Use of a combination of silicone compounds as a coupling...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 21/00 (2006.01) B60C 1/00 (2006.01) C08K 3/36 (2006.01) C08K 5/54 (2006.01)

Patent

CA 2239103

The use of an effective amount of a special combination of silicone compounds consisting of a combination of: at least one functionalised polyorganosiloxane (POS) comprising, per molecule, at least one functional siloxyl unit (MO1) capable of being chemically and/or physically bound to surface hydroxylated sites on the silica particles; and at least one functionalised organosilane (OS) comprising, per molecule, at least one functional group (G1) capable of being chemically and/or physically bound to the MO1 units and/or the hydroxylated sites on the silica particles, as well as at least one other functional group (G2) capable of being chemically and/or physically bound to the elastomeric chains; as a silica-elastomer coupling agent in compositions of one or more natural or synthetic elastomers including a siliceous material as the reinforcing filler, for the production of articles consisting of one or more elastomers, is disclosed.

Utilisation d'une quantité efficace d'une association particulière de composés silicones consistant dans la combinaison: d'au moins un polyorganosiloxane fonctionnalisé (en abréviation: POS) comportant, par molécule, au moins un motif siloxyle fonctionnel (en abréviation: MO1) capable de se lier chimiquement et/ou physiquement avec les sites hydroxylés de surface des particules de silice; et d'au moins un organosilane fonctionnalisé (en abrévation: OS) comportant, par molécule, au moins un groupe fonctionnel (en abréviation: G1) capable de se lier chimiquement et/ou physiquement avec les motifs MO1 et/ou les sites hydroxylés des particules de silice et au moins un autre groupe fonctionnel (en abréviation: G2) capable de se lier chimiquement et/ou physiquement aux chaînes d'élastomère(s), comme agent de couplage silice- élastomère dans les compositions d'élastomère(s) naturel(s) ou synthétique(s) comprenant une matière siliceuse à titre de charge renforçante, destinées à la fabrication d'articles en élastomère(s).

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