New sulfured compounds, their preparation and their use as additives for lubricating oils
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United States of America Patent
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May 16, 1995
Issued Date -
N/A
app pub date -
May 10, 1994
filing date -
Dec 28, 1990
priority date (Note) -
Expired
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Abstract
Novel sulfurized compounds, their preparation and use. The compounds are based on the general formula {[R-S.sub.x --(CH.sub.2).sub.n --].sub.z CH.sub.3-z --(CH.sub.2).sub.p --}.sub.2 S.sub.y, in which R is a monovalent hydrocarbon radical having 1 to 30 carbon atoms, optionally functionalized; x is a number equal to or greater than 1; z is an integer equal to 1 or 2; when z=1, n is an integer from 0 to 3 and p is an integer from 0 to 3, with n+p being an integer from 0 to 3; when z=2, n is an integer from 1 to 3 and p is an integer from 0 to 3; and y is a number equal to or greater than 1, at least one of the numbers x and y being strictly greater than 1. The sulphurized compounds can be used as extreme pressure or wear prevention additives in lubricating oils, in particular in oils for gear systems and those used in working metal.
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