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:
Mar. 01, 1994
Filed:
Dec. 09, 1992
Applicant:
Inventors:
Heinz-Dieter Sluma, Grossostheim, DE;
Jurgen Passlack, Ennepetal, DE;
Harald Schmitt, Laudenbach, DE;
Walter Loffelmann, Erlenbach, DE;
Karl Henke, Wuppertal, DE;
Assignee:
Akzo NV, Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
21050023 ; 21050043 ; 26417715 ;
Abstract
An asymmetric semipermeable membrane for dialysis and/or ultrafiltration is composed of a copolymer of acrylonitrile and acrylic ester and an ionic or ionizable monomer in the form of a hollow fiber. The copolymer is composed of 90.50 to 95.00 wt. % acrylonitrile, 4.99 to 8.60 wt. % acrylic ester, and 0.01 to 0.90 wt. % of the ionic or ionizable monomer. Also provided is a process for its manufacture.