C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/5425 (2006.01) C08K 5/54 (2006.01) C08L 21/00 (2006.01)
Patent
CA 2395904
The invention relates to a rubber composition with a base consisting of at least one dienic elastomer, a white filler which serves as a reinforcing filler, a coupling agent (white filler/elastomer) which can be at least bifunctionally grafted onto the elastomer with a function X, said function X consisting of an ester function of an unsaturated acid .alpha.-.beta. with a carbonyl group in position .gamma., of general formula (X), wherein R, R?1¿ and R?2¿ are identical or different and each represent a monovalent hydrocarbonated radical or in the case of R?1¿ and R?2¿, a hydrogen atom. The invention also relates to a tyre or a semi-finished product, especially a tread, for a tyre comprising a rubber composition of the inventive type.
Composition de caoutchouc a base d'au moins un élastomère diénique, une charge blanche ä titre de charge renforçante, un agent de couplage (charge blanche/élastomère) au moins bifonctionnel greffable sur l'élastomère au moyen d'une fonction X, ladite fonction X consistant en une fonction ester d'un acide .alpha.-.beta. insaturé porteur en position .gamma. d'un groupe carbonyle et ayant pour formule générale (X) dans laquelle R, R1 et R2, identiques ou différents, représentent chacun un radical hydrocarboné monovalent, ou, dans le cas de R1 et R2, un atome d'hydrogène également. Pneumatique ou produit semi-fini, notamment bande de roulement, pour pneumatique comportant une composition de caoutchouc conforme a l'invention.
Mignani Gerard
Pagano Salvatore
Thonier Christel
Michelin Recherche Et Technique S.a.
Robic
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