Compositions – Electrolytes for electrical devices
Patent
1986-06-24
1987-08-11
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
252 334, 252 515A, 252 464, C10M13706, C10M13344
Patent
active
046860541
ABSTRACT:
There is a disclosed an improved lubricating oil dispersant suitable for both gasoline engine and diesel engine lubricating oil, the dispersant being prepared in a sequential process whereby a polyolefin succinic anhydride is reacted first with an alkylene polyamine and subsequently with maleic anhydride of a C.sub.1 -C.sub.18 alkenyl or alkyl succinic anhydride to provide a diimide dispersant having a final mole ratio of 2.3 to 3.0 moles of anhydride per mole of polyamine.
REFERENCES:
patent: 3401118 (1968-09-01), Benoit, Jr.
patent: 3415750 (1968-12-01), Anzenberger
patent: 3455827 (1969-07-01), Mehmedbasich
patent: 3630902 (1971-12-01), Coupland
Smalheer, Cili et al.; "Lubricant Additives", pp. 2-4 and 10; 1967.
Bloch Ricardo
Brownawell Darrell W.
Chen Frank J.
Gutierrez Antonio
Wisotsky Max J.
Exxon Research & Engineering Co.
Howard Jacqueline V.
Maggio R. A.
Mahon J. J.
Murray, Jr. J. B.
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