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    SURFACE TREATMENT OF CARBON YARN
    22.
    发明专利
    SURFACE TREATMENT OF CARBON YARN 失效

    公开(公告)号：JPH01168963A

    公开(公告)日：1989-07-04

    申请号：JP32649987

    申请日：1987-12-22

    Applicant: TORAY INDUSTRIES

    Inventor： HIRAMATSU TORU ,  TAKAI TOSHIAKI ,  KOMATSU HIDEO

    IPC: D06M10/00 ,  D06M101/00 ,  D06M101/40

    Abstract: PURPOSE:To form an oxygen-containing functional group effective for improving bond strength of resin at low voltage and in a short time without problems of corrosion of device, by using carbon yarn as an anode and carrying out electrolytic treatment in an aqueous solution of an organic strongly alkali substance or an weakly acidic salt thereof. CONSTITUTION:Carbon yarn is used as an anode and electrolytic treatment is efficiently carried out in an aqueous solution of an organic strongly alkali substance or an weakly acidic salt thereof at low voltage (2-35 volt) and in a short time (3-30 seconds) to form an oxygen-containing functional group effective for improving bond strength to various kinds of resins. A tetraalkylammonium hydroxide such as compounds wherein the alkyl group is methyl group, ethyl group, propyl group or butyl group may be cited as the organic strongly alkali substance and a salt of the tetraalkylammonium hydroxide and formic acid, acetic acid, propionic acid, butyric acid, carbonic acid or bicarbonic acid as the weakly acidic salt of the organic strongly alkali substance.

    CARBON FIBER EXHIBITING ULTRAHIGH-STRENGTH COMPOSITE PROPERTY
    24.
    发明专利
    CARBON FIBER EXHIBITING ULTRAHIGH-STRENGTH COMPOSITE PROPERTY 失效

    公开(公告)号：JPS61296123A

    公开(公告)日：1986-12-26

    申请号：JP13422485

    申请日：1985-06-21

    Applicant: TORAY INDUSTRIES

    Inventor： HIRAMATSU TORU ,  HIGUCHI TOMIMASA ,  KOMATSU HIDEO

    IPC: D06M10/00 ,  D01F9/12 ,  D01F9/22 ,  D06M101/00 ,  D06M101/40

    Abstract: PURPOSE:Carbon fibers, having a specific high average fiber tensile strength and tensile strength of resin-impregnated strand and further ultrahigh-strength fiber properties and capable of giving composite materials having an ultrahigh strength with very little resin dependence and exhibiting ultrahigh-strength composite properties. CONSTITUTION:Ammonia is blown into a solution of a copolymer of acrylonitrile with a small amount of itaconic acid, etc., to modify the copolymer, and the reultant solution is extruded and spun through a spinneret into a coagulation bath. The resultant fibers are then washed with water and dried to give acrylic fibers, which are heat-treated in air at 240-260 deg.C temperature and then carbonized by increasing the temperature to 1,200 deg.C in nitrogen atmosphere to afford carbon fibers. The carbon fibers are treated in a treating bath filled with an aqueous solution of nitric acid while applying a positive voltage thereto and heat-treated in nitrogen atmosphere at 700 deg.C to give the aimed carbon fibers having at least 530kg/mm average fiber tensile strength and >=650kg/mm tensile strength of a resin-impregnated strand.

    HIGH-STRENGTH, ULTRAFINE ACRYLIC FIBERS AND PRODUCTION THEREOF
    26.
    发明专利
    HIGH-STRENGTH, ULTRAFINE ACRYLIC FIBERS AND PRODUCTION THEREOF 失效

    公开(公告)号：JPS61167012A

    公开(公告)日：1986-07-28

    申请号：JP324785

    申请日：1985-01-14

    Applicant: TORAY INDUSTRIES

    Inventor： TANAKA HIROYOSHI ,  KOMATSU HIDEO

    IPC: D01F6/18 ,  H03F3/45

    Abstract: PURPOSE:An acrylonitrile polymer solution of a specific intrinsic viscosity is made into fibers through a specific dry-wet process, drawn, then subjected to the secondary drawing at a specific draw ratio to give the titled fibers of ultrafineness, high strength and reduced fusion between filaments. CONSTITUTION:An acrylonitrile polymer solution of more than 2 intrinsic viscosity and more than 1,000 poise solution viscosity at 45 deg.C is filtered with a filter of less than 5mu sieve opening. The resultant spinning dope is extruded through a spinneret having 50 or more nozzle holes of less than 0.12mmphi diameter into air or inert gas atmosphere and allowed to run therein, then introduced into a coagulation bath. The resultant fiber yarn is washed with water, drawn and dried, further subjected to the second drawing so that the total draw ratio exceeds 10 based on their original filament length to give the objective fibers of higher than 10g/d tensile strength, higher than 4g/d loop strength and less than 1 denier filament fineness.

    PREPARATION OF DICARBOXYLIC ACID OR ESTER THEREOF
    28.
    发明专利
    PREPARATION OF DICARBOXYLIC ACID OR ESTER THEREOF 失效

    公开(公告)号：JPS58131938A

    公开(公告)日：1983-08-06

    申请号：JP1186482

    申请日：1982-01-29

    Applicant: TORAY INDUSTRIES

    Inventor： INOUE SHIYUNEI ,  KOMATSU HIDEO

    IPC: C07C69/92 ,  C07C51/00 ,  C07C51/363 ,  C07C65/24 ,  C07C67/00

    Abstract: PURPOSE:To prepare the titled compound in high yield, by reacting an alpha,omega- bis(phenoxy)alkane-4,4'-dicarboxylic acid which is a raw material for a polyester as a starting material with chlorine in a 2-6C halogenated lower fatty acid as a solvent. CONSTITUTION:An alpha,omega-bis(phenoxy)alkane-4,4'-dicarboxylic acid or an ester thereof is reacted with chlorine in a 2-6C halogenated lower fatty acid, e.g. monochloroacetic acid, dichloroacetic acid or trichloroacetic acid, as a slovent to give an alpha,omega-bis(2,6-dichlorophenoxy)alkane-4,4'-dicarboxylic acid which is an aromatic dicarboxylic acid containing four chlorine atoms linked to the given positions of the benzene nucleus or an ester thereof. USE:A raw material for fiber-forming polyesters having a high elasticity and self-extinguishing characteristics.

    PREPARATION OF BISSBETAAHYDROXYETHYL TEREPHTHALATE AND LOWW MOLECULAR CONDENSATE OF THE SAME AND APPARATUS FOR PREPARING THE SAME
    29.
    发明专利
    PREPARATION OF BISSBETAAHYDROXYETHYL TEREPHTHALATE AND LOWW MOLECULAR CONDENSATE OF THE SAME AND APPARATUS FOR PREPARING THE SAME 失效

    公开(公告)号：JPS5640645A

    公开(公告)日：1981-04-16

    申请号：JP11622479

    申请日：1979-09-12

    Applicant: TORAY INDUSTRIES

    Inventor： HARADA HIROYUKI ,  KOMATSU HIDEO

    IPC: C07C69/82 ,  C07C67/08

    Abstract: PURPOSE:To obtain the titled compound useful as a raw material for PET at a high reaction rate economically, by esterifying terephthalic acid with ethylene glycol batchwise while retaining part of the reflux from a rectifying column between the bottom of the rectifying column and a reactor. CONSTITUTION:Terephthalic acid is esterified with ethylene glycol (hereinafter referred to as EG) batchwise in an esterification reactor 3 with a rectifying column 7 while retaining part of the reflux in a reflux retaining pot 12 provided between the rectifying column 7 and the reactor 3 to give the titled compound. The pot 12 is characterized by an overflow line 14, a reflux line leading the retained EG to the reactor 3 and a reflux line 16 connecting to the rectifying column 17. The titled compound with a low content of diethylene glycol can be obtained stably, and the method and the apparatus are effective for measures of energy conservation and resource saving.

    POLYESTER FILAMENT YARN FOR REINFORCING RUBBER
    30.
    发明专利
    POLYESTER FILAMENT YARN FOR REINFORCING RUBBER 失效

    公开(公告)号：JPS55158335A

    公开(公告)日：1980-12-09

    申请号：JP6379279

    申请日：1979-05-25

    Applicant: TORAY INDUSTRIES

    Inventor： OKADA TAKEHIKO ,  UEMATSU HISASHI ,  KOMATSU HIDEO

    IPC: D01F11/08

    Abstract: PURPOSE:To prevent the deterioration of the strength of the titled filament yarn (FY) in rubber vulcanization, by controlling the oil pickup of the FY for reinforcing rubber at a specific value or below. CONSTITUTION:The oil pickup of a polyester filament yarn (FY) is controlled at 0.3wt% or less, preferably 0.2wt% or less, by reducing the amount of the oil in application, or removing the oil after drawing, most preferably removing the oil after processing into a cord.

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