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1. 发明专利

JPH10174850A TREATMENT OF HOLLOW-FIBER MEMBRANE 失效
公开(公告)号：JPH10174850A
公开(公告)日：1998-06-30
申请号：JP33673396
申请日：1996-12-17
申请人： KURARAY CO
发明人： KAKIUCHI TOMOKI , KAWADA ICHIRO , OKAMOTO TAKEHIKO
IPC分类号： A61M1/18 , B01D67/00 , B01D69/08
摘要： PROBLEM TO BE SOLVED: To reduce the shrinkage of a hollow-fiber membrane when heated by forming the hollow-fiber membrane by spinning, applying underwater constant-length wet heat treatment to the membrane, then removing the remaining solvent and drying the membrane under the conditions shown by specified inequalities. SOLUTION: When a hydrophobic membrane or the one made hydrophilic for treating body fluids is produced, the membrane is formed by wet or dry-wet solidification, and then underwater constant-length wet heat treatment and further constant-length wet heat treatment are applied under the conditions shown by inequalities I, II and III, where RH is the relative humidity (%) of the treating atmospher. T is the dry heat treating temp. ( deg.C), Tg is the glass- transition temp. ( deg.C) of the membrane, and (t) is the dry heat treating time (min). The under water constant-length wet heat treatment and constant-length wet heat treatment are perfoemed at 80-90 deg.C for >=2min. The material of the membrane is not specially limited, a high molecular compd. used in the medical field can be used, and a material consisting essentially of polysulfone, for example, is preferably used. Further, the hollow-fiber membrane contg. a hydrophilic polymer is preferably used.

2. 发明专利

JPH0929078A PRODUCTION OF HOLLOW YARN MEMBRANE 失效
公开(公告)号：JPH0929078A
公开(公告)日：1997-02-04
申请号：JP18253495
申请日：1995-07-19
申请人： KURARAY CO
发明人： SATO YOSHIO , KAKIUCHI TOMOKI , OKAMOTO TAKEHIKO
IPC分类号： B01D69/08 , D01F6/00
摘要： PROBLEM TO BE SOLVED: To uniformize the pore diameter of the inner surface of a membrane by using an inorg. salt-containing solution as an internal coagulation soln. when a hollow yarn membrane is produced by extruding a soln. consisting of a high- molecular polymer, a solvent and a non-solvent and/or a swelling agent from an annular nozzle. SOLUTION: When a hollow yarn membrane is produced by extruding a soln. consisting of a high-molecular polymer, a solvent and a non-solvent and/or a swelling agent from an annular nozzle by a dry or wet method, a soln. containing an inorg. salt is used as an internal coagulation soln. As the inorg. salt, any inorg. salt soluble in a solvent used in a membrane forming raw soln. may be used and a salt of alkali metal, concretely, a lithium salt such as lithium chloride or lithium bromide is used. As the high-molecular polymer, polysulfone, polyether sulfone or polyamide is designated and, as the solvent, N,N- dimethylformamide(DMF) or N,N-dimethylacetamide(DMAc) is designated.

3. 发明专利

JP2519831B2 失效
公开(公告)号：JP2519831B2
公开(公告)日：1996-07-31
申请号：JP30486590
申请日：1990-11-09
申请人： KURARAY CO
发明人： KOMATSU KENSAKU , OKAMOTO TAKEHIKO , KUSUDO OSAMU
IPC分类号： B01D71/38 , B01D71/68 , B01D71/82

4. 发明专利

JPH08182756A MEDICAL MATERIAL AND POLYVINYL ALCOHOL POLYMER WITH PHOSPHORYLCHOLINE GROUP 失效
公开(公告)号：JPH08182756A
公开(公告)日：1996-07-16
申请号：JP34041694
申请日：1994-12-29
申请人： KURARAY CO
发明人： SUHARA GYOKKO , SHIGEHISA TAKAHIDE , OKAMOTO TAKEHIKO , HIGAKI TATSUHIKO , INAI KOJI
IPC分类号： A61M1/16 , A61L29/00 , A61L33/00 , A61M1/18 , C08F8/40 , C08L29/02 , C08L29/04
摘要： PURPOSE: To improve blood compatibility by constituting a medical material with a polymer wherein a compd. with a phosphorylcholine group is bonded as a side chain group to a main chain consisting of a polyvinyl alcohol polymer. CONSTITUTION: A medical material is formed by bonding a compd. with a phosphorylcholine group on an article with a specified shape and/or structure prepd. in advance by using a polyvinyl alcohol polymer (PVA polymer). In another way, it may be prepd. by using a polymer wherein a side chain with a phosphorylcholine group is bonded on a main chain consisting of a PVA polymer as a raw material. In addition, a base material may be coated with this polymer. In this case, the concn. of the phosphorylcholine group is set to be at least 8×10 /cm . In addition, a polymer prepd. by graft-polymn. of an unsatd. monomer with a phosphorylcholine group on the main chain consisting of a PVA polymer can be also used.

5. 发明专利

JPH05168699A TREATING DEVICE FOR ASCITES 失效
公开(公告)号：JPH05168699A
公开(公告)日：1993-07-02
申请号：JP32368591
申请日：1991-11-11
申请人： KURARAY CO
发明人： NAKAJI SHUHEI , HORIGUCHI JUNKO , OKAMOTO TAKEHIKO
IPC分类号： A61M1/00 , A61M1/36
摘要： PURPOSE:To provide the treating device for ascites which can be easily and safely executed in any-place without using a pump. CONSTITUTION:This treating device for the ascites is constituted by connecting a filter device 3, a concentrating device 5 and a bag 7 for recovering the ascites in this order via conduits so as to have differences in height successively from an ascites storage bag 1 provided in the upper part, providing a flow rate control means 10 on a pipe for leading out the recovered ascites discharged from the concentrating device 5, and is constituted to filter and concentrate the ascites led out of the ascites storage bag 1 by a fall.

6. 发明专利

JPH0440053B2 失效
公开(公告)号：JPH0440053B2
公开(公告)日：1992-07-01
申请号：JP25964484
申请日：1984-12-07
申请人： KURARAY CO
发明人： OKAMOTO TAKEHIKO , OOMORI AKIO
IPC分类号： B01D46/54 , B01D61/14

7. 发明专利

JPH0445830A PRODUCTION OF CONJUGATE HOLLOW-FIBER MEMBRANE 失效
公开(公告)号：JPH0445830A
公开(公告)日：1992-02-14
申请号：JP15116390
申请日：1990-06-08
申请人： KURARAY CO
发明人： KOMATSU KENSAKU , OKAMOTO TAKEHIKO
IPC分类号： B01D67/00 , B01D69/08 , B01D69/12 , D01D5/24 , D01F6/00 , D01F6/76 , D01F8/16
摘要： PURPOSE:To efficiently obtain a porous hollow-fiber membrane by concentrically extruding two kinds of spinning solns. of membrane forming resin from the intermediate and outer nozzle parts of a nozzle, discharging the concentrically extruded solns. from the inner nozzle part and bringing the solns. into contact with a liq. coagulant. CONSTITUTION:Two kinds of spinning solns. are respectively discharged from the intermediate nozzle part 2 and outer nozzle part 3 of the three-pipe nozzle 1, and mutually diffused at their interface to prevent the separation of the interface. The length of the laminating zone 5 varies with the kind of the soln. and is ordinarily controlled to >=1mm. The length of the zone 5 is increased as the solns. become more incompatible and unstable. By this method, a porous hollow-fiber membrane having high water permeability and functionality and capable of being used for industrial and medical purposes is efficiently produced.

8. 发明专利

JPH01189306A WATER PURIFIER 失效
公开(公告)号：JPH01189306A
公开(公告)日：1989-07-28
申请号：JP1332788
申请日：1988-01-22
申请人： KURARAY CO
发明人： KUSUDO OSAMU , OKAMOTO TAKEHIKO , SUMINA SHOJI
IPC分类号： C02F1/44 , B01D61/14 , B01D61/18 , B01D61/20 , B01D61/22 , B01D61/54 , B01D63/02
摘要： PURPOSE:To eliminate the development of unpleasant taste and odor even when the operation of the title purifier is resumed after long nonuse by arranging a cathode plate and an anode plate in a membrane module in opposition to each other with a hollow yarn membrane in between, and applying a DC current between both electrode plates to prevent the propagation of bacteria in the membrane module. CONSTITUTION:Many U-shaped hollow yarn membranes with the end opened and fixed with an adhesive are bundled, or many hollow yarn membranes with one end opened and the other end sealed with an adhesive are arranged in a housing to form an external-force full filtration-type module. The cathode plate 30 and the anode plate 31 are fixed on the inner wall of the housing F in opposition to each other, and connected to a dry battery 32 housed in a recess 33 on the side wall of the housing F through lead wires 34 and 35. When a low current is applied between the cathode plate 30 and the anode plate 31, the bacteria in the membrane module C are sterilized, and hence the propagation of bacteria can be prevented even when the water purifier is not used for a long time.

9. 发明专利

JPS63315106A EQUIPMENT FOR FILTRATION 失效
公开(公告)号：JPS63315106A
公开(公告)日：1988-12-22
申请号：JP10859488
申请日：1988-04-29
申请人： KURARAY CO
发明人： OKANO YOSHIHIRO , OKAMOTO TAKEHIKO , OMORI AKIO
IPC分类号： B01D63/02
摘要： PURPOSE:To facilitate the fitting of an equipment to a piping line and exchange of a hollow yarn cartridge by providing the hollow yarn cartridge wherein both ends are bundled and fixed and it is supported with a supporting means, a casing, and a cover body provided with both an inlet of liquid to be treated and an outlet of permeating liquid. CONSTITUTION:Many hollow yarn 3' in which the upper ends are opened and the lower ends are closed and both ends are bundled and fixed are incorporated into a supporting means of the hollow yarn e.g. into a self-standing network casing 6 and a cone-shaped cap body 4 having a small-diameter projecting part 9 is connected with the bundled and fixed part 5 of the upper part and fixed. On the other hand, the aperture end of a casing 1 incorporated with a hollow yarn cartridge 3 is fitted to a cover body 2 which is provided with a first aperture communicated with an outlet 13 of permeating liquid in the center of its bottom wall and with a second aperture communicating with an inlet 14 of liquid to be treated. At a time of exchanging the cartridge, the casing 1 is separated by taking out a hand coupling 17 from the cover body 2 and the cartridge 3 is drawn out from the casing 1. Thereafter after inserting the new hollow yarn cartridge into the first aperture of the cover body 2, the casing 1 is fitted to the cover body 2.

10. 发明专利

JPS6329563B2 失效
公开(公告)号：JPS6329563B2
公开(公告)日：1988-06-14
申请号：JP17248679
申请日：1979-12-28
申请人： KURARAY CO
发明人： KUSUDO OSAMU , OKAMOTO TAKEHIKO , OOMORI AKIO , HAMAMOTO YOSHITO , TANII HIROKUNI
IPC分类号： B01D63/02 , B01J4/00

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