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. 04, 2020
Filed:
Nov. 01, 2016
Rohm and Haas Company, Collegeville, PA (US);
Dow Global Technologies Llc, Midland, MI (US);
Collin H. Martin, North Wales, PA (US);
Stephen Pease, Ambler, PA (US);
Daryl J. Gisch, Midland, MI (US);
Stanislas Baudouin, La Rochelle, FR;
ROHM AND HAAS COMPANY, Collegeville, PA (US);
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Abstract
A process of separating carboxylic acids comprising two steps. The first step is to provide an aqueous solution comprising (i) one or more mono-carboxylic acids, (ii) one or more di-carboxylic acids, and (iii) one or more tri-carboxylic acids. The second step is to pass the aqueous solution through a collection of resin particles, where the resin particles comprise covalently bound quaternary ammonium groups, and wherein the collection of resin particles has uniformity coefficient of 1.5 or less.