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21. 发明专利

JPH03193125A HEAT-RESISTANT POROUS MEMBRANE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03193125A
公开(公告)日：1991-08-22
申请号：JP33183089
申请日：1989-12-21
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , MATSUMOTO SHIRUYOSHI
IPC分类号： B01D71/26
摘要： PURPOSE:To obtain a porous membrane withstanding use or heat treatment at high temp. by holding a crosslinked polymer of divinylbenzene or divinylbenzen and ethylvinylbenzene to the surface of polyethylene or polypropylene porous membrane. CONSTITUTION:A crosslinked polymer of divinylbenzene or divinylbenzene and ethylvinylbenzene is held to the surface of a polyethylene or polypropylene porous membrane. This crosslinked polymer has heat resistance and a hydrolysis-resistant characteristic in hot water. Therefore, a porous membrane capable of withstanding use and heat treatment at high temp. is obtained while the polyethylene or polypropylene porous membrane is put to practical use.

22. 发明专利

JPH03130411A ULTRAFINE FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPH03130411A
公开(公告)日：1991-06-04
申请号：JP26839889
申请日：1989-10-16
申请人： MITSUBISHI RAYON CO
发明人： FUKUI YUICHI , AOKI KUNIHIRO , ITO HAJIME
IPC分类号： D06M11/00 , D01F6/18 , D01F6/38 , D06M13/127 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/24 , D06M101/28
摘要： PURPOSE:To obtain the objective ultrafine fiber suitable for artificial leather, etc., by mixing a polymer solution containing a specific amount of acrylonitrile with a polymer solution containing a specific amount of methyl methacrylate, spinning and drawing the mixed solution and removing the methyl methacrylate polymer from the fiber. CONSTITUTION:The objective ultrafine fiber composed of a polymer containing >=85% of acrylonitrile and having a diameter of =1,000 can be produced by mixing (A) 1 pt.wt. of a solution having a viscosity of 100-2,000 poise at 50 deg.C and produced by dissolving a polymer containing >=85% of acrylonitrile in a solvent (e.g. dimethylformamide) and (B) 1-100 pts.wt. of a solution having a viscosity of 100-2,000 poise at 50 deg.C and produced by dissolving a polymer containing >=90% of methyl methacrylate in a solvent (e.g. acetone), spinning and drawing the obtained mixed solution containing the component A dispersed in the component B in the form of fine particles having a diameter of 1-100mu and dissolving and removing the methyl methacrylate polymer from the obtained drawn fiber.

23. 发明专利

JPH03106915A CURABLE COMPOSITION 失效
公开(公告)号：JPH03106915A
公开(公告)日：1991-05-07
申请号：JP24228289
申请日：1989-09-20
申请人： MITSUBISHI RAYON CO
发明人： ONISHI HIROAKI , MATSUMOTO SHIRUYOSHI , AOKI KUNIHIRO
IPC分类号： C08F299/00 , C08F290/00 , C08G18/22 , C08G18/32 , C08G18/67
摘要： PURPOSE:To obtain a curable composition having good quality and excellent compatibility with another component such as a crosslinking agent by mixing a polymerizable fluorine compound containing a diisocyanate residue, a diol residue and a polymerizable unsaturated bond with a curing agent. CONSTITUTION:A curable composition comprising a fluorine compound having a structural unit of formula I (wherein R is an alkylene) and a structural unit of formula II (wherein Rf is a fluoroalkylene) and a polymerizable unsaturated bond and a curing agent. Examples of the diisocyanate residue of the structural unit of formula I include tolylene diisocyanate and tetramethylxylene diisocyanate. Examples of the diol residue of the structural unit of formula II include 4,4,4-trifluorobutane-1,2-diol and 2,2,3,3,-tetrafluorobutane-1,4-diol. To introduce the polymerizable unsaturated bond, 2-hydroxyethyl acrylate, 2-hydroxypropyl methacrylate or the like is used.

24. 发明专利

JPH03101891A METHOD FOR CLEANING CONDENSATE 失效
公开(公告)号：JPH03101891A
公开(公告)日：1991-04-26
申请号：JP23875689
申请日：1989-09-14
申请人： MITSUBISHI RAYON CO
发明人： YOSHIDA HARUHIKO , AOKI KUNIHIRO , YONEYAMA HIROAKI
IPC分类号： C02F1/44 , C02F1/42
摘要： PURPOSE:To prevent the deposition of clads on equipment and apparatus existing downstream by passing the condensate of steam generated in a boiling water reactor to a desalting column and a 1st stage feed water heater, then cleaning the same by a porous hollow yarn membrane of a carbon fiber system. CONSTITUTION:The condensate of the steam generated in the boiling water reactor is passed through the desalting column 6 and the 1st stage feed water heater 8 and is then cleaned by the porous hollow yarn membrane of the carbon fiber system. The clads generated in the stage before the 1st stage feed water heating column are efficiently removed in such a manner and the problems, such as the oscillation of the vanes of a boiler feed water pump existing on the downstream thereof by the deposition of the clads thereon, the clogging of a feed water flow regulating plate by the deposition of the clads therein, the sticking of the clads to the fuel rods of the reactor, are thereby minimized.

25. 发明专利

JPH0369673A HEAT-RESISTANT HYDROPHILIC POROUS POLYOLEFIN HOLLOW FIBER 失效
公开(公告)号：JPH0369673A
公开(公告)日：1991-03-26
申请号：JP20448089
申请日：1989-08-07
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , MITANI KAZUTAMI , MATSUMOTO SHIRUYOSHI
IPC分类号： B01D71/26 , B01D71/40 , C08J9/36 , C08L23/00 , D01F6/04 , D06M15/27 , D06M101/00 , D06M101/16 , D06M101/18
摘要： PURPOSE:To provide the subject hollow fiber having excellent heat resistance and hydrophilicity by adhering a specific polymer coating film to the surface of a porous polyethylene hollow fiber wherein fine pores formed among many fibrils are communicated through the inner and outer walls of the hollow fiber. CONSTITUTION:A porous polyolefin hollow fiber wherein fine pores formed among many fibrils arranged in the longitudinal direction of the polyolefin hollow fiber are communicated through the inner and outer walls of the hollow fiber are immersed in a treating solution containing 95-5wt.% of a compound of the formula (n is 10-100; R' is H or CH3) and 5-95wt.% of a monomer having at least two double bonds copolymerizable with the compound of the formula to adhere the coating film of the polymer of the monomers to the surface of the hollow fiber, thereby providing a porous polyolefin hollow fiber having excellent heat resistance and hydrophilicity.

26. 发明专利

JPH0352610A FILTER MEDIUM FOR AIR FILTER 失效
公开(公告)号：JPH0352610A
公开(公告)日：1991-03-06
申请号：JP18609789
申请日：1989-07-20
申请人： MITSUBISHI PAPER MILLS LTD , MITSUBISHI RAYON CO
发明人： YAMAZAKI TAKASHI , AOKI KUNIHIRO , TAKAHASHI HIROSHI
IPC分类号： B01D39/14 , B01D39/16
摘要： PURPOSE:To enhance the hydrofluoric acid resistance, etc., of the filter medium for air filters by laminating a filter layer consisting of only the org. fibers on the void layer side of a porous film of an org. polymer consisting of fine pores opened perpendicularly to the film plane and the void layer. CONSTITUTION:The filter layer consisting of only the org. fibers is laminated on the void layer side of the porous film consisting of the fine-pore layer having the pores which have 0.2 to 10mum average pore size and 35 to 95% opening rate and are opened substantially perpendicularly to the plane of the film and the void layer having the pore size large than the pore size of the fine-pore layer, by which the filter medium for air filters is formed. The filter layer is adequately the filter layer in which a part or the whole of the fibers consists of the fibers fibrillated to

27. 发明专利

JPH0243911A GAS FILTER 失效
公开(公告)号：JPH0243911A
公开(公告)日：1990-02-14
申请号：JP19297588
申请日：1988-08-02
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , TAKAHASHI HIROSHI , TAKEHATA KOJI
IPC分类号： B01D69/02 , B01D39/16 , C08J9/28
摘要： PURPOSE:To enhance particle removal performance by forming a gas filter of a porous membrane of the polymer having the pores vertical to the membrane surface and the average hole diameter thereof, wherein the ratio of major to minor diameter, being within a specified range. CONSTITUTION:A gas filter is formed of a porous membrane of the polymer capable of being formed into a film which has pores substantially vertical to at least one side of the membrane surface. The aforesaid pore having an average hole diameter of 0.5-10mum, the ratio of major to minor diameter being 1.0-2.0 and a coefficient of hole diameter variation being 0-50% is present at an opening rate of 35-75%, the hole rate of the porous membrane being 50-90% as a whole. As the polymer capable of being formed into the aforesaid film, poly vinylidene fluoride or polytetrafluoroethylene copolymer is used in this example. The gas filter thus formed is small in pressure loss yet excellent in the particle removal performance.

28. 发明专利

JPS63291904A METHACRYLIC ACID ESTER POLYMER 失效
公开(公告)号：JPS63291904A
公开(公告)日：1988-11-29
申请号：JP12861387
申请日：1987-05-26
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , IWASAKI TADASHI , KAMIMURA SHIGEO , MINAMI SHUNSUKE
IPC分类号： B01D53/14 , B01J20/26 , C08F8/32 , C08F8/42 , C08F20/34 , C08F20/36 , C09K3/00
摘要： PURPOSE:To obtain a polymer consisting essentially of a specific structural unit, having little fear of deterioration and change of quality caused by existence of water and possession of functional group and no fear of substantial crosslinking and a polymer, a complex of the polymer and a metallic ion. CONSTITUTION:A methacrylic acid ester polymer consisting essentially of a structural unit shown by formula I (R is H or methyl; n is 2 or 3) and a methacrylic acid ester polymer shown by formula II (M is Fe, Co, Cu, Ni, Mn, Cr or Zn), a complex of the polymer and a metallic ion. The polymer shown by formula I, for example, is produced by reacting an epoxy group-containing methacrylic acid ester shown by formula III with Schiff base compound which is obtained by condensing through an amine shown by formula IV with salicylaldehyde and polymerizing the reaction product. The compound shown by formula I is useful as a metallic scavenger and the polymer shown by formula II as an oxygen absorbent.

29. 发明专利

JPS63221824A TREATMENT METHOD OF GAS SEPARATION MEMBRANE 失效
公开(公告)号：JPS63221824A
公开(公告)日：1988-09-14
申请号：JP5338387
申请日：1987-03-09
申请人： MITSUBISHI RAYON CO
发明人： AOKI KUNIHIRO , MINAMI SHUNSUKE
IPC分类号： B01D53/22
摘要： PURPOSE:To increase gas separation function through selective closing of pinholes by performing ultrafiltration of nonporous separation members having pinholes with pore diameter of 500Angstrom or less, using a liquid containing colloidal particles. CONSTITUTION:A solution containing colloidal particles is prepared by dispersing protein colloidal particles and inorganic colloids in an organic solvent or water. Non-porous membranes of silicone, polyolefin or polyamide having pinholes with pore diameter of 500Angstrom or less are imparted with capacity capable of performing as high gas separation as membranes without pin holes, maintaining the intrinsic permeability of membrane. This capability is obtained closing the pinholes selectively through ultrafiltration using a solution containing the afore-mentioned colloidal particles. The preferable concentration of particles in the colloidal solution is 0.5wt.% or less. Further, the preferable ultrafiltration pressure is 10kg/cm or less.

30. 发明专利

JPS63196601A METHOD OF DEHYDRATING AND CONCENTRATING AQUEOUS CARRAGEENAN SOLUTION 失效
公开(公告)号：JPS63196601A
公开(公告)日：1988-08-15
申请号：JP2776387
申请日：1987-02-09
申请人： MITSUBISHI RAYON CO
发明人： HOSOKAWA HIROSHI , AOKI KUNIHIRO , MINAMI SHUNSUKE
IPC分类号： C08B37/00 , C08B37/12
摘要： PURPOSE:To dehydrate and concentrate an aqueous carrageenan solution without deteriorating it with superior power consumption efficiency, by providing two cation exchange membranes between an anode and a cathode and further a hydrophilic porous membrane between these cation exchange membranes, introducing successively from the anode side an alkaline electrolyte solution, an aqueous carragenan solution, etc., and applying a voltage between the electrodes. CONSTITUTION:Two alkali-resistant and heat-resistant cation exchange membranes (e.g. perfluorocarbonsulfonic acid membranes) having a cation transference number of 0.95 or more, and an electroendosmosis constant of 20mol. H2O/F or less are provided between an anode and a cathode in an electroendosmosis apparatus or the like, and a hydrophilic microporous membrane having an average pore diameter of 50Angstrom -5mu through which carrageenan cannot permeate but water and ions can permeate is provided between the two membranes. An alkaline electrolyte solution is introduced at least into the anode side, and an aqueous carrageenan solution having a concentration of 0.01-10wt.% is introduced in between the cation exchange membrane on the anode side and the hydrophilic microporous membrane. Then, a voltage is applied between the electrodes so that the DC voltage applied to the aqueous carrageenan solution may be 1-1,000V, and water is removed from between the microporous membrane and the cation exchange membrane on the cathode side to dehydrate and concentrate the aqueous carrageenan solution.

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