| abstract |
The present invention relates to the field of polymer chemistry and relates, for example, to reverse osmosis membranes or nanofilter membranes used for the treatment of industrial water, desalination of seawater. It is an object of the present invention to provide a reverse osmosis membrane or nanofilter membrane having very good contamination characteristics. The object of the present invention is solved through at least a reverse osmosis membrane or a nanofilter membrane, wherein the reverse osmosis membrane or nanofilter membrane comprises a carrier layer, at least one porous protective layer on the carrier layer, at least one Wherein the active layer is composed of one active separation layer and at least one cover layer arranged on the active separation layer, wherein the active separation layer is composed of polyamide having an acid chloride group on the surface of the active separation layer, And a functional group of the cover layer is chemically reacted with the acid chloride group of the polyamide of the active separation layer. The above object of the present invention is also achieved by a method of providing at least one cover layer immediately following the active separation layer composed of polyamides. |