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    1.
    发明专利
    未知

    公开(公告)号：DE2900264A1

    公开(公告)日：1979-07-12

    申请号：DE2900264

    申请日：1979-01-04

    Applicant: UBE INDUSTRIES

    Inventor： KANEDA TAKAHO ,  ISHIKAWA SEIJI ,  DAIMON HIROSHI ,  KATSURA TOSHIO ,  HONDO TADAHIRO ,  UEDA MASAHIRO

    IPC: D01F6/80 ,  C08G69/32 ,  C08L77/00

    Abstract: A novel copolyamide fiber having an excellent initial modulus of elasticity and mechanical strength, is made from a copolyamide consisting essentially of unit A of the formula (A): (A) unit (B) of the formula (B): (B) and unit (C) of the formula (C): (C) wherein CH3 groups in the formula (A) are located in the ortho-position to NH groups, the sum of the amount of units (A) and (B) is substantially equimolar to the amount of unit (C) and the molar ratio of unit (A) to unit (B) is from 10/90 to 50/50.

    2.
    发明专利
    未知

    公开(公告)号：DE2723867A1

    公开(公告)日：1978-01-05

    申请号：DE2723867

    申请日：1977-05-26

    Applicant: UBE INDUSTRIES

    Inventor： KANEDA TAKAHO ,  ISHIKAWA SEIJI ,  DAIMON HIROSHI ,  KATSURA TOSHIO ,  MAEDA TATSUAKI ,  ICHIHARA CHIBA ,  HONDO TADAHIRO

    IPC: C08G69/26 ,  C08G69/42 ,  C08G73/06 ,  D01F6/80

    Abstract: Fibers of a copolyamide derived from a diamine component including 10 to 50 mole % of benzidine sulfone or 2,7-diaminophenanthridone and 90 to 50 mole % of p-phenylene diamine and a dicarboxylic acid component derived from a reactive derivative of terephthalic acid are disclosed. The fibers have an initial modulus of elasticity of at least 400 g/d and a tensile strength of at least 16 g/d. The fibers have in combination various desirable properties, such as excellent initial modulus of elasticity, high tensile strength, high knot strength, high heat resistance and good adhesiveness to various plastics, rubbers and adhesives, and they are valuably used in various industrial fields as fibrous reinforcers and for production of fiber-reinforced plastics and rubber products.

    PREPARATION OF AROMATIC POLYAMIDE
    5.
    发明专利
    PREPARATION OF AROMATIC POLYAMIDE 失效

    公开(公告)号：JPS5586819A

    公开(公告)日：1980-07-01

    申请号：JP15577278

    申请日：1978-12-19

    Applicant: UBE INDUSTRIES

    Inventor： KANEDA TAKAHO ,  KATSURA TOSHIO ,  ISHIKAWA SEIJI

    IPC: C08G69/00 ,  C08G69/32

    Abstract: PURPOSE:To obtain the title polyamide useful as film materials, etc. in good operating efficiency, by reacting an aromatic diamine and an aromatic dicarboxylic dihalide in a nitrogen-containing organic solvent having a specific amount of 1,3-dimethyl-2-imidazolidinone. CONSTITUTION:30-80Vol% of 1,3-dimethyl-2-imidazolidinone is added to a nitrogen-containing organic solvent, e.g., N,N-dimethylacetamide, N-methyl-2-pyrrolidone. In the resulting solvent, an aromatic diamine, e.g., p-phenylenediamine, methyl p-phenylenediamine, 2,6-diaminonaphthylene, benzidine-sulfonic acid is reacted with an aromatic dicarboxylic dihalide, e.g., terephthaloyl dichloride, tetrachloroterephthaloyl dichloride at a temperature range of not higher than 60 deg.C, preferably about 20-50 deg.C under stirring and the reaction product is neutralized to give the desired polyamide.

    POLYIMIDE FIBER AND PRODUCTION THEREOF
    7.
    发明专利
    POLYIMIDE FIBER AND PRODUCTION THEREOF 失效

    公开(公告)号：JPS60215812A

    公开(公告)日：1985-10-29

    申请号：JP6907984

    申请日：1984-04-09

    Applicant: UBE INDUSTRIES

    Inventor： KANEDA TAKAHO ,  KATSURA TOSHIO ,  NAKAGAWA KANJI

    IPC: D01F6/74 ,  C08G73/10 ,  D01D5/00 ,  D01F6/78 ,  D02J1/22

    Abstract: PURPOSE:To obtain the titled fibers having a high level of strength and elasticity and further improved moisture and light resistance, by melt spinning a copolyimide having repeating units derived from a specific aromatic diamine component and aromatic tetracarboxylic acid component. CONSTITUTION:A copolyimide, having repeating units derived from (A) an aromatic diamine component constituted of a mol component of formula I and if necessary b mol component of formula II and (B) an aromatic tetracarboxylic acid component constituted of c mol component of formula III and if necessary d mol component of formula IV in amounts satisfying the formula a+b= c+d at 0-1 ratio (b/a) and 0-3/7 ratio (d/c) and >=1.5 logarithmic viscosity number (inherent viscosity) is dissolved in a phenolic solvent to prepare a dope, which is then extruded into air, molded into a filament shape and coagulated in a coagulation bath. The resultant filaments are wound, washed, dried and hot-drawn at 250-420 deg.C at >=2 draw ratio to give the aimed fibers.

    PREPARATION OF DIBENZOTHIOPHENEE5*55DIOXIDE
    10.
    发明专利
    PREPARATION OF DIBENZOTHIOPHENEE5*55DIOXIDE 失效

    公开(公告)号：JPS5416465A

    公开(公告)日：1979-02-07

    申请号：JP8100877

    申请日：1977-07-08

    Applicant: UBE INDUSTRIES

    Inventor： KANEDA TAKAHO ,  DAIMON HIROSHI

    IPC: C07D333/76

    Abstract: PURPOSE:Dibenzothiophene is oxidized along with an aldehyde to produce in high yield and purity title compound useful as an intermediate for synthesizing synthetic dyes or aromatic polyamide fibers with use of no catalyst and safe and cheap oxidation aid.

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