Polyfunctional organosilane usable as a coupling agent and process for the obtainment thereof
AssigneeMichelin Recherche et Technique S.A.
InventorsJean-Claude Tardivat, Laure Belin, Christiane Blanchard
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Abstract
A monohydroxysilane polysulfide of the formula: in which the radicals R, which may be identical or different, are hydrocarbon groups preferably comprising from 1 to 15 carbon atoms; the radicals R′, which may be identical or different, are divalent linking groups preferably comprising from 1 to 18 carbon atoms; x is greater than or equal to 2. This hydroxysilane is in particular a bis-(propyidimethylsilanol) polysulfide. A process for obtaining such a hydroxysilane by alcoholysis and/or hydrolysis of a halogenated organosilane, followed by a sulfuration stage. Use of this hydroxysilane as a coupling agent.
Claims30
A monohydroxysilane polysulfide of the formula (I):
- wherein the radicals R, identical or different, are hydrocarbon groups;
- radicals R′, identical or different, are divalent linking groups;
- x is equal to or greater than 2.
Dependencies are inferred from the claim text.