Abstract: The present invention relates to a method for the production of a polymer membrane based on poly(meth)acrylonitrile, in which a poly(meth)acrylonitrile-comprising solution is used. The solution comprises a solvent for poly(meth)acrylonitrile and also a non-solvent. All of the components of the solution which are used are thereby non-toxic and do not represent chemicals which are a hazard to water. In addition, a solution which comprises a solvent for poly(meth)acrylonitrile and also a non-solvent is described. The solution is suitable in particular for implementing the method according to the invention.

Abstract: The present invention relates to a method for the production of a solvent-stable polymer membrane, in which a poly(meth)acrylonitrile-comprising solution which comprises, at the same time, a crosslinker, is used. The solution can be poured as a film and the film can be crosslinked. Likewise, it is possible to spin a hollow thread membrane from the solution and subsequently to crosslink this. The thereby produced polymer membrane based on poly(meth)acrylonitrile or copolymers derived herefrom is distinguished by a crosslinking configured throughout. In addition, a solution is described, comprising a solvent and also, dissolved therein, a poly(meth)acrylonitrile or copolymer derived herefrom and also a crosslinker for the polyacrylonitrile which is suitable for the method according to the invention for the production of the polymer membranes according to the invention.

Abstract: The invention relates to a process for producing a polymer membrane, the polymer membrane being produced from a solution, in particular a casting solution, comprising at least one first polymer. The invention further relates to a polymer membrane. The process of the invention is distinguished by the fact that a water-soluble second polymer and/or oligomer that forms phases in the solution is part of the solution. The polymer membrane of the invention, preferably produced by the process of the invention, has an oil flow rate, in particular of a refined edible oil, of greater than 200 l/m2 h bar at 60° C.

Abstract: A catalyst is produced by bonding a homogeneous catalyst to the surface of a catalyst support. A catalyst may include a catalyst support, a spacer molecule bonded to the catalyst support, and a homogeneous catalyst bonded to the spacer molecule. A catalyzed reaction can be carried out by providing reactants in a first phase and providing a catalyst as described herein in the first phase.

Abstract: A polymer electrolyte membrane includes a membrane polymer made of monomer units that have aromatic polyarylenes groups with proton-conducting functional groups bound to the aromatic polyarylene groups. The polymer electrolyte membrane can be used as a proton-conducting polymer membrane between the electrodes in a fuel cell.

Abstract: A method for producing polymers with inherent microporosity from a starting composition by means of polycondensation and/or polyether synthesis, is carried out with the use of a micro reaction system in a continuous process.

Abstract: Composite materials are provided. A representative material is configured as a composite membrane for gas separation, vapor separation, or pervaporation. The composite membrane comprises at least a first polymer and a second polymer. Processes for the production of composite materials, in particular composite membranes, also are provided.

Abstract: A catalyst is produced by bonding a homogeneous catalyst to the surface of a catalyst support. A catalyst may include a catalyst support, a spacer molecule bonded to the catalyst support, and a homogeneous catalyst bonded to the spacer molecule. A catalyzed reaction can be carried out by providing reactants in a first phase and providing a catalyst as described herein in the first phase.

Abstract: A polymer electrolyte membrane includes a membrane polymer made of monomer units that have aromatic polyarylenes groups with proton-conducting functional groups bound to the aromatic polyarylene groups. The polymer electrolyte membrane can be used as a proton-conducting polymer membrane between the electrodes in a fuel cell.

Abstract: The invention relates to a process for producing a polymer membrane, the polymer membrane being produced from a solution, in particular a casting solution, comprising at least one first polymer. The invention further relates to a polymer membrane. The process of the invention is distinguished by the fact that a water-soluble second polymer and/or oligomer that forms phases in the solution is part of the solution. The polymer membrane of the invention, preferably produced by the process of the invention, has an oil flow rate, in particular of a refined edible oil, of greater than 200 l/m2 h bar at 60° c.

Abstract: Composite materials are provided. A representative material is configured as a composite membrane for gas separation, vapor separation, or pervaporation. The composite membrane comprises at least a first polymer and a second polymer. Processes for the production of composite materials, in particular composite membranes, also are provided.

Abstract: A membrane comprised of a graft copolymer includes a base component and a copolymer component. The base component includes a first polymer with a repeating unit: ##STR1## wherein m=0.1-0.9, n=0.9-0.1, p=0.03-0.04, R.sub.1 can be a linear, branched or cyclic C.sub.1 -C.sub.12 hydrocarbon radical, R.sub.2 can be a linear, branched or cyclic C.sub.1 -C.sub.12 hydrocarbon radical, and at least one of R.sub.1 and R.sub.2 is a linear or branched hydrocarbon radical with a terminal C.dbd.C double bond. The base component can include a second polymer with C.dbd.C double bonds located in the main chain and/or a side chain. The second polymer has a repeating unit: ##STR2## wherein m=n; R.sup.1 and R.sup.2 are identical or different; and 10 to 100% of R.sup.1 and/or R.sup.2 have a C.dbd.C double bond.