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. 15, 1995
Filed:
Jul. 19, 1994
Applicant:
Inventors:
Harold Heller, Koln, DE;
Franz-Rudolf Minz, Dormagen, DE;
Reinhold M Klipper, Koln, DE;
Alfred Mitschker, Odenthal-Holz, DE;
Heiko Hoffmann, Bergisch Gladbach, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; B01J / ; B01J / ; C08F / ;
U.S. Cl.
CPC ...
210683 ; 210660 ; 210681 ; 521 32 ; 525381 ; 525382 ;
Abstract
Weakly basic anion exchangers of the poly(meth)acrylamide type which have been prepared by aminolysis of poly(meth)acrylonitrile or poly(meth)acrylate with polyamines of defined composition have an improved absorption capacity for sulphate ions and are suitable for selectively removing sulphate ions from aqueous liquids, in particular from sodium chloride brine and from waste waters.