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21. 发明专利

JPH0369607A HOLLOW FIBER MEMBRANE SPINNING UNIT WITH SPINNERET ANGLE-REGULATIVE DEVICE 失效
公开(公告)号：JPH0369607A
公开(公告)日：1991-03-26
申请号：JP20458989
申请日：1989-08-09
申请人： DAICEL CHEM
发明人： NAKAMURA HIROYUKI
IPC分类号： B01D67/00 , B01D69/08 , D01D5/24 , D01F6/00
摘要： PURPOSE:To provide the title unit enabling the surface of a spinneret to be easily cleaned off in troubles due to e.g. stains on said spinneret, so designed as to provide a means for regulating the angle of the surface of a tube-in-orifice type spinneret against the level of a coagulating solution. CONSTITUTION:A means for regulating the angle of the level of a coagulating solution 10 against the surface of a tube in-orifice type spinneret 3 to deliver a spinning dope into a coagulating bath 9 is provided; when a hollow fiber membrane 8 is to be produced, the spinneret 3 is made to be parallel to the surface of the coagulating solution 10, and when the surface of the spinneret is to be cleaned, said surface is tilted to ensure a worker to directly, easily observe said surface, and after completion of the cleaning, said surface is returned to the position parallel to the coagulating solution 10, thus proceeding with spinning operation. When the spinneret surface is to be cleaned, the angle of said surface against the coagulating solution is pref. 30-45 deg.. The regulative means is made up by e.g. a supporting shaft 2, a bearing 4 and a fixing screw 5.

22. 发明专利

JPH02160025A PRODUCTION OF HOLLOW FIBER MEMBRANE 失效
公开(公告)号：JPH02160025A
公开(公告)日：1990-06-20
申请号：JP31353788
申请日：1988-12-12
申请人： DAICEL CHEM
发明人： NAKAMURA HIROYUKI , AZUMA TATSUO
IPC分类号： B01D67/00 , B01D69/08 , D01D5/06
摘要： PURPOSE:To produce a bundle of regularly arranged hollow fiber membranes having fine appearance even in a somewhat complexed line by fixing hollow fiber membranes travelling parallel to each other on a plane at regular intervals. CONSTITUTION:When plural selectively permeable hollow fiber membranes are produced by dry-wet spinning or wet spinning, hollow fiber membranes 15 travelling parallel to each other are fixed on a plane at regular intervals, e.g. with metal fittings 17. The fixed membranes are sent to a bundling machine through a washing stage and the fixed parts are cut as shown by dotted lines 18 at the time of bundling. A bundle 20 of regularly arranged hollow fiber membranes having fine appearance can be produced even in a somewhat complexed line.

23. 发明专利

JPH01180207A PRODUCTION OF POLYSULFONE HOLLOW YARN MEMBRANE 失效
公开(公告)号：JPH01180207A
公开(公告)日：1989-07-18
申请号：JP545588
申请日：1988-01-13
申请人： DAICEL CHEM
发明人： KOMADA HAJIME , NAKAMURA HIROYUKI , KOJIMA AKIO , ISHII KIYOSHI
IPC分类号： D01F6/76 , B01D69/08 , B01D71/68 , D01D5/24
摘要： PURPOSE:To obtain hollow yarn membrane having excellent water permeability by extrusion spinning of a spinning soln. consisting of polysulfone polymer, 2-pyrrolidone as solvent, and carbinol acetate and polyethylene glycol as non- solvent, into aq. soln. CONSTITUTION:The spinning stock soln. consisting of polysulfone polymer, 2-pyrrolidone as solvent (may be used with other solvent such as dioxane, dimethyl acetamide), and carbinol acetate (CH3COOCH2CH2OCH2CH2OCH2CH3) and polyethylene glycol as non-solvent, and having small weight of the non- solvent than the weight of the solvent is spun into an aq. soln. to produce the hollow yarn membrane. Thereby the hollow yarn membrane having excellent water permeability can be obtd. and besides, the spinning soln. is easily handled at the production.

24. 发明专利

JPH01176407A PRODUCTION OF HOLLOW YARN MEMBRANE MADE OF POLYSULFONE 失效
公开(公告)号：JPH01176407A
公开(公告)日：1989-07-12
申请号：JP33585287
申请日：1987-12-28
申请人： DAICEL CHEM
发明人： KOJIMA AKIO , NAKAMURA HIROYUKI , ISHII KIYOSHI , KOMADA HAJIME
IPC分类号： D01F6/76 , B01D69/08 , B01D71/68 , D01D5/24
摘要： PURPOSE:To improve the operability of spinning and to contrive enhancement of water permeability while maintaining fractionation performance by utilizing triethylene glycol dimethyl ether as the solvent of spinning raw liquid consisting of a polysulfone-base polymer, spinning and discharging the mixture into an aq. soln. CONSTITUTION:Triethylene glycol dimethyl ether (preferably 10wt.% or more and it may be mixed with the other solvent such as 2-pyrrolidone and used) is used as the solvent of spinning raw liquid consisting of a polysulfone-base polymer and the mixture is spun and discharged in an aq. soln. to produce a hollow yarn membrane. The membrane obtained thereby has fractionation performance of the same degree as the conventional membrane and is excellent in water permeability. Furthermore since triethylene glycol dimethyl ether has very excellent solubility for the polysulfone-base polymer, the viscosity of the spinning raw liquid is made low and both operability and productivity at a time for producing the hollow yarn membrane are made very excellent.

25. 发明专利

JPS6312850B2 失效
公开(公告)号：JPS6312850B2
公开(公告)日：1988-03-23
申请号：JP24566783
申请日：1983-12-28
申请人： DAICEL CHEM
发明人： OKAMOTO YOSHIO , HATADA KOICHI , SHIBATA TOORU , OKAMOTO ICHIRO , NAKAMURA HIROYUKI
IPC分类号： B01J20/281 , B01D15/08 , B01J20/22 , B01J20/24 , B01J20/291 , B01J20/32 , C07B31/00 , C07B57/00 , C07B63/00 , C07C17/00 , C07C17/395 , C07C23/12 , C07C45/00 , C07C45/78 , C07C45/79 , C07C49/657 , C07C49/665 , C07C49/83 , C07C49/92 , C07C67/00 , C07C201/00 , C07C201/16 , C07C205/57 , C07C231/00 , C07C233/58 , C07C315/06 , C07C317/44 , C07F13/00 , C08B3/10 , G01N30/88

26. 发明专利

JPS60212401A Preparation of cellulose ether having high degree of substitution 失效
标题翻译：具有高度取代度的纤维素醚的制备
公开(公告)号：JPS60212401A
公开(公告)日：1985-10-24
申请号：JP6890384
申请日：1984-04-06
申请人： Daicel Chem Ind Ltd
发明人： NAKAMURA HIROYUKI
IPC分类号： C08B11/04 , C08B11/187 , C08B13/00
CPC分类号： C08B11/04 , C08B11/187 , C08B13/00
摘要： PURPOSE: To prepare a cellulose ether having high degree of substitution useful as an optically resolving reagent, etc. by one stage reaction, by reacting a homogeous solution of a cellulose acetate in an organic solvent with a specific etherifying reagent in the presence of a base.
CONSTITUTION: A cellulose acetate (e.g., cellulose diacetate, etc.) having ≥2.0° of substitution, preferably 2.0W2.6° of substitution is dissolved in an organic solvent (e.g., 1,4-dioxane, THF, etc.), and reacted with an etherifying agent (e.g., benzyl chloride, 4,-chloromethylpyridine, etc.) shown by the formula RCH
2 X (R is aromatic group, heteroaromatic group, vinyl, acetyl, or their substituted group; X is Cl, or Br) in the presence of a base such as KOH, NaOH, etc., to give the desired ether having a high degree of substitution (preferably ≥2.5° of substitution).
COPYRIGHT: (C)1985,JPO&Japio
摘要翻译：目的：通过一步反应制备用作光学拆分试剂的高取代度的纤维素醚，通过使有机溶剂中的乙酸纤维素的均匀溶液与特定的醚化试剂在碱的存在下反应。构成：具有> = 2.0度的乙酸纤维素（例如纤维素二乙酸酯等）的取代，优选2.0-2.6度。的取代溶解在有机溶剂（例如1,4-二恶烷，THF等）中，并与式RCH 2 X（R 1）所示的醚化剂（例如苄基氯，4， - 氯甲基吡啶等）反应是芳基，杂芳基，乙烯基，乙酰基或它们的取代基; X是Cl或Br），在碱如KOH，NaOH等存在下，得到所需的具有高取代度的醚（优选> = 2.5度的取代）。

27. 发明专利

JP2000034301A CARBOXYMETHYL CELLULOSE OR ITS SALT 失效
公开(公告)号：JP2000034301A
公开(公告)日：2000-02-02
申请号：JP20538098
申请日：1998-07-21
申请人： DAICEL CHEM
发明人： ONO KATSUAKI , NAKAMURA HIROYUKI
IPC分类号： C08B15/04
摘要： PROBLEM TO BE SOLVED: To obtain a carboxymethyl cellulose or its salt (CMC) capable of coexisting fluidity, coating property and thixotropy in an aqueous composition. SOLUTION: The viscosity ratio η24/η1 of the viscosity η1 after 1 hour and the viscosity η24 after 24 hours after preparing an aqueous solution of sorbitol using this CMC is >=1.4. This CMC exhibits (1) the turbidity of 1 wt.% solution using 4 wt.% sodium chloride solution as the solvent is >=30%, (2) the viscosity of 1 wt.% aqueous solution is 20 to 1,000 (mPa.s), (3) the average degree of etherification is 0.6 to 1.0. This CMC is obtained by setting the reaction temperature at 20 to 50 deg.C in a process producing the alkaline cellulose by reacting cellulose and alkali.

28. 发明专利

JPH0425502A ULTRALOW-VISCOSITY CARBOXYMETHYLCELLULOSE SODIUM SALT 失效
公开(公告)号：JPH0425502A
公开(公告)日：1992-01-29
申请号：JP13047590
申请日：1990-05-21
申请人： DAICEL CHEM , NICHIRIN CHEMICAL IND
发明人： NAKAMURA HIROYUKI , MORITA TETSUO
IPC分类号： C08B11/12
摘要： PURPOSE:To obtain an ultralow-viscosity CMC-Na salt which, when formed into a highly concentrated aqueous solution, has a viscosity and rheological characteristics equivalent to those of gum arabic by converting a CMC-Na salt having a degree of carboxymethylation above a specified value into a lowly viscous one. CONSTITUTION:A carboxymethylcellulose sodium salt (hereinbelow abbreviated to CMC-Na salt) of a degree of carboxymethylation of 1 or above is converted into lowly viscous one, for example, by treating it with hydrogen peroxide, hydrogen halide or ozone. In this way, an ultralow-viscosity CMC-Na salt which has an apparent viscosity of a 30% aqueous solution of 500cP or above as measured with a Brookfield viscometer (at 25 deg.C and a rotation speed of the spindle of 60rpm) and a ratio of the viscosity at a spindle rotation speed of 60rpm to the viscosity at a spindle speed of 60rpm of 0.7 or above can be obtained. This salt can desirably be used as an emulsifier for foods, a protective colloid for inks, or the like.

29. 发明专利

JPH0372922A APPARATUS FOR ARRANGING HOLLOW YARN BUNDLE 失效
公开(公告)号：JPH0372922A
公开(公告)日：1991-03-28
申请号：JP20981389
申请日：1989-08-14
申请人： DAICEL CHEM
发明人： NAKAMURA HIROYUKI
IPC分类号： B01D63/02
摘要： PURPOSE:To obtain an arranged hollow yarn bundle having no problem such as the damage of hollow yarn or the deficiency of the number of hollow yarns by a method wherein a permselective hollow yarn bundle is suspended while the upper end part thereof is held and a bundle arranging solution is supplied to the upper end part of the hollow yarn bundle from a bundle arranging solution tank. CONSTITUTION:A permselective hollow yarn bundle 1 is suspended while the upper end part thereof is held by a yarn bundle fixing part 2. The bundle arranging solution in a bundle arranging solution tank 4 is supplied to the upper end part of the hollow yarn bundle 1 fixed by the yarn bundle fixing part 2 from a bundle arranging solution emitting port 8 by a liquid supply pump 5. The hollow yarn bundle arranged by this apparatus becomes well in its appearance. This apparatus also solves a problem such as the damage of hollow yarn or the deficiency of the number of hollow yarns accompanied by conventional bundle arranging work.

30. 发明专利

JPH0245062A HOLLOW YARN MEMBRANE FOR BLOOD THICKENING DEVICE 失效
公开(公告)号：JPH0245062A
公开(公告)日：1990-02-15
申请号：JP19423288
申请日：1988-08-03
申请人： DAICEL CHEM
发明人： KOMADA HAJIME , NAKAMURA HIROYUKI
IPC分类号： C08G75/00 , A61M1/18 , A61M1/34 , C08G75/23
摘要： PURPOSE:To prevent the dissipation of effective components from blood by constituting the above membrane of a hollow polyether sulfone hollow yarn membrane which is of respectively specific values in the permeation rate of bovine serum albumin and permeation rate of pure water and has a specific bore or below. CONSTITUTION:The hollow yarn membrane used for the blood thickening device consists of the hollow polyether sulfone membrane which has the performance of 20-70% permeation rate of the bovine serum albumin and >=700l/m .hr.kg/ cm (25 deg.C) permeation rate of the pure water and

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