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:
May. 04, 1993
Filed:
Jun. 05, 1991
Applicant:
Inventors:
Dirk M Koenhen, RS Dedemsvaart, NL;
Aloysius H Tinnemans, BG Zeist, NL;
Assignee:
X-Flow B.V., AH Almelo, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210490 ; 21050035 ; 21050037 ;
Abstract
The invention relates to a semi-permeable composite membrane with a porous carrier substrate whereon a polymer network obtained by interfacial polymerization is applied, said network comprises an additional polymer. According to the present invention said additional polymer is dissolved in the water phase or in the organic phase, from which said interfacial polymerization occurs, which additional polymer is molecularly entangled in said network and may regulate in particular the selectivity and the permeability of the composite membrane.