Chemistry of hydrocarbon compounds – Product blend – e.g. – composition – etc. – or blending process... – Component of indefinite molecular weight greater than 150
Patent
1995-05-22
1996-03-12
McAvoy, Ellen M.
Chemistry of hydrocarbon compounds
Product blend, e.g., composition, etc., or blending process...
Component of indefinite molecular weight greater than 150
585 10, 585 12, 252 515A, 252 56R, C10M10708
Patent
active
054988098
ABSTRACT:
The invention pertains to oil soluble copolymers derived from ethylene and 1-butene which have a number average molecular weight between about 1,500 and 7,500, at least about 30 percent of all polymer chains terminated with ethylvinylidene groups, and ethylene-derived content of not greater than about 50 weight percent, and which form solutions in mineral oil free of polymer aggregates, as determined by light scattering measurements. Lubricating oil additives, particularly dispersants, produced by the functionalization and derivatization of these copolymers have enhanced performance (e.g., improved dispersancy and pour point) in lubricating oil compositions, attributable in part to the combination of properties characterizing the copolymers.
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Emert Jacob
Frederick Jeffrey W.
Kim Mahn W.
Rea Salvatore
Rossi Albert
Cohen Harvey L.
Exxon Chemical Patents Inc.
McAvoy Ellen M.
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