Polyfunctional organosilane for use as coupling agent and...

Details Polyfunctional organosilane for use as coupling agent and... Polyfunctional organosilane for use as coupling agent and...

C - Chemistry, Metallurgy

07

F

C07F 7/08 (2006.01) C08K 5/31 (2006.01) C08K 5/548 (2006.01)

Patent

CA 2425300

The invention concerns monohydroxysilane polysulphide, of formula (F) wherein: the radicals R, identical or different, are hydrocarbon groups comprising preferably 1 to 15 carbon atoms; the radicals R', identical or different, are divalent binding groups preferably comprising 1 to 18 carbon atoms; x is not less than 2. Said hydroxysilane is in particular a bis(propyldimethylsilanol) sulphide. The method for obtaining said hydroxysilane consists in subjecting to alcoholysis and/or hydrolysis a halogenated organosilane, followed by a sulphidizing step. The invention also concerns the use of said hydroxysilane as coupling agent.

Polysulfure de monohydroxysilane, de formule:(F) dans laquelle les radicaux R, identiques ou différents, sont des groupes hydrocarbonés comportant de préférence de 1 à 15 atomes; les radicaux R', identiques ou différents, sont des groupes de liaison divalents comportant de préférence de 1 à 18 atomes de carbone; x est supérieur ou égal à 2. Cet hydroxysilane, par alcoolyse et/ou hydrolyse d'un organosilane halogéné, suivie(s) d'une étape de sulfuration. Utilisation de cet hydroxysilane à titre d'agent de couplage.

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