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    POLYMER-CLAD OPTICAL FIBER AND CLAD MATERIAL
    5.
    发明专利
    POLYMER-CLAD OPTICAL FIBER AND CLAD MATERIAL 失效

    公开(公告)号：JPS6424203A

    公开(公告)日：1989-01-26

    申请号：JP18171787

    申请日：1987-07-20

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： OKUDA YASUHIRO ,  YASUDA NORIHIKO ,  NISHIMOTO HIROAKI ,  SUGAI MASAKATSU ,  CHOKAI YASUO

    IPC: G02B6/00

    Abstract: PURPOSE:To obtain polymer-clad optical fiber having high strength and generating low loss by forming a clad part of a resin prepd. by setting an ultraviolet setting resin compsn. with ultraviolet rays. CONSTITUTION:A compd. having an ultraviolet ray functional group and an Si atom. bonded to at least one alkoxy group and halogen in a molecule, as expressed by formula I, is added to a clad-forming resin compsn. as a compd. capable of forming a chemical bond between core glass and a polymer in the stage of setting the compsn. with ultraviolet rays. In formula I, Z is a functional group capable of forming a chemical bond with an ultraviolet ray setting resin by the irradiation with ultraviolet rays; at least one among X1-X3 is an alkoxy group or halogen atom., and others are alkyl group or fluoroalkyl group; R is a single bond or a divalent org. group connecting Z to Si. By this constitution, a degree of increase of loss due to attachment of a caulked connector is reduced remarkably, increasing moreover drawing resistance, providing thus polymer clad optical fiber having high strength and generating low loss.

    CORROSIONPROOF TAPE
    7.
    发明专利
    CORROSIONPROOF TAPE 失效

    公开(公告)号：JPS61162576A

    公开(公告)日：1986-07-23

    申请号：JP376885

    申请日：1985-01-11

    Applicant: SUMITOMO ELECTRIC INDUSTRIES ,  JAPAN NATIONAL RAILWAY ,  YAGI SHUNJI

    Inventor： CHOKAI YASUO ,  YAMANO KATSUJI ,  YAGI SHUNJI

    IPC: C09J7/02 ,  F16L58/16

    Abstract: PURPOSE:To obtain the titled tape of high termite exterminating effect with little vaporization and/or decomposition of termite expellant even in calendering operation, useful as joining material for electric wires, by incorporating, as an active ingredient, specific bis-ether in tape material. CONSTITUTION:The objective tape can be obtained by incorporating (A) a rubber or plastic as a tape material with (B) as an active ingredient, a bis (2,3,3,3-tetrachloropropyl)ether of formula.

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