Patent application number | Description | Published |
20100197859 | BLENDS FROM BRANCHED POLYARYL ETHERS AND HYDROPHILIC POLYMERS - The present invention provides polymer blends comprising the components
| 08-05-2010 |
20110266222 | POLYBENZIMIDAZOLE-BASED MEMBRANES FOR THE DEHYDRATION OF ORGANIC LIQUIDS VIA PERVAPORATION - A hollow fiber membrane has an outer layer of polybenzimidazole (PBI) and an inner support layer, e.g., polyetherimide (PEI). The hollow fiber membrane is made by a co-extrusion (spinning) process. The hollow fiber membrane may be used in a pervaporation process, such as a pervaporation dehydration of an organic liquid, e.g., ethylene glycol (EG). A contactor is made with the hollow fiber membrane. | 11-03-2011 |
20120213998 | Process for the Preparation of Hyperbranched Hollow Fibers - The invention relates to a process for the preparation of a hollow filament (F) based on one or several molten or dissolved hyperbranched polymers (P) and potentially one or several further polymers (FP), characterized in that the molten or dissolved hyperbranched polymer (P) or the mixture of the hyperbranched polymer (P) with the further polymer (FP) is passed through one or several spinnerets (S), wherein the ratio between the spinneret die-length (L) and the die-channel (Delta-D) is between 0.1 and 9.5. The process can be applied for the preparation of hyperbranched polyethersulfone (HPES) hollow filaments. | 08-23-2012 |
20120273423 | COMPOSITE MEMBRANES COMPRISING A SULFONATED POLYARYLETHER AND THEIR USE IN FORWARD OSMOSIS PROCESSES - The present invention is directed to thin film composite membrane (TFC membrane) comprising a substrate layer (S) based on a sulfonated polymer, e.g. a sulfonated polyarylether, and a polyamide film layer (F) and further to a method for their preparation. Furthermore, the present invention is directed to osmosis processes, in particular to forward osmosis (FO) processes, using said membrane. | 11-01-2012 |
20130277318 | ULTRAFILTRATION MEMBRANES FABRICATED FROM SULFONATED POLYPHENYLENESULFONES - The present invention is directed to ultrafiltration membranes comprising a membrane substrate layer (S) based on a sulfonated polyaryleneethersulfone polymer and to a method for their preparation. Furthermore, the present invention is directed to ultrafiltration processes making use of said membrane. | 10-24-2013 |
20130306551 | HIGH PERFORMANCE POSITIVELY CHARGED COMPOSITE MEMBRANES AND THEIR USE IN NANOFILTRATION PROCESSES - The present invention is directed to positively charged nanofiltration (NF) membranes comprising a substrate layer (S) based on a sulfonated polymer and a positively charged film layer (F) on top of said substrate, and to a method for their preparation. Furthermore, the present invention is directed to nanofiltration processes making use of said composite membrane. | 11-21-2013 |
20130313192 | ACID RESISTANT PBI MEMBRANE FOR PERVAPORATION DEHYDRATION OF ACIDIC SOLVENTS - A pervaporation membrane may be an acid-resistant polybenzidimazole (PBI) membrane. The acid-resistant PBI membrane may be a PBI membrane chemically modified by a process selected from the group consisting of sulfonation, phosphonation, cross-linking, N-substitution, and/or combinations thereof. The membrane may be thermally stabilized. A method for the dehydration of an acid material may include the steps of: contacting an acidic aqueous solution with a membrane of an acid-resistant polybenzidimazole; taking away a permeate stream rich in water; and taking away a concentrate steam rich in the acid material. The acidic aqueous solution may be acetic acid. | 11-28-2013 |
20130341273 | COMPOSITE MEMBRANES COMPRISING SULFONATED POLYPHENYLENESULFONE AND THEIR USE IN FORWARD OSMOSIS PROCESSES - The present invention is directed to thin film composite membranes (TFC membranes) comprising a substrate layer (S) based on a sulfonated polyphenylenesulfone, and a polyamide film layer (F) and further to a method for their preparation. Furthermore, the present invention is directed to osmosis processes, in particular to forward osmosis (FO) processes, using said membrane. | 12-26-2013 |