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:
Nov. 13, 2012
Filed:
Apr. 16, 2010
Rainer Kolb, Kingwood, TX (US);
Sudhin Datta, Houston, TX (US);
Liehpao Oscar Farng, Lawrenceville, NJ (US);
Vera Minak-bernero, Bridgewater, NJ (US);
Eric B. Sirota, Flemington, NJ (US);
Thomas Tungshi Sun, Clinton, NJ (US);
Mun Fu Tse, Seabrook, TX (US);
Rainer Kolb, Kingwood, TX (US);
Sudhin Datta, Houston, TX (US);
Liehpao Oscar Farng, Lawrenceville, NJ (US);
Vera Minak-Bernero, Bridgewater, NJ (US);
Eric B. Sirota, Flemington, NJ (US);
Thomas Tungshi Sun, Clinton, NJ (US);
Mun Fu Tse, Seabrook, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include less than about 80 wt. % of units derived from ethylene and one or more alpha-olefin comonomers having 3 to 20 carbon atoms. The ethylene-based copolymers have a melting peak (Tm), as measured by DSC, of 80° C. or less, and a polydispersity index of about 2.8 or less. In some embodiments, the ethylene-based copolymers have an intramolecular composition distribution of about 50 wt. % or less and/or an intermolecular composition distribution of about 50 wt. % or less.