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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.:

US 11214752 B1

PDFFull Text
Date of Patent:
Jan. 04, 2022

Filed:

Jul. 19, 2018

Lubricant composition containing copolymers of polyisobutylenemethacrylate

Applicant:

Basf SE, Ludwigshafen am Rhein, DE;

Inventors:

Szilard Csihony, Ludwigshafen am Rhein, DE;

Anja Thomas, Ludwigshafen am Rhein, DE;

Kevin J. Desantis, Tarrytown, NY (US);

Philippe Rabbat, Tarrytown, NY (US);

Andrea Misske, Ludwigshafen am Rhein, DE;

Johannes Barth, Shanghai, CN;

Meik Ranft, Ludwigshafen am Rhein, DE;

Peter Mueller, Ludwigshafen am Rhein, DE;

Wolfgang Grabarse, Ludwigshafen am Rhein, DE;

Christoph Fleckenstein, Ludwigshafen am Rhein, DE;

Assignee:

BASF SE, Ludwigshafen am Rhein, DE;

Attorney:

Faegre Drinker Biddle & Reath LLP

Primary Examiner:

Taiwo Oladapo

Int. Cl.
CPC ...
C10M 145/00 (2006.01); C10M 145/14 (2006.01); C10M 143/06 (2006.01); C10M 169/04 (2006.01); C10N 20/00 (2006.01); C10N 40/04 (2006.01); C10N 30/00 (2006.01); C10N 20/02 (2006.01); C10N 30/02 (2006.01); C10N 40/08 (2006.01); C10N 40/20 (2006.01); C10N 40/25 (2006.01); C10N 50/10 (2006.01);
U.S. Cl.
CPC ...
C10M 145/14 (2013.01); C10M 143/06 (2013.01); C10M 169/047 (2013.01); C10M 2205/022 (2013.01); C10M 2205/024 (2013.01); C10M 2205/026 (2013.01); C10M 2209/084 (2013.01); C10N 2020/02 (2013.01); C10N 2020/071 (2020.05); C10N 2030/02 (2013.01); C10N 2030/68 (2020.05); C10N 2040/042 (2020.05); C10N 2040/044 (2020.05); C10N 2040/08 (2013.01); C10N 2040/20 (2013.01); C10N 2040/25 (2013.01); C10N 2050/10 (2013.01);
Abstract

The present invention is directed to the use of poly(polyisobutylenemethacrylate) as viscosity index improving component in lubricating oil compositions. The invention is further related to lubricating oil compositions comprising poly(polyisobutylenemethacrylate) with enhanced shear stability.

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