Method of lubrication using perfluoroalkyl terminated urethanes
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United States of America Patent
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Nov 5, 1996
Issued Date -
N/A
app pub date -
Nov 15, 1995
filing date -
Nov 9, 1992
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Abstract
This invention relates to perfluoroalkyl group terminated urethanes, thiourethanes and ureas of the general formula (R--X--CONH).sub.m A where m is 1, 2 or 3, R is R.sub.f --E and optionally R.sub.1 with the proviso that at least one R is R.sub.f --E, R.sub.f is a perfluoroalkyl group, R.sub.1 is a hydrocarbon group, E is a divalent linking group, X is --O--, --S--, --NR.sub.2 -- and R.sub.2 is H or lower alkyl and A is R.sub.f E or R.sub.1 if m is 1 and a divalent or trivalent linking group if m is 2 or 3 respectively. Compounds of this general formula are useful as solid lubricants or as additives for waxes and resins providing lubricating properties.
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