Manufacturing method for the production of polyalphaolefin based synthetic greases (LAW500)
AssigneeExxon Research & Engineering Co.
InventorsDavid Leslie Andrew, Brian Leslie Slack
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Abstract
A method is disclosed for improving the thickener yield in soap thickened polyalphaolefin base oil greases comprising the steps of (a) producing a simple or complex soap thickener in a quantity of a first PAO of viscosity lower than that of the base oil component in the final grease composition to produce a thickened PAO and (b) adding to the thickened PAO a quantity of a second PAO of viscosity higher than that desired of the base oil component in the final grease composition sufficient to produce a final grease product having the desired base oil viscosity.
Claims10
A method for improving the yields of polyalphaolefin base oil greases of different grease viscosity grades, wherein the grease viscosity grade is determined by the viscosity of the final base oil in the grease comprising (a) forming a thickener in a quantity of a first polyalphaolefin oil, said first polyalphaolefin oil having a viscosity which is lower than the final base oil viscosity of the grease, to form a first thickened mass, (b) adding to the first thickened mass a sufficient quantity of a second polyalphaolefin oil which has a viscosity which is higher than that of the final base oil viscosity of the grease to thereby produce a finished grease product containing a final mixture of polyalphaolefin oils having the desired viscosity of the final, total base oil.
Dependencies are inferred from the claim text.