Process for the production of sulfur containing organosilicon compounds
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsHans-Dieter Pletka, Rudolf Michel
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Abstract
Compounds are prepared having the formula Z--Alk--S.sub.x --Alk Z I wherein Z is ##STR1## where R.sup.1 is an alkyl group of 1 to 4 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms or phenyl, R.sup.2 is an alkoxy group of 1 to 8 carbon atoms, a cycloalkoxy group of 5 to 8 carbon atoms or phenoxy, Alk is a divalent hydrocarbon chain of 1 to 10 carbon atoms which can be interrupted with one or two --O--, --S-- or --NH group, and X is a number of 2 to 6 by reacting a compound having the formula Ii. z--alk--SH with sulfur. Some of the compounds are novel and some are old, e.g., in Meyer-Simon U.S. Pat. No. 3,842,111. The compounds are useful as bonding agents in sulfur vulcanizable rubbers.
Claims14
A process for the production of sulfur containing organo silicon compounds corresponding to the general formula
- Z -- Alk -- S.sub.x -- Alk -- Z (I)
- in which Z represents the group ##STR8## in which R.sup.1 is an alkyl group containing 1 to 4 carbon atoms, a cycloalkyl radical with 5 to 8 carbon atoms or the phenyl radical, and
- R.sup.2 represents an alkoxy group with a linear or branched carbon chain with 1 to 8 carbon atoms, the methoxyethoxy group, a cycloalkoxy group with 5 to 8 carbon atoms or the phenoxy group, each R.sup.1 andR.sup.2 optionally being the same or different,
- Alk represents either a divalent hydrocarbon radical with 1 to 10 carbon atoms in the carbon chain or such a hydrocarbon radical interrupted once or twice by --O--, --S-- or --NH--,
- x is a number from 2.0 to 6.0, comprising reacting a compound corresponding to the general formula
- Z -- Alk -- SH (I)
- with elemental sulfur.
A sulfur containing organosilicon compound corresponding to the general formula ##STR10## where Alk is a divalent hydrocarbon radical with 1 to 10 carbon atoms in the claim or a divalent hydrocarbon radical with 1 to 10 carbon atoms which is interrupted once or twice by --O--, --S-- or --NH-- and x is a number from 2.0 to 6.0.
Dependencies are inferred from the claim text.