Fuel compositions of novel ethylene alpha-olefin polymers substituted amine dispersant additives
AssigneeExxon Chemical Patents Inc.
InventorsJacob Emert, Alan M. Schilowtiz, Antonio Gutierrez, Won R. Song
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Abstract
The present invention is directed to an oil-soluble lubricating oil additive comprising at least one terminally unsaturated ethylene alpha-olefin polymer of 300 to 20,000 number average molecular weight terminally substituted with amine compounds, which are also useful additives to oleaginous compositions, e.g., as fuel and lubricating oil dispersants.
Claims20
A fuel composition containing from about 0.001 to 0.5 wt% of an additive which comprises an ethylene alpha-olefin polymer substituted with at least one amine compound, wherein said amine compound is directly attached to the backbone of the polymer, wherein said polymer comprises monomer units derived from ethylene and at least one alpha-olefin of the formula H.sub.2 C.dbd.CHT.sup.1 wherein T.sup.1 is an alkyl group of from 1 to 18 carbon atoms, wherein said polymer has a number average molecular weight of from about 300 to 20,000 and an average of at least about 30% of said polymer chains contain terminal ethenylidene unsaturation prior to being substituted with said amine compound, and wherein said additive is characterized by a VR value of less than about 4.1.
A fuel composition containing from about 0.001 to 0.5 wt. % of an additive which comprises an ethylene alpha-olefin polymer substituted with at least one amine, said polymer comprising monomer units derived from ethylene and at least one alpha-olefin of the formula H.sub.2 C.dbd.CHT.sup.1 wherein T.sup.1 is an alkyl group of from 1 to 2 carbon atoms, and wherein said polymer has a number average molecular weight of from about 700 to 20,000 and an average of at least about 60% of said polymer chains contain terminal ethenylidene unsaturation and wherein said additive is characterized by a VR value of less than about 4.1.
A fuel composition containing from about 0.001 to 0.5 wt. % of an oil soluble dispersant mixture comprising an adduct of:
- (a) an ethylene alpha-olefin polymer substituted with halide moieties, said polymer comprising monomer units derived from ethylene and at least one alpha-olefin of the formula H.sub.2 C--CHT.sup.1 wherein R.sup.1 is an alkyl group of from 1 to 18 carbon atoms, and wherein said polymer has a number average molecular weight of from about 300 to 10,000 and an average of at least about 30% of said polymer chains contain terminal ethenylidene unsaturation and wherein said additive is characterized by a VR value of less than about 4.1, and
- (b) at least one amine, said dispersant having a VR' value of less than about 4.1.
Dependencies are inferred from the claim text.