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    4.
    发明专利
    未知

    公开(公告)号：DE3125980A1

    公开(公告)日：1982-04-15

    申请号：DE3125980

    申请日：1981-07-01

    Applicant: TORAY INDUSTRIES

    Inventor： SONODA TAKESHI ,  TANAKA YOSHITAKA ,  TAKENAKA SHIGENORI ,  NOGI TATSUO

    IPC: C08L33/00 ,  B01D69/08 ,  B01D71/28 ,  B01D71/40 ,  B01D71/80 ,  B01D71/82 ,  C08L33/02 ,  C08L33/04 ,  C08L33/12 ,  C08L33/14 ,  B01D13/04 ,  B01D31/00 ,  A61M1/03 ,  C08L33/10 ,  C08J5/22

    Abstract: A membrane for microfiltration, ultrafiltration or dialysis comprises a methyl methacrylate copolymer containing about 0.5 to 10 mol % of a monomer having sulfonate groups, and a methyl methacrylate copolymer containing about 0.5 to 10 mol % of a monomer having quaternary nitrogen-containing groups. It is manufactured by mixing those copolymers, dissolving the mixture in a solvent such as dimethylsulfoxide or dimethylformamide, and forming a membrane from a solution of the copolymers by casting or spinning. The membrane is particularly suitable for use in the purification of blood, and its most preferable form is hollow fibers. A method of preparing hollow fibers comprises extruding the copolymer solution through a spinneret having an annular orifice defined by a thin central tube while a liquid or gas is being injected into the central tube, and coagulating the extrusion product.

    POLYMETHYL METHACRYLATE HOLLOW YARN ULTRA-FILTRATION MEMBRANE AND PROCESS FOR ITS PRODUCTION
    5.
    发明专利
    POLYMETHYL METHACRYLATE HOLLOW YARN ULTRA-FILTRATION MEMBRANE AND PROCESS FOR ITS PRODUCTION 未知

    公开(公告)号：DE3273047D1

    公开(公告)日：1986-10-09

    申请号：DE3273047

    申请日：1982-10-28

    Applicant: TORAY INDUSTRIES

    Inventor： NOGI TATSUO ,  IWAMI TOMONORI ,  TANAKA KAZUMI

    IPC: B01D69/08 ,  B01D71/40 ,  D01D5/24 ,  D01F6/16

    Abstract: PCT No. PCT/JP82/00422 Sec. 371 Date Jun. 30, 1983 Sec. 102(e) Date Jun. 30, 1983 PCT Filed Oct. 28, 1982 PCT Pub. No. WO83/01632 PCT Pub. Date May 11, 1983.The present invention relates to a hollow fiber type ultrafiltration membrane comprising a material of polymethyl methacrylate series in which no crosslinking is formed substantially and a process for its preparation. By employing adequate conditions, this material which is easy to handle makes it possible to achieve a steady manufacturing process and a constant quality of product. The obtained membrane is excellent in selective permeability and bio-compatibility, and expected to show its effect mainly in medical applications such as separation of plasma.

    FIRE-RETARDANT FIBER OF AMINOPLAST AND POLYVINYL ALCOHOL
    6.
    发明专利
    FIRE-RETARDANT FIBER OF AMINOPLAST AND POLYVINYL ALCOHOL 未知

    公开(公告)号：CA1050690A

    公开(公告)日：1979-03-13

    申请号：CA227363

    申请日：1975-05-20

    Applicant: TORAY INDUSTRIES

    Inventor： NOGI TATSUO ,  YOSHIZAWA YASUO ,  KASHIHARA KANZI ,  YOSHIZUMI NOBUO ,  TSUDA YOSHIZO

    IPC: D01F6/50 ,  C08L29/04 ,  C08L61/20 ,  D01F6/14 ,  D01F6/94

    Abstract: A flame-retardant fiber is made comprising 20-95% by weight of amino resin condensate of an amino compound and formaldehyde in which the amino compound may be a melamine, combined melamine and guanamine, combined melamine and urea, combined melamine, guanamine and urea, and benzoguanamine and/or urea, and in which the chemical bond linking the polymer chain is primarily a methylene linkage and 80-5% by weight of polyvinylalcohol, the resulting fiber being cured when necessary and having a tensile strength of at least 1.0 g/d, and having a break elongation of at least 5%. These flame retardant fibers find use in a wide variety of fabrics, either alone or admixed with other fibers. They are particularly useful in the production of flame protective clothing.

    7.
    发明专利
    未知

    公开(公告)号：DE1643537A1

    公开(公告)日：1971-07-08

    申请号：DET0034541

    申请日：1967-08-09

    Applicant: TORAY INDUSTRIES

    Inventor： YASUHARA YUTAKA ,  NOGI TATSUO ,  TAKAHASHI IKUZO

    IPC: C07C51/10 ,  C07C51/12 ,  C07C51/15

    Abstract: 1,155,776. Aromatic hydroxycarboxylic acids. TOYO RAYON K.K. 11 Aug., 1967 [16 Aug., 1966; 30 March, 1967 (2)], No. 37115/67. Heading C2C. Aromatic hydroxycarboxylic acids and their salts with Group IA or IIA metals are prepared by reacting (i) phenol unsubstituted in at least one of the 2-, 4- and 6-positions, (ii) 1-naphthol unsubstituted in at least one of the 2-, 4-, 5- and 7-positions or (iii) 2-naphthol unsubstituted in at least one of the 1-, 3-, 6- and 8-positions (in which (i), (ii) and (iii) may be used in the form of their Group IA or IIA metal salts, and are optionally halogen-, OH-, alkoxy-, alkyl-, amino-, aryl- or carboxyl-substituted) with a Group IA or IIA metal carbonate, aliphatic monocarboxylate and/or aliphatic dicarboxylate, and with CO, and if desired acidifying the salt produced to give the corresponding acid. In a modification, when a Group IA or IIA metal formate is used, the reaction is effected in absence of CO.

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