Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic oxidate of indeterminate composition
Patent
1997-05-14
2000-02-29
McAvoy, Ellen M.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic oxidate of indeterminate composition
508316, 508542, C10M15916, C10M14318
Patent
active
06030930&
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 William
Kim Mahn Won
Rea Salvatore
Rossi Albert
Exxon Chemical Patents Inc
McAvoy Ellen M.
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