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:
Aug. 20, 2019
Filed:
May. 11, 2017
Evonik Oil Additives Gmbh, Darmstadt, DE;
Regents of the University of Minnesota, Minneapolis, MN (US);
Klaus Schimossek, Bensheim, DE;
Katrin Schoeller, Darmstadt, DE;
Mohammad T. Savoji, St. Paul, MN (US);
Marc A. Hillmyer, Minneapolis, MN (US);
Timothy P. Lodge, Minneapolis, MN (US);
Evonik Oil Additives GmbH, Darmstadt, DE;
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
A graft copolymer can include, in its backbone, at least one segment having repeating units obtainable by ring-opening metathesis polymerization (ROMP) of an optionally substituted cycloalkene, and at least one segment comprising repeating units obtainable by atom transfer radical polymerization (ATRP) of a (meth)acrylate. The corresponding graft copolymer is highly suitable for use as an oil additive in internal combustion engines, in particular, in combustion engines which are operated for longer periods of time at substantially constant operating temperatures.