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:
Mar. 18, 2025
Filed:
Dec. 17, 2021
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Frank-Olaf Mähling, Mannheim, DE;
Maria Stimeier, Darmstadt, DE;
Thomas Schimmel, Shanghai, CN;
Stefan Karl Maier, Ober-Ramstadt, DE;
Sofia Sirak, Plymouth Meeting, PA (US);
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 145/14 (2006.01); C08F 293/00 (2006.01); C10M 169/04 (2006.01); C10N 20/00 (2006.01);
U.S. Cl.
CPC ...
C10M 145/14 (2013.01); C08F 293/005 (2013.01); C10M 169/041 (2013.01); C10M 2203/003 (2013.01); C10M 2209/084 (2013.01); C10N 2020/071 (2020.05);
Abstract
A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.