Reinforcing additive
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsFriedrich Thurn, Kurt Burmester, Johannes Pochert, Siegfried Wolff
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Abstract
Sulfur containing organosilicon compounds having the formula: Z - Alk - S.sub.n - Alk - Z in which Z is: ##STR1## where R.sub.1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R.sub.2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy of 5 to 8 carbon atoms or alkylmercapto of 1 to 8 carbon atoms, alk of a divalent aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms and n is a whole number from 2 to 6 are used as reinforcing additives in rubber mixtures containing a silica or silicate filler, and in a given case carbon black; the organosilane is coated on the surface of the silica or silicate filler particles.
Claims15
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula
- Z -- alk -- S.sub.n -- alk -- Z,
- in which Z is ##STR7## wherein R.sub.1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R.sub.2 is alkoxy of 2 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6, and (b) 10 to 250 parts of a siliceous filler.
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula ##STR8## wherein R.sub.2 is alkoxy of 3 or 4 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 4, and
- (b) 10 to 250 parts of a siliceous filler.
A composition comprising (a) 0.1 to 50 parts of an organosilane compound having the formula
- Z -- alk -- S.sub.n -- alk -- Z,
- in which Z is ##STR9## wherein R.sub.1 is alkyl of 1 to 4 carbon atoms, cyclohexyl or phenyl and R.sub.2 is alkoxy of 1 to 8 carbon atoms, cycloalkoxy with 5 to 8 carbon atoms or alkylmercapto with 1 to 8 carbon atoms, alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is a number of 2 to 6 and (b) 10 to 250 parts of a siliceous filler.
Dependencies are inferred from the claim text.