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    SCREEN GAUZE AND PRODUCTION THEREOF
    31.
    发明专利
    SCREEN GAUZE AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH0280640A

    公开(公告)日：1990-03-20

    申请号：JP23312388

    申请日：1988-09-17

    Applicant: TORAY INDUSTRIES

    Inventor： UMEZAWA MASAO ,  KODERA YASUICHI ,  YAMAMOTO MASAHARU

    IPC: D01F6/62 ,  B41N1/24 ,  D01F6/84 ,  D01F8/14 ,  D02J13/00 ,  D03D9/00 ,  D03D15/00

    Abstract: PURPOSE:To obtain a screen gauze having high density, durability and dimensional stability by forming the screen with a specific filament made of a thermoplastic liquid crystalline resin. CONSTITUTION:A screen is produced with a filament of a thermoplastic resin capable of forming a liquid crystal. The filament is made to have a tenacity of >=6g/d and an elastic modulus of >=200g/d. The thermoplastic liquid crystal polymer is e.g., liquid crystalline polyester or liquid crystalline polyester amide and the number-average molecular weight of the resin of the filament constituting the screen gauze is preferably >=20,000.

    COMPOSITE FIBER AND PRODUCTION THEREOF
    33.
    发明专利
    COMPOSITE FIBER AND PRODUCTION THEREOF 失效

    公开(公告)号：JPH01239113A

    公开(公告)日：1989-09-25

    申请号：JP6502688

    申请日：1988-03-17

    Applicant: TORAY INDUSTRIES

    Inventor： FUKADA KUNITADA ,  UMEZAWA MASAO ,  KODERA YASUICHI ,  SUZUKI AKIRA ,  TAKAHASHI HIROSHI ,  YAMAMOTO MASAHARU

    IPC: D01F6/76 ,  D01F6/62 ,  D01F8/14 ,  D01F8/16

    Abstract: PURPOSE:To easily obtain a high-tenacity dyeable composite fiber, by spinning a specific modified polyester together with another polymer and subjecting the spun fiber to drawing and high-speed yarn-making process in a state attached with a specific amount of water or in water or steam. CONSTITUTION:A modified polyester produced by copolymerizing 1-20mol% (based on the acid component other than organic sulfonic acid compound consti tuting the modified polyester) of a carboxylic acid containing organic sulfonic acid group is spun together with another polymer preferably a liquid-crystalline polyester, etc., through a spinneret, etc. The spun yarn is subjected to drawing and high-speed yarn-making process in a state attached with >=7wt.% of water or in water or steam to obtain the objective composite fiber having a number- average molecular weight of >=14,000.

    RESPONSIVE ELEMENT AND ITS PRODUCTION
    34.
    发明专利
    RESPONSIVE ELEMENT AND ITS PRODUCTION 失效

    公开(公告)号：JPH01138411A

    公开(公告)日：1989-05-31

    申请号：JP29724587

    申请日：1987-11-24

    Applicant: TORAY INDUSTRIES

    Inventor： KAWAI TAKASHI ,  YAMAMOTO MASAHARU ,  OKAMOTO KAZUYOSHI

    IPC: A61B5/00 ,  D01F6/18 ,  D01F8/08 ,  D01F8/10 ,  D06M11/00 ,  D06M11/05 ,  D06M11/38 ,  D06M11/56 ,  D06M101/00 ,  D06M101/16 ,  D06M101/30 ,  G01D5/14 ,  G01D5/26 ,  G01N19/00 ,  G01R29/08 ,  G01R33/02 ,  H01L41/18 ,  H01L41/193

    Abstract: PURPOSE:To obtain an element which can be increases in packing density and strength and has a high response speed by constituting the element of an extremely fine fiber of an extendable and contractable polymer gel. CONSTITUTION:The fiber is obtd. by subjecting the precursor of the extendable and contractable polymer gel (the uncrosslinked polymer, oligomer or monomer of the extendable and contractable polymer gel or the mixture composed thereof, etc.) and a fiber formable polymer of a polyacrylonitrile system, etc., to composite spinning (core-sheath fiber spinning and sea-island fiber spinning executed by a wet process, dry process, etc.). The fiber may be subjected to post treatments such as stretching and heat treatment. The precursor is imparted with reaction (crosslinking reaction and cyclization, etc.) and thereafter, the fiber formable polymer is removed (a dissolving method, decomposing method, etc., which are executed by using liquid, gas, etc., can be adopted and are executed by a batch method or continuous method) in the case of using the monomer oligomer as the precursor of the polymer gel and if the form cannot be maintained with the monomer or oligomer alone. The diameter of the fiber of the polyacrylonitrile system, etc., obtd. in such a manner is reducible to

    PRODUCTION OF CONJUGATE FIBER HAVING WATER-SOLUBLE COMPONENT
    36.
    发明专利
    PRODUCTION OF CONJUGATE FIBER HAVING WATER-SOLUBLE COMPONENT 失效

    公开(公告)号：JPS63159525A

    公开(公告)日：1988-07-02

    申请号：JP30633486

    申请日：1986-12-24

    Applicant: TORAY INDUSTRIES

    Inventor： KUBOTA KOICHI ,  YAMAMOTO MASAHARU

    IPC: D01F6/84 ,  D01F6/86 ,  D01F8/14 ,  D06M11/00 ,  D06M11/05 ,  D06M11/38 ,  D06M101/00 ,  D06M101/16 ,  D06M101/30 ,  D06M101/32

    Abstract: PURPOSE:To obtain the titled fibers, capable of removing water-soluble components with hot water and useful as ultrafine fibers, etc., by melt spinning a copolymer containing terephthalic acid as a principal component and 5-sodium sulfoisophthalate, polyalkylene glycol, etc., as one component, drawing the resultant fibers and heat- treating the drawn fibers. CONSTITUTION:A copolyester containing terephthalic acid as a principal acid compo nent and 5-sodium sulfoisophthalate in an amount of 5-15mol% based on the total acid component, isophthalic acid and/or 3-20C aliphatic dicarboxylic acid in an am ount of 5-50mol% based on the total acid component and a polyacid anhydride from a 3-20C aliphatic dicarboxylic acid and/or polyalkylene glycol (derivative) having 400-6,000 average molecular weight and/or polyalkylene glycol (derivative) having 400-6,000 average molecular weight in an amount of 0-20wt.% based on the total polymer as copolymerization components is used as one component and subjected to melt conjugate spinning to provide fibers, which are drawn and heat-treated at a temperature of >=20 deg.C lower than the softening temperature [(Ts) deg.C] of the copoly mer without causing mutual melt sticking of the conjugate fibers to afford the aimed conjugate fibers.

    POLYCAPRAMIDE FIBER AND PRODUCTION THEREOF
    40.
    发明专利
    POLYCAPRAMIDE FIBER AND PRODUCTION THEREOF 失效

    公开(公告)号：JPS62133116A

    公开(公告)日：1987-06-16

    申请号：JP27337385

    申请日：1985-12-06

    Applicant: TORAY INDUSTRIES

    Inventor： SATO TAKUJI ,  YAMAMOTO MASAHARU ,  SAITO ISOO ,  FUJIOKA KOTARO

    IPC: C08L77/02 ,  C08K5/09 ,  C08L77/00 ,  D01F1/10 ,  D01F6/60 ,  D01F6/90

    Abstract: PURPOSE:To produce the titled fiber having specific relative viscosity in sulfuric acid, etc., and high tenacity retension and uniformity, in high efficiency, by carrying out melt-spinning, lubrication, taking off and drawing of a specific polycapramide polymer containing an oxidizing agent such as a copper salt under specific respective conditions. CONSTITUTION:A polycapramide polymer containing >=95mol% epsilon-capramide unit, having high polymerization degree represented by a relative viscosity of >=3.0 in sulfuric acid and containing one or more kinds of copper salts and/or oxidizing agents other than copper salt is spun by melt-spinning and the obtained yarn is passed through a zone positioned >=10cm below a spinneret and heated at a temperature higher than the melting point of the polycapramide by 30 deg.C. The quenched yarn is coated with a non-aqueous lubricant under a condition of formula I (T is spinning tension; (n) is the number of fiber filaments; V is speed of take-up roll and (d) is fineness of single filament), taken off at a speed of >=2,000m/min and subjected to a multi-stage hot-drawing under a condition of formula II (etar1 is relative viscosity of yarn on the take-up roll in sulfuric acid; etar2 is that of the yarn after the final winding). The objective fiber having the characteristics of formula III-VI (Tm is melting point; fc is crystal orientation degree; F is orientation of amorphous region; gammais mixing ratio of gamma-type crystal) can be produced by this process. USE:Tire cord, etc.

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