Lubricating oil composition containing the reaction product of an alkenylsuccinimide with a bis(hydroxyaromatic) substituted carboxylic acid
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United States of America Patent
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Aug 29, 1995
Grant Date -
N/A
app pub date -
Sep 3, 1993
filing date -
Sep 3, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lubricating oil composition comprising (1) a major portion of a lubricating oil of a base oil viscosity, and (2) a minor portion of an antioxidant-dispersant lubricating additive prepared by the process comprising: (a) reacting a polyethyleneamine with an alkenylsuccinic acid anhydride to form a mono- and/or bis-alkenylsuccinimide; (b) adding to said mono-and/or bis-alkenylsuccinimide, a bis(hydroxyaromatic) substituted carboxylic acid and, optionally, another acylating agent to form an acylated mono-and/or bis-alkenylsuccinimide; (c) recovering said acylated mono-and/or bis-alkenylsuccinimide.
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