摘要:
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.
摘要:
.The invention concerns a elastomer composition for use in making tyres, based on at least (i) one diene elastomer, (ii) one inorganic filler as reinforcing filler and (iii) as coupling agent (inorganic filler/diene elastomer), one organosilicon compound having at least two functions capable of being grafted on the elastomer by means of a sulphur-containing group with polybenzothiazyl function, of formula (I): ≡Si -Z-Sx-Bzt,(AA)y, wherein: Z is a linear or branched divalent binding group for binding the polybenzothiazyl group with a silicon atom of the organosilicon compound; x is a whole or fractional number from 2 to 4; Bzt represents the 2-benzothiazole group, optionally substituted; AA represents an oxygenated organic or mineral monoacid or a polyacid, whereof at least one of the acid functions exhibits constant ionization in water, pKa, at 25 °C, higher than 3; y is a whole or fractional number other than 0 and not greater than 3. The invention also concerns tyres and tyre running treads comprising such a composition.
摘要:
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.