Compositions – Electrolytes for electrical devices
Patent
1989-12-14
1991-12-24
Willis, Jr., Prince
Compositions
Electrolytes for electrical devices
252 35, 562590, 562594, C10M12928
Patent
active
050750194
ABSTRACT:
The present invention is directed to a low sediment method of producing oleaginous compositions containing copper salts of the product of a polyolefin having a numerical average molecular weight (M.sub.n) of at least 600 which has been substituted with an average of at least 0.5 dicarboxylic acid anhydride moiety per polyolefin molecule, wherein the polyolefin-substituted dicarboxylic acid anhydride is contacted with a water-soluble copper reactant in the presence of at least 1,000 wt. % above the amount theoretically required to hydrolyze the polyolefin-substituted dicarboxylic acid anhydride material charged) and in the presence of a solvent for the polyolefin-substituted dicarboxylic acid anhydride material charged. The resulting copper salt products, and amine derivatives thereof, are useful in lubricating oils as additives, e.g., as antioxidant lube oil additives.
REFERENCES:
patent: 3163603 (1964-12-01), LeSuer
patent: 3271310 (1966-09-01), LeSuer
patent: 3652616 (1972-03-01), Watson et al.
patent: 4552677 (1985-11-01), Hopkins
patent: 4751011 (1988-06-01), Lundberg et al.
Evans Gordon F.
Evans Joan M.
Giffin Gregory C.
Exxon Chemical Patents Inc.
Johnson Jerry D.
Murray, Jr. J. B.
Willis Jr. Prince
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