Method of manufacturing of oligo(4-(2-organo-organooxysilylalkyl)cyclohexane-1,2-diyl)bis-oligosulfides
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United States of America Patent
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May 5, 1992
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app pub date -
Jul 15, 1991
filing date -
Jul 13, 1990
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Abstract
The invention relates to a method of manufacturing oligo(4-(2-organo-organooxysilylalkyl)cyclohexane-1,2-diyl)bis-oligosulfides from products of industrial-scale synthesis of 4-(2-organo-organooxysilylalkyl)-1-cyclohexene, without the use of catalysts and at normal pressure. The products produced are used as silane binders and adhesives, and as strengthening additives in silicate filled rubber mixtures. According to the invention, an organosilane of general formula ##STR1## containing an organochlorosilane of general formula ##STR2## where R and R.sup.2 each independently represent an C.sub.1-6 alkyl group; R.sup.1 represents an alkyl, cycloalkyl, or aryl group; n=1 to 3; and m=1 or 2; with the molar ratio of I to II being in the range 1000:1 to 10:1, is reacted directly with sulfur, in a molar ratio of R:sulfur (and/or hydrogen sulfide) of 1:1 to 1:5, at temperatures >150.degree. C.
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