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1. 发明专利

JPH0852333A PRODUCTION OF AROMATIC POLYSULFONE COMPOSITE SEMIPERMEABLE MEMBRANE 失效
公开(公告)号：JPH0852333A
公开(公告)日：1996-02-27
申请号：JP6449095
申请日：1995-03-23
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI , KAZUSE NORITAKA , SHINTANI TAKUJI , SHIMAZU AKIRA
IPC分类号： B01D69/08 , B01D71/38 , B01D71/68
摘要： PURPOSE:To produce an aromatic polysulfone composite semipermeable membrane improved in transmission stability, pressure resistance and flexibility. CONSTITUTION:A porous membrane composed of aromatic polysulfone is coated or impregnated with an aq. soln. of water-soluble polyvinyl alcohol containing an inorg. alkaline compd. and the coated or impregnated membrane is heated and dried not only to make water-soluble polyvinyl alcohol water-insoluble but also to almost uniformly bond polyvinyl alcohol made water-insoluble to the surface of the porous membrane and the inner surfaces of the pores of the porous membrane.

2. 发明专利

JPH0648980A NEW ACID CHLORIDE 失效
公开(公告)号：JPH0648980A
公开(公告)日：1994-02-22
申请号：JP20238492
申请日：1992-07-29
申请人： NITTO DENKO CORP
发明人： HACHISUGA HISAO , KOJIMA KATSUHIDE , NAKAZONO YUTAKA , SHIMIZU MITSURU , HIROSE MASAHIKO , KIHARA YASUO , MAEDA MASATOSHI , IKEHATA HISASHI , MATSUMOTO KENJI
IPC分类号： C07C51/083 , C07C61/29
摘要： PURPOSE:To obtain a new acid chloride useful as a raw material for producing polymers such as cross-linking agents, esterification agents, amidation agents, etc. CONSTITUTION:Bicyclo[2,2,2]octo-citric(2alpha,3beta,5alpha,6beta)-tetr acarbonyl-chloride (C12H8 O4Cl4) of formula I. The compound of formula I is obtained by hydrolying, e.g. a compound of formula II to afford a carboxylic acid salt or carboxylic acid and reacting the acid salt or the acid with a chlorinating agent in the presence of a catalyst such as dimethylformamide at -70-+250 deg.C for 10min to 18hr.

3. 发明专利

JPH0639254A COMPOSITE REVERSE OSMOTIC MEMBRANE 失效
公开(公告)号：JPH0639254A
公开(公告)日：1994-02-15
申请号：JP19689492
申请日：1992-07-23
申请人： NITTO DENKO CORP
发明人： HIROSE MASAHIKO , MATSUMOTO KENJI , SHIMIZU MITSURU , HACHISUGA HISAO , IKEHATA HISASHI , KIHARA YASUO , MAEDA MASATOSHI , NAKAZONO YUTAKA , KOJIMA KATSUHIDE
IPC分类号： B01D71/56
摘要： PURPOSE:To provide a composite reverse osmotic membrane for selectively separating components in a liquid mixture and having high salt stop-off factor together with high chlorine based disinfectant resistance. CONSTITUTION:In the composite reverse osmotic membrane composed of a thin membrane and a fine porous supporting membrane to support the thin membrane, the thin membrane is composed essentially of a polyamide made of an amine component containing at least one kind selected from a group of amine compounds essentially of monomer having at least two primary or/and secondary amino groups and an acid halide component essentially of two functional acid halide component containing at least one kind selected from a group of two functional acid halide compound essentially of monomer having at least one naphthalene ring.

4. 发明专利

JPH0639253A COMPOSITE REVERSE OSMOTIC MEMBRANE 失效
公开(公告)号：JPH0639253A
公开(公告)日：1994-02-15
申请号：JP19689392
申请日：1992-07-23
申请人： NITTO DENKO CORP
发明人： HIROSE MASAHIKO , MATSUMOTO KENJI , SHIMIZU MITSURU , HACHISUGA HISAO , IKEHATA HISASHI , KIHARA YASUO , MAEDA MASATOSHI , NAKAZONO YUTAKA , KOJIMA KATSUHIDE
IPC分类号： B01D71/56
摘要： PURPOSE:To provide a composite reverse osmotic membrane for selectively separating components in a liquid mixture and having high salt stop-off factor together with high chlorine based disinfectant resistance. CONSTITUTION:In the composite reverse osmotic membrane composed of a thin membrane and a fine porous supporting membrane to support the thin membrane, the thin membrane is composed essentially of a polyamide made of an amine component containing at least one kind selected from a group of amine compounds essentially of monomer having at least two primary or/and secondary amino group and an acid halide component essentially of two functional acid halide component containing at least one kind selected from a group of two functional acid halide compound essentially of monomer having at least two benzene rings.

5. 发明专利

JPH05309358A 失效
公开(公告)号：JPH05309358A
公开(公告)日：1993-11-22
申请号：JP14213192
申请日：1992-05-06
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI
IPC分类号： B01D19/00 , B01D61/36 , C02F1/20 , C02F1/58
摘要： PURPOSE:To provide a treatment method to obtain tap water from which halogenated hydrocarbons and volatile malodor are removed while the concentration of remaining chlorine is kept. CONSTITUTION:Tap water in which halogenated hydrocarbons and malodorous components are dissolved is brought into contact with one side of water impermeable membrane and the other side is kept in decreased pressure and a gas for purging is supplied, so that halogenated hydrocarbons and volatile malodorous components are made to pass the membrane selectively and tap water from which the halogenated hydrocarbons and volatile malodorous components are removed is obtained in the impermeable side, and at the same time, the passed halogenated hydrocarbons and volatile malodorous components are removed and recovered.

6. 发明专利

JP2572015B2 失效
公开(公告)号：JP2572015B2
公开(公告)日：1997-01-16
申请号：JP6449095
申请日：1995-03-23
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI , KAZUSE NORITAKA , SHINTANI TAKUJI , SHIMAZU AKIRA
IPC分类号： B01D69/08 , B01D71/38 , B01D71/68

7. 发明专利

JPH078764A FILM SEPARATION DEVICE 失效
公开(公告)号：JPH078764A
公开(公告)日：1995-01-13
申请号：JP18003893
申请日：1993-06-25
申请人： NITTO DENKO CORP
发明人： NISHIDA YUJI , SHINAGAWA MASAKAZU , IKEHATA HISASHI , BEPPU MASASHI
IPC分类号： B01D63/08
摘要： PURPOSE:To prevent the adhesion of a gel by vibration of a film generated following the raw liquid flow and protect the breakage of the film effectively by fixing flat film structures having a filtrate flow path material between flat films at both width ends, forming the width of the flat film structures wider than the interval of both fixing points and setting the structures in a raw liquid tank. CONSTITUTION:Gas-liquid mixed flow composed of jetting gas out of an air diffusion pipe 7 and raw liquid is flowed at high speed between flat film structures A, A in the liquid treatment, and as saggings are formed on the flat film structures A, amplitude movement is generated on the flat film structures A to prevent the adhesion of a gel to the film surface. In that case, the width of the flat film structures is formed wider than the interval of both fixing points of the flat film structures to bring the films into contact with one another during the amplitude movement and prevent the adhesion of the gel. The air diffusion pipe 7 is installed and the raw liquid is revolved by jet gas from the air diffusion pipe, and the raw liquid can be flowed by a raw liquid circulating piping 83 and a circulating pump 81.

8. 发明专利

JPH06296842A PRODUCTION OF LOW PRESSURE HIGH-PERMEABLE COMPOSITE REVERSE OSMOSIS MEMBRANE 失效
公开(公告)号：JPH06296842A
公开(公告)日：1994-10-25
申请号：JP8612393
申请日：1993-04-13
申请人： NITTO DENKO CORP
发明人： HIROSE MASAHIKO , SHIMIZU MITSURU , HACHISUGA HISAO , MATSUMOTO KENJI , IKEHATA HISASHI , KIHARA YASUO , MAEDA MASATOSHI , NAKAZONO YUTAKA , KOJIMA KATSUHIDE
IPC分类号： B01D71/56 , B01D71/82
摘要： PURPOSE:To produce a composite reverse osmosis membrane having high permeability under a low pressure and capable of selectively separating the component of a liquid mixture. CONSTITUTION:In a method for producing a composite reverse osmosis membrane having a polyamide skin layer obtained by applying a solusion containing a compd. having two or more reactive amino groups to a porous support and subsequently bringing an org. solvent containing a polyfunctional acid halide compd. into contact with the phase of the aqueous soln. to perform interfacial reaction, a quaternary ammonium salt is added to the aqueous soln. and the pH of the aqueous soln. is set to 11 or more and heat treatment is performed at 100 deg.C or higher after interfacial reaction.

9. 发明专利

JPH05123549A WATER PERMSELECTIVE PERVAPORATION MEMBRANE 失效
公开(公告)号：JPH05123549A
公开(公告)日：1993-05-21
申请号：JP28828091
申请日：1991-11-05
申请人： NITTO DENKO CORP , TOKYO ELECTRIC POWER CO
发明人： KAWASHIMA TOSHIYUKI , IKEHATA HISASHI , IWAMA AKIO , FURUKAWA KAORU , KURODA SHOICHI , SHIBATA SOICHIRO , SHIMAMURA NORIYUKI
IPC分类号： B01D61/36 , B01D71/08 , B01D71/70
摘要： PURPOSE:To provide the subject membrane excellent in both of separation capacity and permeability using a pervaporation method. CONSTITUTION:A first dense layer composed of chitosan and a second dense layer formed by crosslinking a crosslinkable silicone resin are provided on a porous support membrane and the first dense layer is covered with the second dense layer.

10. 发明专利

JPH04284829A MEMBRANE MODULE 失效
公开(公告)号：JPH04284829A
公开(公告)日：1992-10-09
申请号：JP5131591
申请日：1991-03-15
申请人： TOKYO ELECTRIC POWER CO , NITTO DENKO CORP , MITSUBISHI HEAVY IND LTD
发明人： KURODA SHOICHI , SHIBATA SOICHIRO , SHIMAMURA NORIYUKI , IKEHATA HISASHI , IWAMA AKIO , KAWASHIMA TOSHIYUKI , NIHEI TAKESHI , TERAKURA SEIICHI , EITO TORU
IPC分类号： B01D61/36 , B01D63/00 , B01D63/08
摘要： PURPOSE:To reduce the required area of a pervaporation membrane by keeping the good transmission capacity of the pervaporation membrane by setting the temp. of a raw solution to the optimum temp. CONSTITUTION:First, second and third plates 2a, 2b, 3 are parallelly arranged between a plurality of flat pervaporation membranes 1 arranged in parallel and a raw solution flow passage 6 is formed between the pervaporation membrane 1 and the first plate 2a, and a reheating medium flow passage 8 is formed between the first and second plates 2a, 2b. By this constitution, a raw solution is heated by a reheating medium through the first plate 1a and the pervaporation membranes 1 are well kept in transmission capacity and, therefore, the required areas of the pervaporation membranes 1 can be reduced.

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