The present disclosure relates to improved semipermeable membranes based on acrylonitrile copolymers for use in dialyzers for the extracorporeal treatment of blood in conjunction with hemodialysis, hemofiltration or hemodiafiltration. The present disclosure further relates to methods of producing such membranes.

The present invention relates to polymeric membranes. In particular, the present invention relates to the use of membranes comprising polyvinyl alcohol in electrophoresis.

The present invention relates to polymeric membranes. In particular, the present invention relates to the use of membranes comprising polyvinyl alcohol in electrophoresis.

Provided is a hydrophilic porous membrane including a porous membrane and a hydroxyalkyl cellulose (preferably, hydroxypropyl cellulose) retained in the porous membrane, the hydroxyalkyl cellulose having a weight-average molecular weight of 10,000 or more and less than 110,000. The hydrophilic porous membrane of embodiments of the invention has high water permeability and can pass an integrity test in the case of being used as a filtration membrane of a filter cartridge. Also provided is a method for producing the above-mentioned hydrophilic porous membrane, the method comprising causing a hydrophilizing liquid including 0.005% to 0.500% by mass of a hydroxyalkyl cellulose having a weight-average molecular weight of 10,000 or more and less than 110,000, to permeate a porous membrane.

Provided is a hydrophilic porous membrane including a porous membrane and a hydroxyalkyl cellulose (preferably, hydroxypropyl cellulose) retained in the porous membrane, the hydroxyalkyl cellulose having a weight-average molecular weight of 10,000 or more and less than 110,000. The hydrophilic porous membrane of embodiments of the invention has high water permeability and can pass an integrity test in the case of being used as a filtration membrane of a filter cartridge. Also provided is a method for producing the above-mentioned hydrophilic porous membrane, the method comprising causing a hydrophilizing liquid including 0.005% to 0.500% by mass of a hydroxyalkyl cellulose having a weight-average molecular weight of 10,000 or more and less than 110,000, to permeate a porous membrane.

Embodiments of the present disclosure feature an intrinsically microporous ladder-type Trger's base polymer including a repeat unit based on a combination of W-shaped CANAL-type and V-shaped Trger's base building blocks, methods of making the intrinsically microporous ladder-type Trger's base polymer, and methods of using the intrinsically microporous ladder-type Trger's base polymer to separate a chemical species from a fluid composition including a mixture of chemical species. Embodiments of the present disclosure further include ladder-type diamine monomers for reacting to form a Trger's base in situ, and methods of making the ladder-type diamine monomers using catalytic arene-norbornene annulation.

Embodiments of the present disclosure feature an intrinsically microporous ladder-type Trger's base polymer including a repeat unit based on a combination of W-shaped CANAL-type and V-shaped Trger's base building blocks, methods of making the intrinsically microporous ladder-type Trger's base polymer, and methods of using the intrinsically microporous ladder-type Trger's base polymer to separate a chemical species from a fluid composition including a mixture of chemical species. Embodiments of the present disclosure further include ladder-type diamine monomers for reacting to form a Trger's base in situ, and methods of making the ladder-type diamine monomers using catalytic arene-norbornene annulation.

A reverse osmosis membrane is disclosed that has a hydrogel disposed on its surface, wherein the hydrogel is formed from a crosslinked polyvinylpyrrolidone or a copolymer of vinyl pyrrolidone. The hydrogel-coated membrane resists fouling by feed water contaminants. The permeate flux rate and salt rejection of the underlying membrane are not negatively affected by the hydrogel coating.

A gas separation membrane containing a matrix resin and hyperbranched polymer- or dendrimer-bound, heteromorphous shaped silica nanoparticles, which are formed of heteromorphous shaped silica nanoparticles having surfaces onto which a hyperbranched polymer or a dendrimer is chemically added.

A gas separation membrane containing a matrix resin and hyperbranched polymer- or dendrimer-bound, heteromorphous shaped silica nanoparticles, which are formed of heteromorphous shaped silica nanoparticles having surfaces onto which a hyperbranched polymer or a dendrimer is chemically added.