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    POLYIMIDE ADHESIVE
    31.
    发明专利
    POLYIMIDE ADHESIVE 未知

    公开(公告)号：AU6924587A

    公开(公告)日：1987-08-27

    申请号：AU6924587

    申请日：1987-02-25

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TAMAI SHOJI ,  KAWASHIMA SABURO

    IPC: C08G73/10 ,  C09J3/16

    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.

    COLOR-DEVELOPING COMPOSTION
    38.
    发明专利
    COLOR-DEVELOPING COMPOSTION 未知

    公开(公告)号：AU4345579A

    公开(公告)日：1979-08-02

    申请号：AU4345579

    申请日：1979-01-18

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： ASANO MAKOTO ,  KAWASHIMA SABURO ,  SUGIMOTO KENICHI ,  KOBAYASHI TADASHI

    IPC: B41M5/155 ,  C08G8/08 ,  C08G8/24 ,  C08K5/13 ,  C08L61/06 ,  C08L61/08 ,  B41M5/16

    Abstract: Disclosed is a color-developing composition for pressure-sensitive recording sheet material of the self-contained type comprising (A) 100 parts by weight of a copolymer obtained by reacting a p-alkylphenol having an alkyl moiety of from 1 to 12 carbon atoms and phenol with formaldehyde and (B) from 1 to 20 parts by weight of a hindered phenolic compound selected from phenols having an alkyl, alkylene or hydroxyl substituent radical in at least the 2- or 6-position, or both, of the benzene ring and derivatives thereof, the copolymer and the hindered phenolic compound being homogeneously dissolved in mutual solution. The hindered phenolic compound is either added to the starting materials for the preparation of the copolymer or, at the end of the copolymerization reaction, added to the resulting copolymer and dissolved homogeneously in mutual solution.

    39.
    发明专利
    未知

    公开(公告)号：DE3855276T2

    公开(公告)日：1996-09-19

    申请号：DE3855276

    申请日：1988-10-21

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10 ,  C08K7/04 ,  C08L79/08 ,  C08K7/02

    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 dicarboxylic anhydrides such as glutaric anhydride, 1,2-hexanedicarboxylic anhydride, phthalic anhydride and 3,4-benzophenonedicarboxylic anhydride. The molar ratio of aromatic diamine : tetracarboxylic dianhydride : dicarboxylic anhydride 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 and fibrous reinforcing materials such as yarn, roving, tow, fabrics, mats and felts of glass fiber, carbon fibers or aromatic polyamide fibers.

    40.
    发明专利
    未知

    公开(公告)号：DE3788937T2

    公开(公告)日：1994-07-14

    申请号：DE3788937

    申请日：1987-11-12

    Applicant: MITSUI TOATSU CHEMICALS

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

    IPC: C08G73/10

    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

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