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:
Sep. 24, 2024
Filed:
Jul. 01, 2021
Evonik Operations Gmbh, Essen, DE;
Stefan Karl Maier, Ober-Ramstadt, DE;
Peter Altenbuchner, Muenster, DE;
Fabian Ziegler, Darmstadt, DE;
Christiane Zatocil, Herten, DE;
Stefan Hilf, Zwingenberg, DE;
Emily Clare Schweiβinger, Dortmund, DE;
Jens Elsner, Hochheim, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
A polyester is useful as a high viscosity base fluid. A method for its preparation involves epoxidizing an alpha-olefin, reacting the alpha-epoxide or diol with a saturated linear aliphatic dicarboxylic acid, and isolating the polyester. Lubricant compositions can contain such polyesters and the compositions are useful as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or as hydraulic oils.