Polyether fluids miscible with non-polar hydrocarbon lubricants
AssigneeMobil Oil Corporation
InventorsJoan M. Kaminski, Richard N. Nipe, Liwen Wei, Margaret May-Som Wu
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Abstract
Homogeneous lubricant blends are disclosed comprising polyether liquid lubricants miscible with synthetic hydrocarbon fluids or severely hydroprocessed basestock. The lubricants comprise SHF or hydroprocessed basestock and polyalkylene oxide polymer having recurring units of at least one long chain monoepoxy alkane monomer(s) containing 8 to 30 carbon atoms and short chain comonomer(s) selected from the group consisting of substituted or unsubstituted tetrahydrofuran, oxetan, butylene oxide propylene oxide and ethylene oxide wherein the mole ratio of long chain monoepoxy alkane monomers to short chain comonomers is between 0.5 and 9.
Claims7
A liquid lubricant composition comprising:
- a homogeneous blend of synthetic hydrocarbon fluid comprising polyalphaolefins(s) having a viscosity of 3-1000 cSt at 100 C. or severely hydroprocessed basestock and polyalkylene oxide polymer or copolymer having recurring oxyalkylene units of at least one long chain monoepoxy alkane monomer containing 8 to 30 carbon atoms, said polymer or copolymer having a viscosity of 5-200 cSt at 100 C. with said monomer(s) taken in combination with one or more short chain comonomer(s) selected from the group consisting of C.sub.1 -C.sub.4 alkyl substituted or unsubstituted tetrahydropyran, tetrahydrofuran, oxetane, butylene oxide, propylene oxide and ethylene oxide, wherein the mole ratio of long chain monoepoxy alkane monomers to short chain comonomers is between 0.5 and 9.
Dependencies are inferred from the claim text.