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    PRODUCTION OF POLY-M-PHENYLENE TEREPHTHALAMIDE-BASED FIBER
    23.
    发明专利
    PRODUCTION OF POLY-M-PHENYLENE TEREPHTHALAMIDE-BASED FIBER 失效

    公开(公告)号：JPH0359110A

    公开(公告)日：1991-03-14

    申请号：JP19357389

    申请日：1989-07-26

    Applicant: TORAY INDUSTRIES

    Inventor： KANDA TAKUMA ,  NARUKI HIROKO

    IPC: D01F6/60

    Abstract: PURPOSE:To obtain the title fiber having mechanical characteristics, flame retardance, excellent high-temperature dimensional stability and dyeability by spinning a solution of wholly aromatic polyamide in a solvent having a specific concentration into an aqueous coagulating bath at a specific temperature and treating the fiber under tension. CONSTITUTION:In obtaining the objective fiber by spinning a solution of wholly aromatic polyamide having a repeating unit comprising >=85mol% m-phenylene terephthalamide unit into a coagulating bath having >=40wt.% calcium chloride and >=70 deg.C bath temperature, then washing the fiber with water, drawing in a wet state and drying, an aqueous solution of an amide-based solvent (e.g. at least one comprising N-methylpyrrolidone and N,N-dimethylacetamide) having >=80 deg.C bathing temperature and 20-60wt.% concentration is used as a wetting drawing bath or fiber once drawn in hot water is stretched in an aqueous solution of the amide-based solvent having >=80 deg.C bathing temperature and 20-60wt.% concentration.

    COPOLYIMIDE YARN
    24.
    发明专利
    COPOLYIMIDE YARN 失效

    公开(公告)号：JPH01314724A

    公开(公告)日：1989-12-19

    申请号：JP14008088

    申请日：1988-06-07

    Applicant: TORAY INDUSTRIES

    Inventor： KANDA TAKUMA

    IPC: C08G73/10 ,  D01F6/74 ,  D01F6/78

    Abstract: PURPOSE:To obtain the subject yarn suitable for electric insulating material, fire proofing wear, filter or interior material of vehicles, etc., having excellent continuity of heat resistance, nonflammability and dimensional stability at high temperature, containing diaminodiphenylether is diamine component and specific component of acid anhydride component. CONSTITUTION:The aimed fiber is composed of 4,4'-diaminodiphenylether as diamine component and acid anhydride component of (A) pyromellitic dianhydride and (B) 3,3', 4,4'-benzophenone tetracarboxylic dianhydride and/or 3,3', 4,4'-biphenyltetracarboxylic dianhydride and fraction of the component A in the acid anhydride is 85-35mol%. To obtain said fiber, at first above monomers are reacted to form polyamic acid solution, then spun to fiber by wet or dry spinning method and at last converted to polyimide by cyclization with heat or chemical means.

    AROMATIC POLYAMIDE COPOLYMER FIBER
    25.
    发明专利
    AROMATIC POLYAMIDE COPOLYMER FIBER 失效

    公开(公告)号：JPS63165515A

    公开(公告)日：1988-07-08

    申请号：JP31511186

    申请日：1986-12-25

    Applicant: TORAY INDUSTRIES

    Inventor： KIMURA HAJIME ,  KANDA TAKUMA

    IPC: C08G69/40 ,  C08G69/32 ,  C08G69/46 ,  D01F6/80 ,  D01F6/82

    Abstract: PURPOSE:To provide the titled fiber outstanding in both steaming and fatigue resistances, having both high strength and Young's modulus, useful for various industrial materials, consisting of an aromatic polyamide copolymer constituted of two kinds of structural units incorporated with respective specific diamines. CONSTITUTION:The objective fiber can be obtained by spinning, in a conventional manner, an aromatic polyamide copolymer constituted of (1) 80-20mol% of structural unit of formula I (X is methyl or Cl) and (2) 20-80mol% of another structural unit of formula II. Said aromatic polyamide copolymer can favorably be prepared by dissolving in an amide solvent, two diamine components: (A) 2, 2'-dimethylbenzidine and/or 2, 2'-dichlorobenzidine and (B) 1,4-bis(p-aminophenoxy)benzene in the molar ratio A/B=8/20-20/80 followed by adding (C) an equimolar amount, to said diamine components, of terephthaloyl chloride to carry out a polycondensation.

    COPOLYIMIDE YARN
    26.
    发明专利
    COPOLYIMIDE YARN 失效

    公开(公告)号：JPS6257916A

    公开(公告)日：1987-03-13

    申请号：JP19783185

    申请日：1985-09-09

    Applicant: TORAY INDUSTRIES

    Inventor： KIMURA HAJIME ,  KANDA TAKUMA

    IPC: D01F6/74 ,  C08G73/00 ,  C08G73/10

    Abstract: PURPOSE:To obtain the titled yarn useful as an electrical insulating material, filter, wear for preventing disasters, composite reinforcing material, tire cord, etc., having improved mechanical characteristics and heat resistance, having a specific structural formula. CONSTITUTION:The aimed yarn having a structure substantially shown by the formula I(R is p-phenylene in an amount of 5-50 mol% of the repeating unit and group shown by the formula II in an amount of the rest of the repeating unit).

    FULLY AROMATIC POLYETHER-ESTER
    28.
    发明专利
    FULLY AROMATIC POLYETHER-ESTER 失效

    公开(公告)号：JPS57102924A

    公开(公告)日：1982-06-26

    申请号：JP17715280

    申请日：1980-12-17

    Applicant: TORAY INDUSTRIES

    Inventor： KANDA TAKUMA ,  MATSUDA TOSHIKAZU

    IPC: C08G63/00 ,  C08G63/19 ,  C08G63/66

    Abstract: PURPOSE:A fully aromatic polyether-ester excellent in heat resistance, flame retardancy and mechanical and electrical properties, prepared by subjecting a specified phenyl acetate compound and a specified 4, 4'-oxydibenzoic acid to an acetic acid elimination polymerization. CONSTITUTION:A fully aromatic polyether-ester consisting of structural units represented by formulaI, wherein n is 3 or 4, can be produced by an acetic acid elimination polymerization process in which 4, 4'-oxydibenzoic acid and a compound of formula II, wherein n is 3 or 4, are used as monomers, or by a phenol elimination polymerization process in which a compound of formula III, wherein n is 3 or 4, and a diphenyl 4, 4'-oxydibenzoate ester are used as monomers. USE:This polyether-ester is useful, in the form of fiber, for filters, heat-resistant electrical insulating materials, fabrics, paper and useful, in the form of film, for uniaxially or biaxially stretched films, heat-resistant electrical insulating materials. In addition, it can be used, in the form of molding, as an engineering plastic.

    BLOCK POLYETHER URETHANE SELECTIVE PERMEABLE MEMBRANE AND ITS MANUFACTURE
    29.
    发明专利
    BLOCK POLYETHER URETHANE SELECTIVE PERMEABLE MEMBRANE AND ITS MANUFACTURE 失效

    公开(公告)号：JPS5637007A

    公开(公告)日：1981-04-10

    申请号：JP11330579

    申请日：1979-09-04

    Applicant: TORAY INDUSTRIES

    Inventor： KANDA TAKUMA ,  KAWAI TAKASHI

    IPC: C08J9/28 ,  B01D71/52 ,  B01D71/54 ,  B01D71/80 ,  C08J5/18

    Abstract: PURPOSE:To obtain a better performance membrane as a selective permeable membrane easily from a block polyether-urethane copolymer composed of polyurethane and polyethylene glycol. CONSTITUTION:The block polyether-urethane copolymer is prepared from ethylene glycol, a polyurethane whose main component is 4,4'-diphenylmethanediisocyanate, and polyethylene glycol, and then the copolymer thus obtained is made into the membrane which can be used as the selective permeable membrane for the dialysis of blood, etc. Thus, the membrane having excellent selective perviousness can be easily manufactured by a simplified process.

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