IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0718580
(1991-06-21)
|
발명자
/ 주소 |
- Waite Warren A. (Burlington MA) Viklund Hans I. (Marlboro MA)
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출원인 / 주소 |
- Ionics, Incorporated (Watertown MA 02)
|
인용정보 |
피인용 횟수 :
20 인용 특허 :
0 |
초록
▼
Semi-permeable membrane and membrane/support assemblies and systems for microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrodialysis, electrodeionization and piezodialysis filter systems are formed of polymer membranes (14), including fine particle moieties (24) or threads (16)
Semi-permeable membrane and membrane/support assemblies and systems for microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrodialysis, electrodeionization and piezodialysis filter systems are formed of polymer membranes (14), including fine particle moieties (24) or threads (16) of substantially water insoluble, oligodynamic bioactive (biostatic and/or biocidal) dispersed material. When these membranes systems are used in aqueous liquids the dispersed material dissolves slowly and provides a continuous biostatic and/or biocidal action over a long duration to counteract membrane fouling propensities of the system environment.
대표청구항
▼
A membrane system comprising: a semi-permeable membrane comprising as a dispersed component of at least a portion of its interior and/or surface at least one substantially water insoluble oligodynamic material selected from the group consisting of antimony, bismuth, copper, mercury, silver, tin, zin
A membrane system comprising: a semi-permeable membrane comprising as a dispersed component of at least a portion of its interior and/or surface at least one substantially water insoluble oligodynamic material selected from the group consisting of antimony, bismuth, copper, mercury, silver, tin, zinc, alloys thereof, and the substantially water insoluble oxides, hydroxides, inorganic salts, organic salts and soaps thereof, wherein said dispersed substantially water insoluble oligodynamic bioactive material is linked with said membrane, substantially without chemical bonding to said membrane. A process for producing a fouling resistant semi-permeable membrane comprising the steps of: a) forming a dispersion which comprises at least one semipermeable membrane precursor component and a substantially water insoluble oligodynamic biostatic and/or biocidal material selected from the group consisting of antimony, bismuth, copper, mercury, silver, tin, zinc, alloys of said metals, and substantially water insoluble oxides, hydroxides, inorganic salts, organic salts and soaps of said metals, b) forming said dispersion into a structural form selected from the group consisting of hollow fiber, tubular, block, rod and sheet forms, and c) solidifying said formed dispersion,
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