RUBBER COMPOSITION MADE FROM A HIGHLY SATURATED DIENE ELASTOMER AND A DITHIOSULFATE SALT

A rubber composition based at least on an elastomer matrix, on a reinforcing filler and on a vulcanization system is provided. The elastomer matrix comprises a highly saturated elastomer and from 0 to less than 30 phr of natural rubber. The highly saturated diene elastomer contains 1,3-diene units a...

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Bibliographic Details
Main Authors TRIGUEL, Aurélie, CROCHET, Aurore, ARAUJO DA SILVA, José-Carlos
Format Patent
LanguageEnglish
French
German
Published 15.12.2021
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DEVICES OR ARRANGEMENTS RELATED TO TYRES
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
TYRE CHANGING OR REPAIRING
TYRE INFLATION
VEHICLE TYRES
VEHICLES IN GENERAL
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Summary:A rubber composition based at least on an elastomer matrix, on a reinforcing filler and on a vulcanization system is provided. The elastomer matrix comprises a highly saturated elastomer and from 0 to less than 30 phr of natural rubber. The highly saturated diene elastomer contains 1,3-diene units and more than 50 mol % of ethylene units. The vulcanization system comprises a dithiosulfate salt of formula MO3S-S-A-S-SO3M in which the symbol A represents an alkanediyl group or a group comprising two or more alkanediyl units, which units are connected in pairs via an oxygen or sulfur atom, via a group of formula -SO2-, -NH-, -NH2+-, -N(C1-C16 alkyl)- or -COO-, or via an arylene or cycloalkylene group, and the symbol M represents a metal atom. The invention makes it possible to achieve an improved compromise between bubble formation in the rubber composition on exiting from the curing presses and its hysteresis.
Bibliography:Application Number: EP20180718617