Abstract:
Use of a membrane M, comprising at least one sulfonated polyarylene ether A for removing arsenic compounds AS from aqueous systems, said membrane M being an ultrafiltration or microfiltration membrane with a molecular weight cutoff of at least 2,500 Da.
Abstract:
A process for removing metal ions from aqueous systems is disclosed comprising the treatment of the aqueous system with a membrane M, wherein the membrane M has a molecular weight cut-off above 3,000 Da and comprises A.) a carrier membrane CM, wherein said carrier membrane CM has a porous structure wherein the average pore diameter on one surface is smaller than in the rest of the membrane, thus forming rejection layers R on one side of carrier membrane CM, and B.) an active layer A comprising at least one polymer P comprising a plurality of functional groups G capable of forming stable complexes with metal ions selected from Ca, Mg, Al, Cu, Ni, Pb, Zn, Sb, Co, Cr, Cd, Hg and/or Ag, wherein said active layer A is located on the surfaces of the rejection layers R of carrier membrane CM and throughout the porous structure of carrier membrane CM.
Abstract:
Process for treating water, wherein feed water is being treated with a membrane M, said membrane M being a reverse osmosis membrane, a forward osmosis membrane or a nanofiltration membrane, wherein said membrane M is contacted with an anionic surfactant A, wherein said anionic surfactant comprises a C 6 to C 10 aliphatic hydrocarbon chain.
Abstract:
The present invention relates to a method for the preparation of a membrane (M) which comprises an organic polymer of intrinsic microporosity (PIM) and a sulfonated polyarylenesulfone polymer (sP). The present invention further relates to the membrane (M) obtained by said method and the use of this membrane (M) for the separation of gases from gas mixtures.
Abstract:
Process for reducing the fouling of a surface O, wherein an aqueous solution S of at least one polymer P comprising styrene and at least one ester E of (meth)acrylic acid and polyethylene oxide in a molar ratio of 0.05:1 to 50:1 is applied to said surface O.
Abstract:
Polymer P prepared from at least one hydroxy terminated polyaryleneether HA and at least one siloxane S, wherein said siloxane S is a siloxane according to formula I or a polysiloxane comprising siloxanes according to formula (I), wherein R is an alkyl group and X is a leaving group.
Abstract:
Membrane comprising a carrier and a rejection layer, wherein said membrane is a multiple channel membrane. The rejection layer is a polyamide layer. Process for making multiple channel membranes coated with a polyamide layer.
Abstract:
Filtration system comprising at least one membrane, wherein at least one component or at least one part of a component of the filtration system has been obtained by a process comprising the following steps: A) treatment of a said component or part of a component with at least one organoborane-amine complex, B) treatment of a said component or part of a component with a composition comprising at least one radically polymerizable compound, C) optional treatment with a deblocking agent.
Abstract:
Die vorliegende Erfindung betrifft ein neues, poröses Folienmaterial, das wenigstens eine kohlenstoffhaltige Halbmetalloxidphase umfasst, und ein Verfahren zu seiner Herstellung. Die Erfindung betrifft auch die Verwendung dieser porösen Folienmaterialien als Separatorschicht bzw. zur Herstellung solcher Separatorschichten in elektrochemischen Zellen, insbesondere in Lithiumionen-Zellen und speziell in Lithiumionen-Sekundärzellen. Das erfindungsgemäße poröses Folienmaterial umfasst: a) wenigstens eine kohlenstoffhaltige (Halb)Metalloxidphase A des Siliziums, AIuminiums, Titans oder Zirkons, die an das (Halb)Metall kovalent gebundene Kohlenwasserstoffgruppen aufweist; b) gegebenenfalls eine oder mehrere organische Polymerphasen B, wobei die anorganische (Halb)Metalloxidphase A im wesentlichen kontinuierliche Phasendomänen bildet, in die die im Folienmaterial enthaltenen Porenphase und die gegebenenfalls enthaltene(n) organischen Polymerphase(n) B eingelagert sind, wobei der mittlere Abstand zweier Phasengrenzen benachbarter Domänen identischer Phasen maximal 50 nm, vorzugsweise maximal 10 nm, insbesondere maximal 5 nm und speziell maximal 2 nm beträgt.
Abstract:
Use of polymer P, obtainable from glycidol and at least one polyol O and/or at least one polyamine A, wherein said polyol O bears at least three hydroxy groups and wherein said polyamine A bears at least three amino groups, for chelating boron containing compounds B.