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. 24, 2021
Filed:
Apr. 25, 2018
Afton Chemical Corporation, Richmond, VA (US);
Sheng Jiang, Glen Allen, VA (US);
Arturo Carranza, Henrico, VA (US);
AFTON CHEMICAL CORPORATION, Richmond, VA (US);
Abstract
A viscosity index improver comprising a reaction product of (i) an acylated copolymer obtainable by acylating a copolymer of ethylene and one or more C-Calpha-olefins having an Mn of 3,000 to 250,000 g/mol; and (ii) a compound of the formulae (I)-(V): wherein R, R, R, R, R, Rand Rare independently selected from a hydrogen and an optionally substituted linear or branched alkyl or alkenyl group, and R, R, R, and RR, R, R, R, R, and Rare independent selected from an optionally substituted linear or branched alkyl or alkenyl group, and a sum of the number of carbon atoms in each compound of the formulae (I)-(V) is from 6 to 31.