Synthetic lubricant
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United States of America Patent
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Apr 21, 1981
Grant Date -
N/A
app pub date -
Sep 10, 1979
filing date -
Sep 10, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A low viscosity synthetic lubricant is prepared by polymerizing 1-butene to an oligomer containing a number average of about 8 to 18 carbon atoms and copolymerizing the oligomer with an alpha-monoolefin having 8 to 18 carbon atoms to produce a copolymer having an average of about 20 to 40 carbon atoms. Both polymerization reactions are catalyzed by a combination of boron trifluoride and a proton donor promoter. The synthetic lubricant is preferably stripped to remove lower boiling components, such as oligomers having 20 carbon atoms or less, and optionally hydrogenated for improved stability.
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