=N-CO-) group.
摘要:
The invention concerns a tyre and a rubber composition for tyre or semi-finished product for tyre, based on at least one isoprene elastomer (for example, natural rubber), an inorganic filler as reinforcing filler (for example, silica), a coupling system binding said reinforcing inorganic filler and the isoprene elastomer, said coupling system comprising in combination: a monofunctional covering agent (for example, a polyorganosiloxane oil) capable of binding to the functional sites of the inorganic filler surface; and as coupling agent, an organosilicium compound (for example, an organosilane or an organosiloxane) at least bifunctional graftable on the elastomer by means of a functional azo-dicarbonyl (-CO-N=N-CO-) group.
摘要:
.The invention concerns a elastomer composition for use in making tyres, based on at least (i) one diene elastomer, (ii) one inorganic filler as reinforcing filler and (iii) as coupling agent (inorganic filler/diene elastomer), one organosilicon compound having at least two functions capable of being grafted on the elastomer by means of a sulphur-containing group with polybenzothiazyl function, of formula (I): ≡Si -Z-Sx-Bzt,(AA)y, wherein: Z is a linear or branched divalent binding group for binding the polybenzothiazyl group with a silicon atom of the organosilicon compound; x is a whole or fractional number from 2 to 4; Bzt represents the 2-benzothiazole group, optionally substituted; AA represents an oxygenated organic or mineral monoacid or a polyacid, whereof at least one of the acid functions exhibits constant ionization in water, pKa, at 25 °C, higher than 3; y is a whole or fractional number other than 0 and not greater than 3. The invention also concerns tyres and tyre running treads comprising such a composition.
摘要:
The present invention relates to an aircraft tyre, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer is a terpolymer of ethylene, an α-olefin and an unconjugated diene. Such a tyre has a greatly improved landing performance, especially with respect to the wear resistance at very high speed.
摘要:
The present invention relates to an aircraft tyre, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer comprises ethylene units and diene units comprising a carbon-carbon double bond, which units are distributed statistically within the first diene elastomer, the ethylene units representing at least 50 mol% of all of the monomer units of the first diene elastomer. Such a tyre has a greatly improved landing performance, especially with respect to the wear resistance at very high speed.
摘要:
Rubber composition in particular for tyres, based on at least one diene elastomer, one reinforcing filler, one crosslinking system and one antioxidant system, characterized in that said antioxidant system comprises at least two antioxidants 'A' and 'B': A. an N-alkyl-N'-phenyl-para-phenylenediamine corresponding to formula (I): B. a 4,4'-bis(alkylamino)triphenylamine corresponding to formula (II): in which formulae, R1, R2 and R3, which may be identical or different, are each a linear or branched alkyl group containing from 1 to 12 carbon atoms or a cycloalkyl group containing from 5 to 8 carbon atoms, wherein the A/B weight ratio is between 0.2 and 5.0. Such an antioxidant system confers on the composition of the invention better long-term resistance to fatigue and to the propagation of cracks.
摘要:
Rubber composition in particular for tyres, based on at least one diene elastomer, one reinforcing filler, one crosslinking system and one antioxidant system, characterized in that said antioxidant system comprises at least two antioxidants 'A' and 'B': A. an N-alkyl-N'-phenyl-para-phenylenediamine corresponding to formula (I): B. a 4,4'-bis(alkylamino)triphenylamine corresponding to formula (II): in which formulae, R1, R2 and R3, which may be identical or different, are each a linear or branched alkyl group containing from 1 to 12 carbon atoms or a cycloalkyl group containing from 5 to 8 carbon atoms, wherein the A/B weight ratio is between 0.2 and 5.0. Such an antioxidant system confers on the composition of the invention better long-term resistance to fatigue and to the propagation of cracks.