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    METHOD FOR TREATING POLYSULFONE RESIN SEMIPERMEABLE MEMBRANE
    97.
    发明专利
    METHOD FOR TREATING POLYSULFONE RESIN SEMIPERMEABLE MEMBRANE 失效

    公开(公告)号：JPH06339620A

    公开(公告)日：1994-12-13

    申请号：JP29807593

    申请日：1993-11-29

    Applicant: TORAY INDUSTRIES

    Inventor： SHIMAGAKI MASAAKI ,  TANAKA KAZUSANE ,  SHIMAMURA SEIJI

    IPC: B01D71/68 ,  C08J7/00

    Abstract: PURPOSE:To obtain a semi-permeable membrane with no eluation of blended polymers and high water permeability by applying radiation treatment on a polysulfone resin semi-permeable membrane and thereby corsslinking a hydrophilic polymer. CONSTITUTION:Radiation treatment is applied on a polysulfone resin semi-permeable membrane prepd. by using a system wherein an additive being a non-solvent or a swelling agent to the polysulfone resin is added into a soln, prepd. by mixing and dissolving a polysulfone resin and a hydrophilic polymer, as a film- forming stock soln. to crosslink the hydrophilic polymer. The polysulfone resin ordinally consists of a repeating unit of formula I or II but it may contain a functional group or it may be an alkyl type. As the hydrophilic polymer, polyvinyl pyrrolidone is the best and modified polyvinyl pyrrolidone, polyethylene glycol etc., can be cited. As the solvent, dimethylacetamide, dimethyl sulfoxide, dimethylformamide, N-methyl-2-pyrrolidone are especially pref. As the additive, water is most pref. from the view point of production cost.

    PRODUCTION OF SOLUTION FOR COATING
    99.
    发明专利
    PRODUCTION OF SOLUTION FOR COATING 失效

    公开(公告)号：JPH02294374A

    公开(公告)日：1990-12-05

    申请号：JP11660589

    申请日：1989-05-09

    Applicant: TORAY INDUSTRIES

    Inventor： MATSUMURA TERUICHIRO ,  YOSHIOKA TOSHIO ,  SHIMAMURA SEIJI

    IPC: C09D1/00 ,  C08G77/02 ,  C08G77/04 ,  C09D183/00 ,  C09D183/02

    Abstract: PURPOSE:To readily obtain the subject hydroxysilane-containing solution for coating by reacting an alkoxysilane, etc., in a short time using an ion-exchange fiber prepared by dispersing an island component consisting of a multi-core type conjugated fiber into a sea component consisting of an ion-exchange group- containing polymer and crosslinking the sea component for insolubilization thereof as a catalyst. CONSTITUTION:An objective solution for coating is obtained by using (A) 100 pts.wt. alkoxysilane (tetramethoxysilane, etc.), (B) 50-200 pts.wt. water and (C) a catalyst consisting of an ion-exchange fiber prepared by dispersing (ii) plural island component filaments consisting of a fiber forming polymer (polyethylene, etc.) in an amount of 20-80wt.% into (i) 20-80wt.% sea component composed of an ion-exchange group-containing polymer (e.g. prepared by sulfonating polystyrene using trimethylamine, reacting sodium monochloroacetate with the resultant product to react a weak acid type, etc., including carboxylic acids) and consisting of a core type conjugated fiber composed of the above mentioned continuous island component in the longitudinal direction and the sea component in which the polymer constituting the sea component is crosslinked and insolubilized.

    DEODORIZING MATERIAL
    100.
    发明专利
    DEODORIZING MATERIAL 失效

    公开(公告)号：JPS6425867A

    公开(公告)日：1989-01-27

    申请号：JP18281687

    申请日：1987-07-21

    Applicant: TORAY INDUSTRIES

    Inventor： SHIMAMURA SEIJI ,  YOSHIKAWA SEIICHI ,  SEKI MASAO ,  HAYASHI KAZUYA

    IPC: A61L9/00

    Abstract: PURPOSE:To impart high deodorizing capacity to a synthetic polymer molded product excellent in mechanical properties as uniform as possible, by applying low temp. plasma treatment to the polymer molded product and impregnating the treated product with a chemical agent containing an oxycaboxylic acid compound having two or more carboxyl groups in the molecule thereof and a ferrous salt. CONSTITUTION:Low temp. plasma treatment is applied to a polymer molded product. That is, the molded product is exposed to low temp. plasma generated by applying photo-voltage in a vacuum container filled with specific gas. A deodorizing material to be infiltrated in this polymer molded product is prepared by compounding an oxycarboxylic acid compound having two or more carboxyl groups in the molecule thereof with a ferrous salt. This ferrous ion shows marked stability against oxygen in air and has light fastness and heat resistance, and the active state of the ferrous ion is kept for a long period of time. By this method, the impregnation property of the chemical agent increases and the adhesion of the chemical agent being the deodorizing material is made uniform even with respect to the polymer molded product having high hydrophylicity and deodorizing efficiency can be enhanced.

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