Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
Patents for B01D 71 - Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor (23,060)
04/1991
04/17/1991EP0422506A1 Membranes formed from unsaturated polyimides
04/17/1991EP0422304A1 Thermally crosslinked nitrile rubber membranes, their preparation and use for aromatics separation
04/17/1991EP0422251A1 Method of producing modified porous membrane
04/17/1991EP0408688A4 Porous membranes
04/17/1991CA2026895A1 Polyester membranes for aromatics/saturates separation
04/17/1991CA2026894A1 Crosslinked copolymers of aliphatic polyester diols and dianhydrides
04/17/1991CA2020532A1 Membrane process for separation of organic liquids
04/16/1991US5008385 Cellulose derivatives and fibers and membranes made therefrom
04/16/1991US5008352 Substituted aromatic polymers
04/16/1991US5008094 Alkali or alkaline earth metal silicates with specific molar ratios and containing tetramethylammonium ion
04/16/1991US5007945 High gas permselectivities, useful in various gas separation
04/16/1991US5007944 Treating polyetherimide membrane with solvent or swelling agent
04/12/1991CA2026969A1 Membranes formed from unsaturated polyimides
04/11/1991CA2027021A1 Surfactant treatment of aromatic polyimide gas separation membranes
04/11/1991CA2027008A1 Production of aromatic polyimide membranes
04/11/1991CA2027006A1 Phenylindane-containing polyimide gas separation membranes
04/11/1991CA2027005A1 Surfactant treatment of polyimide gas separation membranes
04/10/1991EP0421916A2 Composite membranes and processes using them
04/10/1991EP0421676A1 Interfacially polymerized membranes, and reverse osmosis separation of organic solvent solutions using them
04/10/1991EP0421137A1 Gas separation membrane and process
04/10/1991EP0420847A1 Membrane filtration apparatus and method of making a membrane filtration unit
04/09/1991US5006576 Ion exchange membrane
04/09/1991US5006287 Affinity membranes having pendant hydroxy groups and processes for the preparation and use thereof
04/09/1991US5006256 Affinity membranes having pendant hydroxy groups and processes for the preparation and use thereof
04/09/1991US5006255 Selective permeable membrane for separation of liquid solution
04/09/1991US5006248 Titanium and zirconium oxides, sol-gel process
04/09/1991US5006247 Ultrafiltration
04/09/1991CA1282565C Process for surface modifying a microporous membrane
04/06/1991CA2026054A1 Interfacially polymerized membranes for the reverse osmosis separation of organic solvent solutions
04/04/1991WO1991004223A1 Gas separation by semi-permeable membranes
04/03/1991EP0419926A1 Thermoplastic alloys with polyesters and polyestercarbonates based on substituted cycloalkylidenebisphenols
04/03/1991EP0180599B1 High flux membrane
04/02/1991US5004861 Process for pervaporization using membrane separating means
04/02/1991US5004544 Reaction bonded silicon nitride filtration membranes
04/02/1991US5004543 Charge-modified hydrophobic membrane materials and method for making the same
04/02/1991CA1282244C Method of producing effective porous glass shapes
03/1991
03/27/1991EP0419396A1 Hydrophilic membrane for use in ultrafiltration and method of preparation
03/27/1991EP0419007A1 Countercurrent dehydration by hollow fibers
03/27/1991EP0418883A1 Separation of fluids using polyimidesiloxane membrane
03/27/1991EP0418432A1 Supported hydrophilic membrane
03/26/1991US5002590 Gases, support fibers of high air permeability
03/22/1991CA2025813A1 Separation of fluids using polyimidesiloxane membrane
03/21/1991WO1991003312A1 Process for preparing a microfiltration membrane and membrane so obtained
03/20/1991EP0418155A2 Porous material of polytetrafluoroethylene and process for producing the same
03/20/1991EP0418082A1 Membrane fabrication
03/20/1991EP0417908A2 Membrane
03/20/1991EP0417770A1 Polyimide membranes and their use for gas separation
03/20/1991EP0417525A1 Membrane filter reinforced with textile material, process for its manufacture and use thereof
03/20/1991EP0417462A1 Films from polyarylene sulfide mixtures and their use for gas separation
03/20/1991EP0417287A1 Porous membrane and process for its manufacture
03/20/1991CN1049981A Production of porous filtering film of diacetate cellulose
03/20/1991CN1049980A Supported hydrophilic membrane
03/20/1991CN1012039B Composite membranes for enhanced fluid separation
03/19/1991US5000848 Rotary filtration device with hyperphilic membrane
03/19/1991US5000763 Process for separating hydrogen from gas mixtures using a semi-permeable membrane consisting predominantly of polycarbonates derived from tetrahalobisphenols
03/16/1991WO1991004092A1 Membrane fabrication
03/16/1991CA2040409A1 Membrane fabrication
03/16/1991CA2025209A1 Membrane
03/14/1991DE4027479A1 Cellulose membrane prodn. by culturing Acetobacter
03/13/1991EP0416752A2 Polyurethane membranes and their use for the separation of aromatics from non-aromatics
03/13/1991EP0416565A1 Method for producing deoxycelluloses
03/13/1991EP0416470A2 Process for making cellulose membranes from bacteria produced cellulose
03/13/1991EP0416377A2 Cellulosic membranes
03/13/1991CN1049799A High flux semipermeable membranes
03/13/1991CA2024626A1 Polyimide membranes and their use for gas separation
03/12/1991US4999110 Regenerated cellulose membrane formed by esterification with organic acids for blood compatibility in dialysis
03/12/1991CA1281474C Polytrialkylgermylpropyne polymers and membranes
03/07/1991DE4028356A1 Open-pore polysulphone-amide micro:filtration membrane - by casting film from soln. contg. polymer, pptn. agent with air at 20 deg C or above, and coagulating in a pptn. bath
03/06/1991CA2024575A1 Hydrophilic membrane for use in ultrafiltration or microfiltration and method of preparation
03/06/1991CA2020511A1 Gas separation membrane and process
03/05/1991US4997935 Ethers, esters
03/05/1991US4997906 Crosslinked copolymers of aliphatic polyester diols and dianhydrides
03/05/1991US4997676 Microporous matrix with precipitate, pores, channels
03/05/1991US4997462 Pervaporation method of selectively separating water from an organic material aqueous solution through aromatic imide polymer asymmetric membrane
03/05/1991CA2007799A1 Supported hydrophilic membrane
03/01/1991WO1991003311A1 High flux semipermeable membranes
02/1991
02/27/1991EP0414098A2 Filter element and method and device for its production
02/26/1991CA1280564C Hollow fiber
02/20/1991EP0413624A1 Gas separation membrane
02/20/1991EP0413552A1 Asymmetric porous polyamide membranes
02/20/1991EP0413415A1 Carboxylic acids and derivates thereof
02/20/1991EP0413148A2 Polycarbonate gas separation membranes and processes for making and using the same
02/20/1991CN1049297A Microporous membranes
02/19/1991US4994095 Semipermeable membranes based on specific 4,4'-(1H-alkylidene)bis[2,3,6-trialkylphenol]type polyesters
02/19/1991CA1280412C Cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same
02/19/1991CA1280262C Asymmetric semi-permeable membrane having high salt rejection
02/16/1991WO1991002577A1 Blotting methods using polyaldehyde activated membranes
02/16/1991CA2059549A1 Blotting methods using polyaldehyde activated membranes
02/16/1991CA2021579A1 Asymmetric porous polyamide membranes
02/15/1991CA2023154A1 Gas separation membrane
02/13/1991EP0412882A1 Gas separation membrane
02/13/1991EP0412881A1 Gas separation membrane
02/13/1991CN1049109A Semipermeable membranes based on specified tetrabromobisphenol type polyesters
02/13/1991CN1049108A Extrusion of hollow fibre membranes
02/12/1991US4992485 Microporous peek membranes and the preparation thereof
02/12/1991US4992178 Inorganic ultrafiltration of microfiltration membrane modified by a hydrophilic polymer, its preparation process and its use for the separation of proteins
02/12/1991US4992176 Dehydration of organic oxygenates
02/12/1991US4992175 Method for improving the separation properties of semi-permeable membranes and membranes accordingly improved
02/12/1991US4992172 Polyaldehyde activation microporous membrane
02/12/1991CA2023124A1 Gas separation membrane
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