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    32.
    发明专利
    未知

    公开(公告)号：DE3650656T2

    公开(公告)日：1998-04-30

    申请号：DE3650656

    申请日：1986-06-30

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OHTA MASAHIRO ,  KAWASHIMA SABURO - - ,  SONOBE YOSHIHO ,  TAMAI SHOJI ,  OIKAWA HIDEAKI ,  OHKOSHI KOUJI - - ,  YAMAGUCHI AKIHIRO - -

    IPC: C08G73/10 ,  C09J179/08

    Abstract: Polyimide having repeating units of the following formula (I) and its polyamic acid precursor having repeating units of the following formula (II) are disclosed; (where Y is a radical selected from the group consisting of a bond, divalent hydrocarbon having 1 to 10 carbons, hexafluorinated isopropylidene, carbonyl, thio, sulfinyl, sulfonyl and oxide, and R is a tetra-valent radical selected from the group consisting of aliphatic radical having 2 and more carbons, cyclo-aliphatic radical, monoaromatic radical, condensed polyaromatic radical, and non-condensed polyaromatic radical wherein aromatic radicals are mutually connected with a bond or a crosslinking function). Typical examples of polyimide and polyamic acid include where Y is thio radical and R is Y is a bond and R is III or IV, and Y is isopropylidene radical and R is IV. The polymers can be prepared from corresponding diamine and tetracarboxylic acid dianhydride. Polyimide or polyamic acid of this invention is excellent for high-temperature adhesive.

    33.
    发明专利
    未知

    公开(公告)号：DE69127137D1

    公开(公告)日：1997-09-11

    申请号：DE69127137

    申请日：1991-05-30

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI SHOJI ,  YAMAGUCHI AKIHIRO ,  OHTA MASAHIRO

    IPC: C08G73/10

    Abstract: A readily melt processable polyimide obtained by reacting diamine represented by the formula: wherein n is an integer of 1 or 2, with 3,3',4,4'-diphenylethertetracarboxylic dianhydride and/or 4,4'-(p-phenylenedioxy)diphthalic dianhydride or a mixture of these tetracarboxylic acid dianhydrides and pyromellitic dianhydride in the presence of phthalic anhydride, is disclosed.

    34.
    发明专利
    未知

    公开(公告)号：DE69209172T2

    公开(公告)日：1996-10-17

    申请号：DE69209172

    申请日：1992-01-20

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OHTA MASAHIRO ,  MATSUYAMA AKIO ,  SENOUE EIJI ,  KUWANO FUMIAKI ,  YASUI OSAMU ,  YOSHIDA YASUNORI ,  RYU AKINORI ,  KOBAYASHI TADASHI

    IPC: C07D209/48 ,  C07D209/66 ,  C07D487/04 ,  C08G73/10 ,  C08G73/12 ,  C08K5/3417 ,  C08K9/04 ,  C08L79/08 ,  C09D179/08

    Abstract: A polyimide resin composition for molding, which comprises a polyimide resin and an aromatic bisimide compound and has a melt flowability and an excellent processability in addition to the heat resistance inherent in polyamide; a carbon fiber-reinforced polyimide resin composition which comprises a polyimide resin and carbon fibers coated with an aromatic bisimide compound and has excellent mechanical strengths; and novel bisimide compounds represented by general formula (I), which are very useful as the aromatic bisimide compounds in the above resin compositions, wherein X represents a direct bond, C1 to C10 divalent hydrocarbyl, hexafluoroisopropylidene, carbonyl, thio or sulfonyl; Y1 to Y4 represent each independently hydrogen, lower alkyl, lower alkoxy, chlorine or bromine; and R represents a divalent group selected from the group consisting of monocyclic aromatic groups, fused polycyclic aromatic groups, and nonfused polycyclic aromatic groups wherein aromatic groups are linked together directly or through cross-linking member(s).

    POLYIMIDE
    37.
    发明专利
    POLYIMIDE 未知

    公开(公告)号：CA2028358C

    公开(公告)日：1995-08-22

    申请号：CA2028358

    申请日：1990-10-23

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI SHOJI ,  OHTA MASAHIRO ,  YAMAGUCHI AKIHIRO

    IPC: C08G73/10 ,  H01L23/29

    Abstract: A polyimide having a high heat-resistance, good processability and recurring structural units of the formula (I): (I) wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having at least two carbon atoms, alicyclic radical, monocyclic aromatic radical, fused polycyclic aromatic radical and polycyclic aromatic radical bonded through a direct bond or a bridge member.

    39.
    发明专利
    未知

    公开(公告)号：DE3850706T2

    公开(公告)日：1995-03-23

    申请号：DE3850706

    申请日：1988-05-17

    Applicant: MITSUI TOATSU CHEMICALS ,  NTN TOYO BEARING CO LTD

    Inventor： YOSHIKAWA MASAO ,  OHTA MASAHIRO

    IPC: C08L79/08

    Abstract: Heat resistant resin compositions consisting essentially of 5-95 wt.% of polyimide composed of recurring units represented by the formula (I): wherein X and Y are the same as defined in the claims, and 95-5 wt.% of known aromatic polyetherimide are disclosed. The resin compositions of this invention have good thermal stability in the high temperature region, particularly in the temperature range of 300-400 DEG C. The compositions can be injection molded due to the retention of frictional property in aromatic polyetherimide and also have thermal resistance, impact resistance and abrasion resistance. Therefore the compositions can be widely used as the material of parts in any industrial fields such as automotives, business machines, electric and electronic appliances, automatic energy saving devices, aeronautics and space instruments and general purpose industrial machines, which renders this invention very valuable.

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