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    POLYIMIDE HAVING EXCELLENT THERMAL-OXIDATIVE STABILITY AND ITS PRODUCTION
    51.
    发明专利
    POLYIMIDE HAVING EXCELLENT THERMAL-OXIDATIVE STABILITY AND ITS PRODUCTION 失效

    公开(公告)号：JPH07165913A

    公开(公告)日：1995-06-27

    申请号：JP31779793

    申请日：1993-12-17

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI MASAJI ,  SHIBUYA ATSUSHI ,  KOGA NOBUSHI ,  YAMASHITA WATARU ,  YAMAGUCHI TERUHIRO

    IPC: C08G73/10

    Abstract: PURPOSE:To obtain the polyimide useful for electric.electronic devices, devices for space navigation, having a specific iron content by reacting a diamine compound with a tetracarboxylic aid anhydride. CONSTITUTION:This polyimide is obtained by heating and melting (A) a diamine compound of formula I (R1 is one or more bifunctional groups selected from a 2-45C aliphatic group, cyclocaliphatic, monocyclic bifunctional group) (e.g. ethylenediamine, 1,4-diaminobutane, 1,4-diaminocyclohexane or m- phenylenediamine) and (B) a tetracarboxylic acid dianhydride of formula II (R2 is a 4-27C aliphatic, cycloaliphatic or monocyclic aliphatic tetrafunctional group) (e.g. butanetetracarboxylic acid dianhydride or cyclopentanetetracarboxylic acid dianhydride) preferably in the presence of an organic solvent. The resultant polyimide has

    55.
    发明专利
    失效

    公开(公告)号：JPH05306387A

    公开(公告)日：1993-11-19

    申请号：JP11116792

    申请日：1992-04-30

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OIKAWA HIDEAKI ,  TAMAI MASAJI ,  IIYAMA KATSUAKI ,  KAWASHIMA SABURO ,  ASANUMA TADASHI ,  YAMAGUCHI TERUHIRO

    IPC: C08G73/10 ,  C09J179/08 ,  H05K3/38

    Abstract: PURPOSE:To obtain an adhesive bondable at low temperature under low pressure, useful for electronic materials, etc., having excellent adhesiveness, comprising a polyamic acid having a specific repeating structural unit, etc. CONSTITUTION:The adhesive comprises a polyamic acid and/or a polyimide which contains polymer molecule ends hindered with an aromatic dicarboxylic acid anhydride (e.g. phthalic anhydride) of formula I (Z is bifunctional group selected from a group consisting of monocyclic aromatic group and noncondensed polycyclic aromatic group) and has a repeating structural unit of formula II [Y is group of formula III or IV (X is direct bond, CO or O bifunctional group). The adhesive is preferably dissolved in a solvent to give a solution, which is used for adhesion.

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