Compositions – Electrolytes for electrical devices
Patent
1984-12-07
1986-12-30
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
252 515A, 252 56D, 252 56R, 5253317, 5253318, C10M13316
Patent
active
046327690
ABSTRACT:
Oil soluble viscosity index improving ethylene copolymers, such as copolymers of ethylene and propylene; and ethylene, propylene and diolefin; etc., are reacted or grafted with ethylenically unsaturated carboxylic acid moieties, preferably maleic anhydride moieties, and reacted with polyamines having two or more primary amine groups and a C.sub.22 to C.sub.28 olefin carboxylic acid component, preferably alkylene polyamine and alkenyl succinic anhydride, respectively. These reactions can permit the incorporation of varnish inhibition and dispersancy into the ethylene copolymer while inhibiting cross-linking with resulting viscosity increase, haze or gelling. The aforesaid grafting reaction may be carried out thermally, or more preferably with a free radical initiator such as a peroxide in a mineral lubricating oil, in which case the olefin carboxylic acid component, preferably also acts to solubilize insoluble compounds formed by side reactions, such as maleic anhydride grafted oil molecules reacted with amine, to thereby inhibit haze formation, particularly when preparing oil concentrates of the V.I.-dispersant additive for later addition to lubricating oils.
REFERENCES:
patent: 3316177 (1967-04-01), Dorer, Jr.
patent: 3326804 (1967-06-01), Shih-en Hu
patent: 4089794 (1978-05-01), Engel et al.
patent: 4089795 (1978-05-01), Engel et al.
patent: 4137185 (1979-01-01), Gardiner et al.
patent: 4144181 (1979-03-01), Elliott et al.
patent: 4160739 (1979-07-01), Stambaugh et al.
patent: 4161452 (1979-07-01), Stambaugh et al.
patent: 4174322 (1979-11-01), Brois et al.
Bloch Ricardo
Brownawell Darrell W.
Gutierrez Antonio
Johnston Jack E.
Exxon Research & Engineering Co.
Howard Jacqueline V.
Johmann F. T.
Maggio R. A.
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