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    32.
    发明专利
    未知

    公开(公告)号：DE69026852T2

    公开(公告)日：1996-12-12

    申请号：DE69026852

    申请日：1990-02-20

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUTSUMI TOSHIHIKO ,  MORIKAWA SHUICHI ,  NAKAKURA TOSHIYUKI ,  KOGA NOBUHITO

    IPC: C08J5/06

    Abstract: Provided are carbon-fiber-reinforced polyimide resin compositions having excellent mechanical strength. The compositions are formed of (a) 5-50 parts by weight of carbon fibers, which have been obtained by coating starting carbon fibers at surfaces thereof with an aromatic polysulfone resin and then heating the thus-coated carbon fibers at 300-400 DEG C, and (b) 95-50 parts by weight of a polyimide resin which preferably have recurring units of following formula: wherein X represents a specific divalent radical and R represents a particular tetra-valent radical.

    33.
    发明专利
    未知

    公开(公告)号：DE3751839D1

    公开(公告)日：1996-07-18

    申请号：DE3751839

    申请日：1987-07-10

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： YAMAYA NORIMASA ,  KOGA NOBUHITO ,  OHTA MASAHIRO ,  YAMAGUCHI AKIHIRO

    IPC: C08G73/12

    Abstract: 1. A thermosetting resin composition which comprises a bismaleimide derivative having the formula (I): and a diamine derivative having the formula (II): wherein R is a divalent radical represented by or where X is selected from a bond, a divalent hydrocarbon radical having 2 carbon atoms, hexafluorinated isopropylidene radical, carbonyl radical, thio radical and sulfinyl radical. A thermosetting resin prepolymer may be obtained by conducting heat-treatment of the thermosetting resin composition at a temperature of 70 to 220 DEG C in the presence or absence of a solvent.

    34.
    发明专利
    未知

    公开(公告)号：DE68920824T2

    公开(公告)日：1995-08-31

    申请号：DE68920824

    申请日：1989-11-06

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： NAGAHIRO TAIZO ,  OHTA MASAHIRO ,  MORIKAWA SHUICHI ,  KOGA NOBUHITO ,  TAMAI SHOJI

    IPC: C08G73/10 ,  D01F6/74

    Abstract: The process includes thermal or chemical imidation of a polyamic acid which has been obtained by reacting a specific diamine and a particular tetracarboxylic dianhydride in the presence of a dicarboxylic anhydride represented by the following formula: wherein Z represents a divalent group selected from monocyclic aromatic groups, fused polycyclic aromatic groups and non-fused polycyclic aromatic groups with aromatic rings bonded together directly or via a crosslinking member. The basic skeletal structure is e

    35.
    发明专利
    未知

    公开(公告)号：DE68920824D1

    公开(公告)日：1995-03-09

    申请号：DE68920824

    申请日：1989-11-06

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： NAGAHIRO TAIZO ,  OHTA MASAHIRO ,  MORIKAWA SHUICHI ,  KOGA NOBUHITO ,  TAMAI SHOJI

    IPC: C08G73/10 ,  D01F6/74

    Abstract: The process includes thermal or chemical imidation of a polyamic acid which has been obtained by reacting a specific diamine and a particular tetracarboxylic dianhydride in the presence of a dicarboxylic anhydride represented by the following formula: wherein Z represents a divalent group selected from monocyclic aromatic groups, fused polycyclic aromatic groups and non-fused polycyclic aromatic groups with aromatic rings bonded together directly or via a crosslinking member. The basic skeletal structure is e

    36.
    发明专利
    未知

    公开(公告)号：DE3784842T2

    公开(公告)日：1993-08-19

    申请号：DE3784842

    申请日：1987-04-08

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： YAMAYA NORIMASA ,  KOGA NOBUHITO ,  BABA KENICHI

    IPC: C08K7/02 ,  C08L79/08 ,  H01B3/30

    Abstract: New polyimide resin compsn. is composed of 100 pts. by wt. of a polyimide having repeat units represented by general formula (I) and 5 to 100 pts. by wt. of fibrous reinforcing material, where Y represents a direct bond, a divalent 1-10C hydrocarbyl gp., a hexafluoroisopropylidene gp., a carbonyl gp., or a oxido gp. R represents a tetravalent 2 or more C aliphatic gp., an alicyclic gp., a monocyclic aromatic gp., a fused polycyclic aromatic gp., or a non-fused cyclic aromatic gp. in which aromatic gps. are linked direct to each other or via a linking member. The polyimide can have an isopropylidene gp. for Y in general formula (1), it can have a direct bond for Y and (II) for R, it can have an isopropylidene gp. for Y and (III) for R, etc. The fibrous reinforcing material can be glass fibres, carbon fibres, potassium titanate fibres or aromatic polyamide fibres.

    37.
    发明专利
    未知

    公开(公告)号：DE3781843T2

    公开(公告)日：1993-03-25

    申请号：DE3781843

    申请日：1987-07-10

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： YAMAYA NORIMASA ,  KOGA NOBUHITO ,  OHTA MASAHIRO ,  YAMAGUCHI AKIHIRO

    IPC: C08G73/12

    Abstract: 1. A thermosetting resin composition which comprises a bismaleimide derivative having the formula (I): and a diamine derivative having the formula (II): wherein R is a divalent radical represented by or where X is selected from a bond, a divalent hydrocarbon radical having 2 carbon atoms, hexafluorinated isopropylidene radical, carbonyl radical, thio radical and sulfinyl radical. A thermosetting resin prepolymer may be obtained by conducting heat-treatment of the thermosetting resin composition at a temperature of 70 to 220 DEG C in the presence or absence of a solvent.

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