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:
Apr. 16, 1985
Filed:
Oct. 17, 1983
Applicant:
Inventors:
Mark J McKinley, Linwood, MI (US);
Jim W Sanner, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210689 ; 210692 ; 252194 ; 427336 ; 428500 ; 524547 ;
Abstract
A process for absorbing water containing relatively large amount of acid comprises contacting an aqueous medium with a rapidly water-swellable polymer comprising an alkali metal sulfonic acid salt containing polyelectrolyte. For example, a crosslinked polymer containing polymerized acrylamide and sodium 2-acrylamide-2-methylpropane sulfonate can be used to remove acidic water from fuels, battery casings, etc.