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:
Jul. 18, 2017
Filed:
Nov. 25, 2014
The Lubrizol Corporation, Wickliffe, OH (US);
Nicolas Proust, Painesville, OH (US);
Michael J. Covitch, Cleveland Heights, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
An acylated hydrocarbon polymer is aminated by reacting a primary or secondary aromatic amine which is solid at room temperature with an acyl group of the polymer, by: supplying a melt of the acylated polymer; supplying a solution of the aromatic amine in a polar aprotic solvent which has a boiling point of at least about 15° C., a melting point below about 40° C., and a dielectric constant of at least about 5° at 25° C.; mixing the solution at 140° C. to 185° C.; and cooling the resulting amine-reacted polymer with a liquid while retaining the polar aprotic solvent in the polymer.