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:
Sep. 25, 2007
Filed:
Sep. 08, 2003
Wolfgang Albrecht, Teltow, DE;
Lars-ingemar Dahms, Berlin, DE;
Karola Lützow, Berlin, DE;
Thomas Weigel, Wilhelmshorst, DE;
Roland Hilke, Teltow, DE;
Dieter Paul, Kleinmachnow, DE;
Wolfgang Albrecht, Teltow, DE;
Lars-Ingemar Dahms, Berlin, DE;
Karola Lützow, Berlin, DE;
Thomas Weigel, Wilhelmshorst, DE;
Roland Hilke, Teltow, DE;
Dieter Paul, Kleinmachnow, DE;
GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht, DE;
Abstract
In a polyimide molded body, in particular a polyimide membrane which is functionalized with a chemical group and a method for production thereof, a molded body or membrane is obtained, whereby a pre-prepared polyimide body, as starting material, is brought into contact with an aqueous modifier solution for a period of 1 second to 1 hour. The modifier solution contains at least one modifier substance at least partially dissolved therein, which comprises a primary or secondary amino group, or a similar amino group and additionally at least one further functional group per molecule. The polyimide molded body is brought to an elevated temperature, either during the contact period with the modifier solution or thereafter and then purified and dried. The membrane obtained according to the invention may be functionalized in a targeted adjustable manner and has a high functionalization degree. The functionalization may be achieved simply and economically in an aqueous medium. The membranes obtained are suitable for use in the technical, biotechnological and medical fields and as starter membranes for the production of affinity membranes.