Production of borated ashless dispersants
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United States of America Patent
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Jan 15, 1991
Grant Date -
N/A
app pub date -
Oct 24, 1989
filing date -
Oct 24, 1989
priority date (Note) -
Expired
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Abstract
A borated reaction product that is useful as a dispersancy enhancing lubricant additive. The product is produced from the maleic anhydride adduct of an olefinic alpha-olefin oligomer. The oligomer (HVI-PAO) comprises the product of the oligomerization of C.sub.2 to C.sub.24 alpha-olefin using a reduced valence state Group VIB metal as the oligomerization catalyst. This adduct of maleic anhydride and HVI-PAO is reacted with a secondary amine such as diphenylamine, an alkanol amine such as triethanolamine, and a borating agent such as boric acid or a borate ester.
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