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21. 发明专利

JPH0365223A FILTER MATERIAL HAVING BACTERICIDAL PROPERTY 失效
公开(公告)号：JPH0365223A
公开(公告)日：1991-03-20
申请号：JP19985489
申请日：1989-08-01
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , TAKAHASHI HIROSHI , TAKEHATA KOJI
IPC分类号： B01D65/02 , B01D39/14 , B01D69/00 , B01D71/32 , B01D71/40
摘要： PURPOSE:To obtain a highly reliable and efficient filter material having a bactericidal, antibacterial and fungicidal property by forming a structure comprising a porous membrane having through holes and consisting of an org. polymer and a filter layer of disinfectant metal formed in the small holes. CONSTITUTION:There is used a porous membrane consisting of an org. polymer having the pores substantially vertically formed relative to one side face thereof with an average size of 0.2mum-10mum in diameter, very small holes of 35-90% opening rate and voids of 50-95%. As this org. polymer, the polymer of (meth) acrylic acid ester or blended with the other polymer or fluorinated polyolefin, etc., are used. The filter layer composed of disinfectant metal is formed in the small hole of the porous membrane. The filter layer is formed of any one of silver, copper, tin, zinc, their salts and the compounds into a thin membrane layer or this membrane layer is arranged and formed in a state of being retained by inorg. particles such as alumina and silica gel. This method gives a highly bactericidal property with a low pressure loss and a high reliability.

22. 发明专利

JPH02103237A ACRYLONITRILE-BASE FILM-SHAPED MATERIAL 失效
公开(公告)号：JPH02103237A
公开(公告)日：1990-04-16
申请号：JP25767988
申请日：1988-10-13
申请人： MITSUBISHI RAYON CO
发明人： TAKAHASHI HIROSHI , SUGIMORI TERUHIKO , AOKI KUNIHIRO
IPC分类号： C08F20/00 , C08F20/44 , C08F265/08 , C08J5/18
摘要： PURPOSE:To provide a film-shaped material having excellent barrierness, weatherability, heat-resistance, chemical resistance, transparency and strength and composed of an acrylonitrile-base polymer having high content of acrylonitrile unit, low molecular branching and high molecular weight. CONSTITUTION:The objective film-shaped material having a thickness of 0.5-500mum (preferably 1-100mum) and a breaking strength of >=20kg/mm (preferably >=25kg/mm ) in at least one specific direction can be produced by drawing an undrawn film produced by the cast-drawing, etc., of an acrylonitrile polymer (preferably homopolymer) having an acrylonitrile unit content of >=80wt.% (preferably >=95wt.%) and a weight-average molecular weight of >=300,000 (preferably >=500,000) and satisfying the formula (Ne is molar fraction of a polymerization initiator fragment bonded to a polymer terminal; Mw is weight-average molecular weight). The casting solvent is e.g., dimethylformamide.

23. 发明专利

JPH02102233A ACRYLONITRILE FILM 失效
公开(公告)号：JPH02102233A
公开(公告)日：1990-04-13
申请号：JP25538688
申请日：1988-10-11
申请人： MITSUBISHI RAYON CO
发明人： TAKAHASHI HIROSHI , SUGIMORI TERUHIKO , AOKI KUNIHIRO
IPC分类号： C08J5/18 , C08F20/00 , C08F20/44 , C08L33/18
摘要： PURPOSE:To improve barrier properties, mechanical properties, weatherability, luster and heat resistance and to make the film useful as packaging materials by controlling an oxygen permeability const., a breaking strength and a breaking elongation each in a specified range. CONSTITUTION:A film of polyacrylonitrile with an oxygen permeability const. of 3X10 cm .cm/cm .sec.cm.Hg or smaller, a breaking strength of 5kg/mm or smaller, a breaking elongation of 10% or larger, a thickness of 0.5-500mum and a wt.-average MW of 500,000 or larger is obtd. by polymerizing acrylonitrile in a solvent consisting of dimethylacetamide and water in the presence of an initiator to prepare a dope and making it into a film by casting.

24. 发明专利

JPS63278945A POROUS MEMBRANE 失效
公开(公告)号：JPS63278945A
公开(公告)日：1988-11-16
申请号：JP11499987
申请日：1987-05-12
申请人： MITSUBISHI RAYON CO
发明人： ITO HAJIME , TAKAHASHI HIROSHI , TAKEHATA KOJI
IPC分类号： C08J9/28 , B01D71/24 , B01D71/64 , D01D5/247 , D01F6/44 , D01F6/94
摘要： PURPOSE:To obtain a porous membrane having a high water flux, excelling in heat resistance, chemical resistance, storage stability and handleability and suited for treatment of condensate, treatment of water for supercritical pressure boilers, comprising a mixture of a specified polyether-imide with a polybutadiene. CONSTITUTION:A saturated vapor or mist-containing vapor of a poor solvent which is miscible with component B and does not dissolve component A (e.g., water) is fed at a rate of 0.1-1,000mg/sec.cm and forcibly contacted with at least either surface of a thin-film object formed from a 2-40wt.% concentration polymer solution formed by dissolving a mixture (A) of 99-90pts.wt. polyether-imide (a) having a weight-average MW >=30,000 and repeating units of the formula (wherein n is 1-7), obtained by polycondensing phenoxyphenyldicarboxylic acid with phenylenediamine, with 1-10pts.wt. polybutadiene (b) of a weight-average MW of 1,000-10,000 in a good solvent (B) such as N-methylpyrrolidone to obtain a porous membrane of an average pore diameter =50mu and a water flux >=25ml/cm .min.10psi.

25. 发明专利

JPS6320339A PRODUCTION OF POROUS MEMBRANE 失效
公开(公告)号：JPS6320339A
公开(公告)日：1988-01-28
申请号：JP16380086
申请日：1986-07-14
申请人： MITSUBISHI RAYON CO
发明人： TAKAHASHI HIROSHI , WAKABAYASHI SHIGEO , ITO HAJIME
IPC分类号： C08J9/26 , B01D67/00
摘要： PURPOSE:To obtain the title membrane having a sharp pore diameter distribution and suited for precision filtration without causing any environmental pollution, by oxidizing a molding of a composition obtained by dispersing a C=C unsaturated bond-containing polymer in a water-insoluble polymer having no C=C unsaturated bond in the main chain and washing the product with water. CONSTITUTION:A uniform composition is obtained by melt-kneading 90-10pts. wt. water-insoluble polymer having no C=C unsaturated bond in the main chain and being inert to an oxidizing agent (e.g., polyacrylonitrile) with 10-90 pts.wt. polymer (B) having a C=C unsaturated bond in the main chain (e.g., polybutadiene) which can be oxidized more easily than component A can and whose oxide can be removed by water washing after oxidation. A molding obtained by molding it into, for example, a flat film of a thickness of 20-1,000mu or a hollow yarn is oxidized with an oxidizing agent (C) such as ozone, and component B oxidatively degraded into a form which can be removed by water washing is removed by selective dissolution to obtain the title film having a pore diameter of 0.1-10mu and a sharp pore diameter distribution.

26. 发明专利

JPS62155858A HOLLOW YARN MODULE 失效
公开(公告)号：JPS62155858A
公开(公告)日：1987-07-10
申请号：JP29318985
申请日：1985-12-27
申请人： MITSUBISHI RAYON CO
发明人： YOSHIDA HARUHIKO , KAMO JUN , HIRAI TAKAYUKI , MUKAI TAKUMA , TAKAHASHI HIROSHI
IPC分类号： F28F9/04 , A61M1/18 , B01D63/02 , F28D7/02 , F28D7/16

27. 发明专利

JPS60255115A HOLLOW YARN FILTER MODULE 失效
公开(公告)号：JPS60255115A
公开(公告)日：1985-12-16
申请号：JP11094384
申请日：1984-06-01
申请人： MITSUBISHI RAYON CO
发明人： TAKEMURA TOORU , YOSHIDA HARUHIKO , TAKAHASHI HIROSHI
IPC分类号： B01D63/02
摘要： PURPOSE:To obtain the titled hollow yarn filter module with high availability of hollow yarn filter membranes and suitable for purifying water contg. metallic ions and colloidal materials in large quantities by regulating the ratio of the cross-sectional area occupied by the hollow yarn filter membranes to the inner cross-sectional area of an annular member within a specified range when the module is cut in the vertical direction. CONSTITUTION:The setting density of hollow yarn filter membranes 3 which are fixed at the inner surface of an annular member 1 by a fixing member 2, namely, the ratio R of the sum Sf of the cross-sectional areas of the hollow yarn filter membranes 3 to the inner cross-sectional area Sr of the annular member 1 when the annular member 1 is cut in the direction vertical to the hollow yarn filter member 3 is regulated to satisfy 0.11

28. 发明专利

JPS60244306A HOLLOW YARN FILTER MODULE 失效
公开(公告)号：JPS60244306A
公开(公告)日：1985-12-04
申请号：JP10057284
申请日：1984-05-21
申请人： MITSUBISHI RAYON CO
发明人： TAKEMURA TOORU , YOSHIDA HARUHIKO , TAKAHASHI HIROSHI , FUJINAGA YOSHIKAZU
IPC分类号： B01D63/02
摘要： PURPOSE:To develop a hollow yarn filter module excellent in filtering efficiency, by providing a filtrate gathering chamber to one end part of a filter member, which is constituted by linearly arranging a large number of hollow yarn filter membranes having openings at both end thereof and providing piping for allowing the filtrate in said chamber to be confluent to that from the other opening end. CONSTITUTION:A large number of porous hollow membranes 3 such as polyethylene hollow yarn membranes are linearly bundled and fixed to ring shaped members 1, 1' at both ends thereof by a fixing member 2 comprising polyurethane. A partition member 5 is fixed to one ring shaped member 1' of the filter member consisting of the hollow yarn filter membranes 3, the fixing member 2 and the ring shaped member 1 to form a filtrate gathering chamber 4. Filtrate piping 6, which allows the filtrate collected in the filtrate gathering chamber 4 to be confluent to that from the opening of one hollow yarn filter membranes 3, is arranged so as to pierce through the almost central part in both fixing members 2. By this method, the efficient hollow yarn filter module much in a filtering water amount for its small size is developed.

29. 发明专利

JPS60225612A HOLLOW YARN FILTER MODULE 失效
公开(公告)号：JPS60225612A
公开(公告)日：1985-11-09
申请号：JP8191084
申请日：1984-04-25
申请人： MITSUBISHI RAYON CO
发明人： TAKEMURA TOORU , YOSHIDA HARUHIKO , MUKAI TAKUMA , TAKAHASHI HIROSHI , FUJINAGA YOSHIKAZU
IPC分类号： G21C19/307 , B01D63/02 , G21C19/30
摘要： PURPOSE:To enhance the durable reliability of a hollow yarn filter module, by enhancing the bonding strength between a ring shaped member and the fixing member provided to the opening end of a hollow yarn filter membrane, by providing recessed parts and/or protruded parts to the inner surface of the ring shaped member. CONSTITUTION:In arranging a hollow yarn filter module in a water purifier, recessed parts and/or protruded parts are provided to the inner surface of a ring shaped member 1 functioning as a support member for supporting the whole of the module. The end parts of hollow yarn filter membranes 3 are fixed to the inner surface of the ring shaped member 1 and, in order to allow said membranes 3 to function as filter membranes, a fixing member 2, which functions as the partition member of water to be purified and purified water, is adhered to the hollow yarn filter membranes 3. A large number of the hollow yarn membranes 3 are fixed to the fixing member 2 in a state bundled in a U-shape while the opening ends thereof are held under an open state. By providing the recessed and protruded parts to the inner surface of the ring shaped member 1, the bonding strength between the ring shaped member 1 and the fixing member 2 is enhanced to a large extent by anchor effect or physical inlay effect.

30. 发明专利

JPH0639255A POLYSULFONE BASED POROUS MEMBRANE 失效
公开(公告)号：JPH0639255A
公开(公告)日：1994-02-15
申请号：JP11488992
申请日：1992-05-07
申请人： MITSUBISHI RAYON CO
发明人： TAKEHATA KOJI , TAKAHASHI HIROSHI , KAMO JUN
IPC分类号： B01D69/02 , B01D71/68
摘要： PURPOSE:To produce the effect of removing super fine particles or the like in a fluid by satisfying specific conditions of the equivalent pore diameter by average pore diameter pressure and water permeability in a polysulfone based porous membrane made of polysulfone based polymer. CONSTITUTION:In the polysulfone base porous membrane made of the polysulfone polymer, following equation between the equivalent pore diameter (d) by average pore diameter pressure and the water permeability WF is satisfied. (d) =3ml/min.cm .10psi. The polysulfone based polymer only having a compound expressed by a formula I in the repeating unit structure can be used and among the rest, one having a compound expressed by a formula II can be preferably used. Thus, the porous membrane is excellent in the efficiency of filtering

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