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    POLYIMIDE AND HIGH-TEMPERATURE ADHESIVE OF POLYIMIDE
    91.
    发明专利
    POLYIMIDE AND HIGH-TEMPERATURE ADHESIVE OF POLYIMIDE 未知

    公开(公告)号：CA1268592A

    公开(公告)日：1990-05-01

    申请号：CA515976

    申请日：1986-08-14

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10 ,  C09J179/08 ,  C09J3/16

    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; (I) (II) (where Y is a divalent 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-allphatic radical, monoaromatic radical, condensed polyaromatic radical, and noncondensed 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 or (III) (IV), 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.

    PROCESS FOR PREPARING POLYMIMIDES
    93.
    发明专利
    PROCESS FOR PREPARING POLYMIMIDES 未知

    公开(公告)号：AU3073489A

    公开(公告)日：1989-11-23

    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.

    PROCESS FOR PREPARING POLYIMIDE AND COMPOSITE MATERIAL THEREOF
    94.
    发明专利
    PROCESS FOR PREPARING POLYIMIDE AND COMPOSITE MATERIAL THEREOF 未知

    公开(公告)号：AU2471588A

    公开(公告)日：1989-05-11

    申请号：AU2471588

    申请日：1988-11-04

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OHTA MASAHIRO ,  KAWASHIMA SABURO ,  TAMAI SHOJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI AKIHIRO ,  KOBA TOMOHITO ,  NAKAKURA TOSHIYUKI ,  SAKAI HIDEO ,  MASUDA MISAO ,  KISHI SATORU ,  MARUKO CHIAKI

    IPC: C08G73/10 ,  C08L79/08

    Abstract: This invention relates to a method for preparing polyimide having good heat-stability and excellent flowability in a molten state. The polymide is prepared by reacting aromatic diamines such as 4,4 min -bis(3-aminophenoxy)biphenyl, bis[4-(3-aminophenoxy)phenyl] ketone and bis [4-(3-aminophenoxy)phenyl] sulfone; tetracarboxylic dianhydrides such as pyromellitic dianhydride, 3,3 min ,4,4 min -benzophenonetetracarboxylic dianhydride and bis(3,4-dicarboxyphenyl) ether dianhydride; and monoamines such as n-hexylamine, cyclohexylamine, aniline, 4-aminobenzophenone. The molar ratio of tetracarboxylic dianhydride : aromatic diamine : monoamine is 1:(0.9 to 1.0):(0.001 to 1.0). Another invention relates to polyimide composite materials which are excellent in mechanical strengths and processability. The materials contain the polyimide above prepared and fibrous reinforcing materials such as yarn, roving, tow, fabrics, mats and felts of glass fiber, carbon fibers or aromatic polyamide fibers.

    POLYIMIDE
    95.
    发明专利
    POLYIMIDE 未知

    公开(公告)号：AU579777B2

    公开(公告)日：1988-12-08

    申请号：AU8124287

    申请日：1987-11-16

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10 ,  C09J3/14

    Abstract: Polyimide of this invention is almost colorless and has remarkably high light transmittance as well as excellent processability and adhesive properties at high temperatures in addition to its substantial high-temperature stability. The polyimide is a novel polyimide capable of being used for space and aeronautical materials, electric and electronic members, automotive parts, and furthermore for high-temperature adhesives. The polyimide has recurring units of the following formula (I): wherein X is a radical selected from the group consisting of a bond, divalent hydrocarbon radical having from 1 to 10 carbons, hexafluorinated isopropylidene radical, carbonyl radical, sulfonyl radical and thio radical, and each nitrogen atom of imide ring is located simultaneously at meta- or para-position to ether linkage. The polyimide of this invention is prepared by reacting 4,4'-(p-phenylenedioxy)diphthalic dianhydride with an ether diamine having the following general formula (V): and successively imidizing the resultant polyamic acid. e

    POLYIMIDE
    98.
    发明专利
    POLYIMIDE 未知

    公开(公告)号：AU8124287A

    公开(公告)日：1988-05-26

    申请号：AU8124287

    申请日：1987-11-16

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10 ,  C09J3/14

    Abstract: Polyimide of this invention is almost colorless and has remarkably high light transmittance as well as excellent processability and adhesive properties at high temperatures in addition to its substantial high-temperature stability. The polyimide is a novel polyimide capable of being used for space and aeronautical materials, electric and electronic members, automotive parts, and furthermore for high-temperature adhesives. The polyimide has recurring units of the following formula (I): wherein X is a radical selected from the group consisting of a bond, divalent hydrocarbon radical having from 1 to 10 carbons, hexafluorinated isopropylidene radical, carbonyl radical, sulfonyl radical and thio radical, and each nitrogen atom of imide ring is located simultaneously at meta- or para-position to ether linkage. The polyimide of this invention is prepared by reacting 4,4'-(p-phenylenedioxy)diphthalic dianhydride with an ether diamine having the following general formula (V): and successively imidizing the resultant polyamic acid. e

    POLYIMIDE
    100.
    发明专利
    POLYIMIDE 未知

    公开(公告)号：AU6867987A

    公开(公告)日：1987-08-13

    申请号：AU6867987

    申请日：1987-02-11

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OIKAWA HIDEAKI ,  OHTA MASAHIRO ,  KAWASHIMA SABURO ,  TAMAI SHOJI ,  SONOBE YOSHIHO ,  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.

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