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    DEODORIZING MATERIAL
    4.
    发明专利
    DEODORIZING MATERIAL 失效

    公开(公告)号：JPS6429264A

    公开(公告)日：1989-01-31

    申请号：JP18631087

    申请日：1987-07-24

    Applicant: TORAY INDUSTRIES

    Inventor： SHIMAMURA SEIJI ,  YOSHIKAWA SEIICHI

    IPC: A61L9/00

    Abstract: PURPOSE:To uniformly impart high deodorizing capacity to a molded product excellent in mechanical properties, by impregnating a synthetic polymer molded product having predetermined water content with a chemical agent containing an oxycarboxylic acid compound and a ferrous salt. CONSTITUTION:A synthetic polymer molded product containing 1% or more of moisture in a standard state is impregnated with a chemical agent containing an oxycarboxylic acid compound having two or more carboxyl groups in the molecule thereof and a ferrous slat. The synthetic polymer molded product is formed using polyamide, polyvinyl alcohol, polyacrylonitrile or polyurethane. As the oxycarboxylic acid compound, tartaric acid, citric acid, malic acid or the like are used.

    LOW-TEMPERATURE SOLUBLE TYPE STOCK SOLUTION AND PRODUCTION THEREOF
    5.
    发明专利
    LOW-TEMPERATURE SOLUBLE TYPE STOCK SOLUTION AND PRODUCTION THEREOF 失效

    公开(公告)号：JPS6397666A

    公开(公告)日：1988-04-28

    申请号：JP24317386

    申请日：1986-10-15

    Applicant: TORAY INDUSTRIES

    Inventor： SHIMAGAKI MASAAKI ,  TANAKA KAZUSANE ,  SHIMAMURA SEIJI

    IPC: B05D7/24 ,  B01D67/00 ,  B01D71/68 ,  C08J5/18 ,  C08L39/00 ,  C08L39/06 ,  C08L81/00 ,  C08L81/06 ,  C08L101/00 ,  D01D1/02 ,  D01F6/54 ,  D01F6/56 ,  D01F6/94

    Abstract: PURPOSE:To produce a stock soln. which is of a low-temperature soluble type which causes phase separation on a high-temperature side, allows a temp. effect during solidification to be easily utilized and can be stably stored at low temp., by adding a specified additive to a soln. obtd. by mixing a hydrophobic high-molecular material with a hydrophilic high-molecular material. CONSTITUTION:An additive (A) which is a non-solvent for the component B and a wetting agent (e.g., water, 1,4-butanediol, etc.) is added to a soln. obtd. by mixing a hydrophobic high-molecular material (B) (e.g., polysulfone) as a principal ingredient with a hydrophilic high-molecular material (C) (e.g., polyvinylpyrrolidone) and mixing them (e.g., a dimethylacetamide soln.) to produce a low-temperature soluble type stock soln. which causes phase separation on a high-temperature side. The stock soln. can be easily stored at low temp. and advantageously used in the production of semipermeable membranes having large pores in particular. Further, the stock soln. contains the hydrophilic high-molecular material so that dry membranes can be easily prepd. If the hydrophilic high-molecular material is crosslinkable, it can be used in the fields of articles requiring resistance to water and dissolution, even when the crosslinkable material is water-soluble.

    PRODUCTION OF ULTRAPURE WATER
    7.
    发明专利
    PRODUCTION OF ULTRAPURE WATER 失效

    公开(公告)号：JPS6211593A

    公开(公告)日：1987-01-20

    申请号：JP14834085

    申请日：1985-07-08

    Applicant: TORAY INDUSTRIES

    Inventor： YOSHIOKA TOSHIO ,  KAWAI TAKASHI ,  SHIMAMURA SEIJI

    IPC: C02F1/44 ,  B01D69/08 ,  C02F1/42 ,  C02F9/00

    Abstract: PURPOSE:To further improve the quality of ultrapure water as compared with the present quality and to miniaturize the apparatus by treating raw water with a hollow yarn membrane having a specified ultrafiltration velocity before the water is treated with an ion exchanger. CONSTITUTION:An ion exchanger at least a part of which is composed of an ion-exchange fiber is used for producing ultrapure water. In this method, raw water is treated with a hollow yarn membrane having 5-2,000ml/hr.m .mmHg ultrafiltration velocity and whose inner diameter is regulated to 150-350mu (10-100mu film thickness) before the water is treated with an ion exchanger. Consequently, the quality of ultrapure water is further improved as compared with the present quality and the apparatus can be miniaturized.

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