Functionalized polyalphaolefins
OwnerAbhimanyu O. Patil, Satish Bodigeinventors
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Abstract
Sulfur functionalized polyalphaolefins (PAOs) comprising at least one —S—CH2—C(R1R2)—S— moiety, wherein R1 and R2 are independently selected from linear or branched alkyl, are provided. The sulfur functionalized polyalphaolefins (PAOs) are prepared by contacting PAO with elemental sulfur and are useful as lubricating oil base stocks or co-base stocks. The sulfur functionalized PAOs exhibit high oxidative stability and can be prepared without the need for hydrogenation.
Claims30
A sulfur functionalized polyalphaolefin (PAO), said sulfur functionalized PAO comprising at least one —S—CH2—C(R1R2)—S— moiety, wherein R1 and R2 are independently selected from linear or branched alkyl.
A process for die preparation of a sulfur functionalized polyalphaolefin (PAO), said sulfur functionalized PAO comprising at least one —S—CH2—C(R1R2)—S— moiety, wherein R1 and R2 are independently selected from linear or branched alkyl, the process comprising the step of contacting one or more PAOs comprising at least one vinylidene moiety with elemental sulfur or a source of elemental sulfur under reaction conditions sufficient to produce a sulfur functionalized PAO.
A process for the preparation of a sulfur functionalized polyalphaolefin (PAO), the process comprising the step of contacting one or more PAOs comprising at least one vinylidene moiety with elemental sulfur or a source of elemental sulfur under reaction conditions sufficient to produce a sulfur functionalized PAO.
A method for improving the oxidative stability of a polyalphaolefin (PAO), said method comprising the step of contacting one or more PAOs comprising at least one vinylidene moiety with elemental sulfur or a source of elemental sulfur under reaction conditions sufficient to produce a sulfur functionalized PAO.
Dependencies are inferred from the claim text.