The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1998
Filed:
Mar. 28, 1997
Applicant:
Inventors:
David Leslie Andrew, Arkona, CA;
Brian Leslie Slack, Sarnia, CA;
Assignee:
Exxon Research and Engineering Company, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ; C10M / ;
U.S. Cl.
CPC ...
508510 ; 508519 ; 508528 ;
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.