| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210500410 | Sulfone | 9 |
| 20080197072 | Microfiltration Membrane With Improved Filtration Properties - Integrally asymmetric flat membrane for microfiltration comprising at least 40 wt. % of a hydrophobic first sulfone polymer and a hydrophilic second polymer with a pore size distribution over the membrane wall, having a separating layer in the wall's interior, and also having, in the direction from this separating layer, pore sizes increasing towards the surfaces, the second surface having pores with a mean diameter of at least 1 μm. The membrane comprises the hydrophilic second polymer in a concentration of 0.1-10 wt. %. The separating layer is located in an region facing the first surface, and the pore size passes through a maximum in the direction from the asymmetrical region towards the second surface. | 08-21-2008 |
| 20090242479 | AROMATIC HALOSULFONYL ISOCYANATE COMPOSITIONS - The present invention provides a polymer composition comprising structural units derived from an aromatic halosulfonyl isocyanate having structure I | 10-01-2009 |
| 20130240438 | Blends of Sulfonated Block Copolymers And Particulate Carbon And Membranes, Films, And Coatings Comprising Them - Blends comprising a sulfonated block copolymer and particulate carbon are useful materials for membranes, films and coatings in applications which require high dimensional stability, high water vapor transport, high conductivity, and low flammability. The sulfonated block copolymer comprises at least two polymer end blocks A and at least one polymer interior block B wherein each A block contains essentially no sulfonic acid or sulfonate functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate functional groups based on the number of monomer units of the B block. | 09-19-2013 |
| 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 |
| 20140014576 | METHOD OF MANUFACTURING REVERSE OSMOSIS MEMBRANE, AND REVERSE OSMOSIS MEMBRANE MANUFACTURED THEREBY - There are provided a method of manufacturing a reverse osmosis membrane and a reverse osmosis membrane manufactured thereby. The method includes forming a polysulfone layer by applying a solution including a mixed solvent containing two or more solvents having different solubility parameter values to a surface of a porous support; and forming an active layer on the polysulfone layer. | 01-16-2014 |
| 20150076056 | DEVICE FOR USE IN FLUID PURIFICATION - The present disclosure relates to a device for use in fluid purification, particularly to a membrane for use in fluid purification, the membrane comprising a porous basal layer in the form of polysulfone (PSF); a multitude of multi-walled carbon nanotubes (CNTs) dispersed within the basal layer; and a top layer in the form of polyvinyl alcohol (PVA). The disclosure extends to a method of manufacturing the device. | 03-19-2015 |
| 20150114902 | METHOD OF MANUFACTURING REVERSE OSMOSIS MEMBRANE, AND REVERSE OSMOSIS MEMBRANE MANUFACTURED THEREBY - There are provided a method of manufacturing a reverse osmosis membrane and a reverse osmosis membrane manufactured thereby. The method includes forming a polysulfone layer by applying a solution including a mixed solvent containing two or more solvents having different solubility parameter values to a surface of a porous support; and forming an active layer on the polysulfone layer. | 04-30-2015 |
| 20150375181 | FLUORINATED POLYMER AND USE THEREOF IN THE PREPARATION OF HYDROPHILIC MEMBRANES (VI) - Disclosed is a fluorinated polymer of the formula: R—S—P, wherein R is a fluorocarbyl group, S is sulfur, and P is: (i) polyglycerol; (ii) poly(allyl glycidyl ether); (iii) a copolymer of glycidol and allyl glycidyl ether, the copolymer having one or more allyl groups; or (iv) poly(allyl glycidyl ether) or copolymer of glycidol and allyl glycidyl ether, wherein one more of the allyl groups have been replaced with a functional group as described herein. Also disclosed is a method of preparing the fluorinated polymer. The fluorinated polymer finds use in improving the hydrophilicity of porous hydrophobic membranes such as PTFE and PVDF. | 12-31-2015 |
| 20160101390 | MODIFICATION OF MEMBRANES WITH POLYDOPAMINE AND SILVER NANOPARTICLES FORMED IN SITU TO MITIGATE BIOFOULING - The present invention is directed to a method for modifying polymeric membranes to mitigate biofouling. More particularly, dopamine powder is dissolved in a buffer solution, and the membrane surface is exposed to the solution, resulting in the formation of a polydopamine thin film on the membrane. The surface of the polydopamine-modified membrane is then exposed to AgNO | 04-14-2016 |
