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:
Feb. 14, 2023
Filed:
Mar. 07, 2019
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Jingwen Zhang, Houston, TX (US);
John R. Hagadorn, Houston, TX (US);
Rainer Kolb, Kinwood, TX (US);
Jo Ann M. Canich, Houston, TX (US);
Maksim Shivokhin, Houston, TX (US);
Peijun Jiang, Katy, TX (US);
Britni J. Brobey, Houston, TX (US);
EXXONMOBIL CHEMICAL PATENTS INC., Baytown, TX (US);
Abstract
In some embodiments, ethylene-propylene random copolymers as viscosity modifiers were synthesized with pyridyldiamido catalyst systems and a chain transfer agent. In some embodiments, the present disclosure provides for ethylene-propylene random copolymers having an ethylene content between about 45 wt % and about 55 wt %. In some embodiments, the ethylene-propylene random copolymer is used as a viscosity modifier in a lubricating composition and a fuel composition.