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公开(公告)号：JPS5543139A
公开(公告)日：1980-03-26
申请号：JP11636178
申请日：1978-09-21
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
Abstract: PURPOSE:The reaction between p-dihalobenzene and alkali sulfide is conducted in an organic amide solvent in the presence of an alkali salt of organic sulfonate to produce title composition having high polymerization degree and being melt moldable. CONSTITUTION:The reaction of p-dihalobenzene with alkali sulfide except lithium sulfide is carried out in an oarganic amide solvent in the presence of at least one of aromatic sulfonate alkali metal salts of formula I and II (R is 1-12C alkyl, n is 0-2, M is Na, K, Rb, Cs) to produce high-viscosity poly-p-phenylene sulfied. The p-dihalobenzene used is preferably p-dichlorobenzene and the molar ratio of the p- dihalobenzene to the alkali sulfide is 0.95:1-1.2:1. The molar ratio of the aromatic sulfonate alkali metal salt added to the alkali sulfide is 0.1-1.5.
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公开(公告)号：JPS5522052A
公开(公告)日：1980-02-16
申请号：JP9369478
申请日：1978-08-02
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
Abstract: PURPOSE:An aromatic polyamide copolymer that has a combination of specific structure units, thus being high soluble in an organic solvent is employed to produce title fibers with a strength of over about 16g/de, a Young modulus of over about 300g/de and high fatigue resistance. CONSTITUTION:An aromatic copolyamide that comprises structure unit A of formula I, unit B of formula II, and unit C of formula III and has MA, MC, mole% of units A and C respectively, satisfying 10
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公开(公告)号：JPS5390423A
公开(公告)日：1978-08-09
申请号：JP486877
申请日：1977-01-21
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
IPC: C08L33/00 , C08L33/02 , C08L33/18 , C08L33/20 , C08L51/00 , C08L51/02 , C08L77/00 , D01F6/38 , D01F6/54
Abstract: PURPOSE:Acrylonitrile is grafted onto a polyurethane, polyurea, or polyesterurethane polymer or copolymer, thereby acrylic fibers having improved resistance to moist heat and permitting piece drying are produced.
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公开(公告)号：JPH06106045A
公开(公告)日：1994-04-19
申请号：JP26181192
申请日：1992-09-30
Applicant: TORAY INDUSTRIES
Inventor： KAWAI TAKASHI
IPC: B01J10/02 , B01J19/00 , B01J19/24 , B01J31/06 , C01B15/023
Abstract: PURPOSE:To easily control, to shorten reaction time, to enable production in a flow system and to improve productivity by causing a raw material and an oxidizing agent or reducing agent to flow on one side of a separation membrane and on the opposite side of the membrane respectively. CONSTITUTION:A raw material 1 and an oxidizing agent or reducing agent 7 are transferred to a separation membrane module or separation membrane element 4 by a pump 2 and a pump 8 respectively. The raw material side and the oxidizing agent or reducing agent side are distinguished by a separation membrane 10, not causing the raw material to enter the oxidizing agent or reducing agent side. Since the membrane area per module or element 4 is large, the oxidizing agent or reducing agent is thoroughly dispersed and fed to uniformly execute oxidation-reduction reaction, allowing a product 5 to be obtained. Consequently it is not possible that an excess oxidizing agent or reducing agent not required for reaction is mixed to generate insufficiently dissolved bubbles in the raw material. In addition, the feed quantity of the oxidizing agent or reducing agent is controlled by a simple operation and oxidation-reduction reaction is executed in a flow system uniformly and in a short time.
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公开(公告)号：JPH0448488B2
公开(公告)日：1992-08-06
申请号：JP5439784
申请日：1984-03-23
Applicant: TORAY INDUSTRIES
Inventor： KAWAI TAKASHI , NOGI TATSUO
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Patent Agency Ranking
公开(公告)号：JPH02112407A
公开(公告)日：1990-04-25
申请号：JP26341188
申请日：1988-10-19
Applicant: TORAY INDUSTRIES
Inventor： KAWAI TAKASHI
IPC: A61K47/32 , A61L27/00 , A61L27/16 , A61L27/18 , A61L27/44 , A61L27/52 , C12N11/04 , D01F6/14 , D01F6/50 , D01F6/52
Abstract: PURPOSE:To obtain the subject fiber, having a high mechanical strength and usable in an optional form, such as cut fiber, single yarn or fabric, and useful as vibration damping and water holding materials, etc., by subjecting a hydrous fiber prepared by spinning an aqueous spinning solution of a PVA-based polymer to freezing and thawing treatment. CONSTITUTION:The objective fiber obtained by carrying out conjugate spinning of an aqueous spinning solution of a PVA-based polymer (preferably having >=3000 polymerization degree) with a water-coagulable fiber-forming polymer spinning solution (e.g., polyacrylonitrile-, PE-, PP-, polysiloxane or polyester- based polymer) to provide a hydrous fiber and then subjecting the resultant fiber to freezing treatment (preferably at
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公开(公告)号：JPH01188538A
公开(公告)日：1989-07-27
申请号：JP1319788
申请日：1988-01-22
Applicant: TORAY INDUSTRIES
Inventor： HENMI MASAHIRO , KAWAI TAKASHI , YOSHIOKA TOSHIO
Abstract: PURPOSE:To obtain the subject hollow yarn membrane excellent in chemical and heat resistance, by spinning a spinning solution consisting of a specific fluororesin with an internal injecting solution having low coagulating property and then treating the resultant yarn with a solution of concentrated sulfuric acid and formaldehyde. CONSTITUTION:The aimed hollow yarn membrane obtained by dissolving a fluororesin, such as polyvinyldiene fluoride, consisting of constituent units expressed by the formula -CF2-, -CFRf- and/or -CF(ORf)- in combination with constituent units expressed by the formula -CH2-, -CHF- and/or CClF-, in a polar organic solvent, preferably acetone, dimethyl sulfoxide, etc., to prepare a spinning solution, then spinning the above-mentioned spinning solution using a liquid having low coagulation property for the afore-mentioned fluororesin as an internal injecting solution to form a fluororesin based porous hollow yarn membrane having a gradient type cellular structure and subsequently treating the resultant hollow yarn membrane with a solution consisting of concentrated sulfuric acid and a formaldehyde source.
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公开(公告)号：JPH01164480A
公开(公告)日：1989-06-28
申请号：JP32075087
申请日：1987-12-17
Applicant: TORAY INDUSTRIES
Inventor： KAWAI TAKASHI , KATSU TOMOKO
Abstract: PURPOSE:To simply perform processing with superior heat and alkali resistances by treating a molded body with a dispersion liq. contg. solid particles and polytetrafluoroethylene resin and by heat treating the treated molded body at a temp. above the tm.p. of the resin. CONSTITUTION:Solid particles such as particles of calcium silicate or magnesium carbonate having characteristics such as ability to shield radiation or electromagnetic waves are mixed with polytetrafluoroethylene resin such as tetrafluoroethylene resin to prepare a uniform dispersion liq. and a molded body is treated with the dispersion liq. The treated molded body is then heat treated at a temp. above the m.p. of the resin. By such simple processing, various characteristics such as heat and alkali resistances can be provided to the processed part and the processed part has superior flexibility though it contains the solid particles.
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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
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公开(公告)号：JPS6139408B2
公开(公告)日：1986-09-03
申请号：JP9369478
申请日：1978-08-02
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
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