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AssigneeDow Global Technologies LLC
InventorsKim L. Walton, Morgan M. Hughes, Gary L. Rath, Yunwa W. Cheung
Estimating the term…
A lubricant composition comprises an ethylene/α-olefin interpolymer having a number average molecular weight of less than 10,000 g/mol as a base oil and at least one oil additive. The ethylene/α-olefin interpolymer has at least one molecular fraction which elutes between 40° C. and 130° C. when fractionated using TREF, characterized in that the fraction has a molar comonomer content of at least 5 percent higher than that of a comparable random ethylene interpolymer fraction eluting between the same temperatures, wherein said comparable random ethylene interpolymer has the same comonomer(s) and has a melt index, density, and molar comonomer content (based on the whole polymer) within 10 percent of that of the ethylene/α-olefin interpolymer.
A lubricant composition comprising a base oil and at least one oil additive, wherein the base oil comprises an ethylene/α-olefin multi-block interpolymer having a number average molecular weight of less than 10,000 g/mol and wherein the ethylene/α-olefin interpolymer has a comonomer content of a TREF fraction which elutes between 40° C. and 130° C. greater than or equal to the quantity (−0.2013)T+21.07 where T is the numerical value of the peak elution temperature of the TREF fraction being compared, measured in ° C.
A lubricant composition comprising a base oil and at least one oil additive, wherein the base oil comprises an ethylene/α-olefin multi-block interpolymer having:
Dependencies are inferred from the claim text.