中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

323 records (took 0.029 seconds)

    1.
    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.

    3.
    发明专利
    未知

    公开(公告)号：DE69117120D1

    公开(公告)日：1996-03-28

    申请号：DE69117120

    申请日：1991-09-06

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI SHOJI ,  KAWASHIMA SABURO ,  YAMAGUCHI KEIZABURO ,  ISHIHARA YUKO ,  OIKAWA HIDEAKI ,  YAMAGUCHI AKIHIRO ,  KATAOKA TOSHIYUKI

    IPC: C07C225/22 ,  C08G73/10

    Abstract: Disclosed are a novel aromatic diamine; a polyimide comprising 1,3-bis(3-aminobenzoyl)benzene or 4,4 min -bis(3-aminobenzoyl)biphenyl as a diamine component and having recurring structural units represented by the formula (III): wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having from 2 to 27 carbon atoms, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, and noncondensed aromatic radical connected each other with a direct bond or a bridge member, and X is a divalent radical of or ; and a polyimide having a terminal aromatic group which is essentially unsubstituted or substituted with a radical having no reactivity with amines or dicarboxylic acid anhydrides or a composition comprising said polyimide.

    HOCHTEMPERATUR-POLYIMIDKLEBSTOFF.
    5.
    发明专利
    HOCHTEMPERATUR-POLYIMIDKLEBSTOFF. 未知

    公开(公告)号：DE3783477D1

    公开(公告)日：1993-02-25

    申请号：DE3783477

    申请日：1987-02-20

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10 ,  C09J179/08 ,  B32B27/04

    Abstract: This invention discloses high-temperature adhesives having a good light-transmittance and excellent high-temperature flowability which comprises polyimide having recurring units represented by the following formula (I) (where R is a tetra-valent radical selected from the group consisting of aliphatic radical having not less than two carbons, cyclo-aliphatic radical, monoaromatic radical, condensed polyaromatic radical, and non condensed polyaromatic radical wherein aromatic radicals are mutally connected with a bond or a crosslinking function).The ployimide is obtained by preparing polyamic acid through the reaction of 2,2-bis[4-(3-aminophenoxy)phenyl]-1,1,1,3,3,3,-­hexafluoropropane as a diamine component with tetracarboxylic dianhydride such as pyromellitic dianhydride, 3,3ʹ,4,4ʹ-­biphenyltetracarboxylic dianhydride, bis(3,4-dicarboxyphenyl) ether dianhydride and 3,3ʹ4,4ʹ-benzophenonetetracarboxylic dianhydride, and further conducting the ring-closing reaction of resultant polyamic acid by dehydration.

    PROCESS FOR PREPARING POLYMIMIDES
    6.
    发明专利
    PROCESS FOR PREPARING POLYMIMIDES 未知

    公开(公告)号：AU604402B2

    公开(公告)日：1990-12-13

    申请号：AU3073489

    申请日：1989-02-24

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OHTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  TAMAI SHOJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI AKIHIRO

    IPC: C08G73/10 ,  C08G73/14

    Abstract: A process for preparing a polyimide by reaction of a diamine and a tetracarboxylic dianhydride to obtain a polyamide acid and subjecting the polyamide acid to conversion into a polyimide thermally or chemically. The reaction in the process is carried out in the presence of at least one dicarboxylic anhydride selected from the group consisting of aliphatic dicarboxylic anhydrides and aromatic dicarboxylic anhydrides, and the amount of the tetracarboxylic dianhydride is in the range of from 0.9 to 1.0 mole per mole of the diamine and the amount of the dicarboxylic anhydride is in the range of from 0.001 to 1.0 mole per mole of the diamine. The resultant polyimides exhibit good thermal stability at high temperatures and good forming processability even at low temperatures.

    POLYIMIDE AND HIGH-TEMPERATURE ADHESIVE OF POLYIMIDE
    7.
    发明专利
    POLYIMIDE AND HIGH-TEMPERATURE ADHESIVE OF POLYIMIDE 未知

    公开(公告)号：GB2199586B

    公开(公告)日：1990-05-23

    申请号：GB8700164

    申请日：1987-01-06

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI SHOJI ,  KAWASIMA SABURO ,  SONOBE YOSHIHO ,  OHTA MASAHIRO ,  OIKAWA HIDEAKI ,  YAMAGUCHI AKIHIRO

    IPC: C08G73/00 ,  C08G73/10 ,  C09J5/06 ,  C09J179/08 ,  C09J3/16

    Abstract: This invention relates to a novel polyimide and describes method of its preparation, adhesives of the polyimide and the method for their application.The polyimide has recurring units of the formula(where R is a tetra-valent radical selected from the group consisting of aliphatic radical having not less than two 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).The polyimide can be prepared by reacting 2,6-bis(3--amino-phenoxy)pyridine with tetracarboxylic dianhydride in an organic solvent and imidizing resultant polyamic acid.Various tetracarboxylic dianhydrides can be used and particularly preferred are pyromellitic dianhydride and 3,3',4,4'--benzophenonetetracarboxylic dianhydride.

    POLYIMIDE RESIN COMPOSITION
    10.
    发明专利
    POLYIMIDE RESIN COMPOSITION 未知

    公开(公告)号：AU592502B2

    公开(公告)日：1990-01-11

    申请号：AU1674388

    申请日：1988-05-27

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OHTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  TAMAI SHOJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI AKIHIRO

    IPC: C08L79/08 ,  C08L81/04

    Abstract: The invention relates to molding resin compositions, and more particularly relates to polyimide resin compositions having markedly improved molding ability in addition to excellent high temperature stability, chemical resistance and mechanical strength. The polyimide resin compositions of this invention consist of 99.9 to 50% by weight of the polyimide and 0.1 to 50% by weight of high-temperature engineering polymer. The polyimide consists of recurring units of the following formula: wherein X is direct bond, thio radical, or o- or p-phenylene dicarbonyl radical and R is a tetravalent radical selected from an aliphatic radical, alicyclic radical, monoaromatic radical, condensed aromatic radical and non-condensed aromatic radical. R is, for example, The high-temperature engineering polymer is, for example, polyphenylene sulfide consisting of recurring units of the formula: aromatic polysulfone consisting of recurring units of the formula: or aromatic polyetherimide consisting of recurring units of the formula:

Patent Agency Ranking