公开(公告)号：JPH0632899A

公开(公告)日：1994-02-08

申请号：JP18491192

申请日：1992-07-13

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SAKATA YOSHIHIRO ,  OIKAWA HIDEAKI ,  OKAWA YUICHI ,  YAMASHITA WATARU ,  ASANUMA TADASHI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To produce a colorless and transparent polyimide excellent in thermal stability by reacting a specified fluorine-containing tetracarboxylic acid dianhydride with 4,4'-bis(3-aminophenoxy)diphenyl and an aromatic monoamine. CONSTITUTION:With 1mol 2,2-bis(3,4-dicarboxyphenyl)-1,1,1,3,3,3-hexafluoropropane dianhydride as a tetracarboxylic acid dianhydride represented byformula I, 0.9 to 1.0mol diamine compound [e.g. 4,4'-bis(3-aminophenoxy)diphenylsulfone] represented by formula II [X is SO2, C(CH3)2 or C(CF3)2] and 0.001 to 1.0mol aromatic monoamine expressed by the formula Z-NH2 (Z is a 6 to 15Cmonocyclic aromatic group, a condensed polycyclic aromatic group, etc.) are reacted. Thereby, the objective colorless and transparent polyimide having abasic skeleton composed of a repeating structural unit of formula III, blockedwith the compound of Z-NH2 and excellent in thermal stability can be produced.

公开(公告)号：JPH0625412A

公开(公告)日：1994-02-01

申请号：JP18090792

申请日：1992-07-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMASHITA WATARU ,  OKAWA YUICHI ,  OIKAWA HIDEAKI ,  ASANUMA TADASHI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain a thermoplastic polyimide excellent in heat resistance and moldability by copolymerizing specific monomers. CONSTITUTION:The polyimide has a structural repeating unit represented by formula I (wherein R is a tetravalent group selected from among a 2-27C aliphatic group, an alicyclic group, a monocyclic aromatic group, a condensed aromatic group, and a noncondensed polycyclic aromatic group consisting of aromatic groups bonded together directly or through a crosslinking member). It is obtained preferably by reacting the aromatic diamine represented by formula II mainly with a tetracarboxylic dianhydride represented by formula III and thermally or chemically imidizing the resulting poly(amic acid).

公开(公告)号：JPH05331282A

公开(公告)日：1993-12-14

申请号：JP13896292

申请日：1992-05-29

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMASHITA WATARU ,  KOGA NOBUSHI ,  OKAWA YUICHI ,  OIKAWA HIDEAKI ,  ASANUMA TADASHI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain a liquid crystalline polyimide having low dielectric constant, excellent heat-resistance and processability and useful for electric and electronic parts, etc., by imidating a polyamic acid produced by the reaction of a specific aromatic diamine with a specific tetracarboxylic acid dianhydride. CONSTITUTION:The polyimide consisting of the recurring structural unit of formula III and having a logarithmic viscosity of 0.01-3.0dl/g can be produced by reacting an aromatic diamine composed mainly of 1,3-bis[4-(4-amino-6- trifluoromethylphenoxy)-alpha,alpha-dimethylbenzyl]benzene of formula I with a tetracarboxylic acid dianhydride expressed mainly by formula II (R is 2-27C tetravelent group such as aliphatic, cycloaliphatic, monocyclic aromatic and condensed polycyclic aromatic group) and thermally or chemically imidating the obtained polyamic acid.

公开(公告)号：JPH05320339A

公开(公告)日：1993-12-03

申请号：JP12333692

申请日：1992-05-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMASHITA WATARU ,  OIKAWA HIDEAKI ,  ASANUMA TADASHI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10 ,  C08J5/18

Abstract: PURPOSE:To obtain a polyamide having excellent thermal stability, especially stability to thermal-oxidative stability and improved moldability and processability by reacting a specific diaminobenzene with a specific tetracarboxylic acid anhydride in the presence of an aromatic dicarboxylic acid anhydride. CONSTITUTION:1mol diaminobenzene of formula I (R is H, 1-3C alkyl, etc.) (e.g. p-phenylenediamine) is reacted with 0.8-1 mol tetracarboxylic acid anhydride of formula II (C is CO, 0, etc.) [e.g. 4,4'-bis (3,4-dicarboxyphenoxy) biphenyl dianhydride] in the presence of 0.3-3 times 2Xm mol aromatic dicarboxylic acid anhydride of formula III (Z is bifunctional group such as 1-6C monocyclic aromatic group or condensed polycyclic aromatic group) (preferably phthalic anhydride) when difference in the number of mols between the compound of formula I and the compound of formula II is m to give the objective polymer having a repeating unit of formula IV, containing polymer ends hindered with the compound of formula III.

公开(公告)号：JPH0598002A

公开(公告)日：1993-04-20

申请号：JP26007791

申请日：1991-10-08

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMASHITA WATARU ,  OIKAWA HIDEAKI ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain a polyimide having excellent properties, low dielectric properties and good moldability by imidating a polyamic acid which is a reaction product of an aromatic diamine compound with a tetracarboxylic acid dianhydride. CONSTITUTION:An aromatic diamine compound of the formula H2N-X-NH2 is reacted with a tetracarboxylic acid dianhydride mainly represented by formula I in an organic solvent. The obtained polyamic acid is thermally or chemically imidated to obtain the purpose polyimide. This is a lowly dielectric polyimide comprising structural units of formula II (wherein X is a bivalent group selected between a 12-27 C condensed polycyclic aromatic group containing at least one ether or thioether bond and a noncondensed polycyclic aromatic group composed of aromatic groups bonded together directly or through bridging members; R is a tetravalent group selected from among a 2-27 C aliphatic group, a cycloaliphatic group, a monocyclic aromatic group, a condensed polycyclic aromatic group, etc.).

公开(公告)号：JPH09188812A

公开(公告)日：1997-07-22

申请号：JP290896

申请日：1996-01-11

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YOSHIMURA TOMOMI ,  YAMASHITA WATARU ,  OTA MASAHIRO

IPC: C08K3/04 ,  C08K5/3415 ,  C08L79/08

Abstract: PROBLEM TO BE SOLVED: To provide a crystallization accelerator for a crystalline polyimide by mixing at least one compd. having a bisimide structure represented by a specific formula with a carbon powder. SOLUTION: A bisimide compd. represented by formula l or III (wherein R1 is a 630C divalent arom. group; X is a group represented by formula II; X1 is a direct bond, an ether bond, etc.; R2 is Cn H2n+1 or a 6-30C monovalent arom. group; Y is a group represented by formula IV; and Y1 is a direct bond, an ether bond, etc.) is obtd. by imidizing 1 equivalent of a diamine (e.g. diaminodiphenyl ether) with about 2-2.5 equivalents of a dicarboxylic anhydride (e.g. phthalic anhydride) in an org. solvent at about 25 deg.C or lower. A crystallization accelerator for a crystalline polyimide is obtd. by mixing the bisimide compd. with a carbon powder (e.g. carbon black) in a wt. ratio of (1:9)-(9:1). A polyimide resin compsn. is prepd. by mixing and melt kneading 100 pts.wt. crystalline polyimide with 1-50 pts.wt. above accelerator and, if necessary, up to 70 pts.wt. reinforcement (e.g. carbon fibers) with an extruder, etc.

公开(公告)号：JPH08231717A

公开(公告)日：1996-09-10

申请号：JP3713795

申请日：1995-02-24

Applicant: MITSUI TOATSU CHEMICALS

Inventor： IWAMORI AKIRA ,  MIYASHITA TAKEHIRO ,  FUKUDA SHIN ,  ASHIDA YOSHINORI ,  FUKUDA NOBUHIRO ,  TAMAI MASAJI ,  YAMASHITA WATARU ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10 ,  C23C14/20 ,  H05K1/03

Abstract: PURPOSE: To obtain a flexible circuit substrate material, comprising a thermal oxidation-resistant polyimide film and a metallic thin film, excellent in high- temperature durability in adhesion of the film to the thin film and further flexibility, etc., and useful as semiconductor IC chips, etc. CONSTITUTION: This flexible printed circuit substrate comprises (A) a thermal oxidation-resistant polyimide film, comprising preferably (i) an aromatic diamine and (ii) an aromatic acid dianhydride and having carbonyl and an ether in the chemical structure and (B) a metallic thin film having preferably 10-3000nm, more preferably 100-500nm thickness. Furthermore, the thin film of the component (B) is preferably a copper film and a copper layer is preferably formed on at least one surface of the film of the component (A) preferably by a sputtering method. The component (A) preferably has a recurring unit of formula I (X and Y are each 0 or CO; X is not equal to Y), preferably e.g. a recurring unit of formula II.

公开(公告)号：JPH08199150A

公开(公告)日：1996-08-06

申请号：JP971895

申请日：1995-01-25

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMASHITA WATARU ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C09J179/08 ,  C08G73/10

Abstract: PURPOSE: To obtain a heat-resistant adhesive suitable as an adhesive for a high-performance material useful in the field of electronics, aerospace devices, transportation devices, etc., having excellent shelf stability, heat resistance, bond strength, bondable even at low temperature and under low pressure, comprising a specific polyimide. CONSTITUTION: This heat-resistant adhesive comprises a polyimide obtained by reacting (A) a diamine mixture composed of 1mol compound of formula I [R1 to R4 are each H, a halogen, OH, NO2 , carboxyl, sulfonic group, a 1-3C alkyl, a fluoroalkyl, a (fluoro)alkoxy, (bi)phenyl group, (bi)phenoxy or CN] and 0.10 0.005mol compound of formula II ((n) is 0-7) with (B) a compound of formula III (Ar is benzo-1,2,4,5-tetrayl, naphthalene-2,3,6,7-tetrayl, bisphenyl-3,3',4,4'-tetrayl, etc.). The amount of the component A used is 0.8-1.2mol based on 1mol of the component B.

公开(公告)号：JPH08106096A

公开(公告)日：1996-04-23

申请号：JP24311994

申请日：1994-10-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  OKAWA YUICHI ,  YAMASHITA WATARU ,  YAMAGUCHI TERUHIRO

IPC: G02F1/1337 ,  C08G73/10

Abstract: PURPOSE: To provide a liquid crystal oriented film with which the seizing can be reduced and a good orientational property of a liquid crystal can be obtained by using a polyamide having a specified structural unit as the major component of the oriented film. CONSTITUTION: This liquid crystal oriented film contains a polyamide having a structural unit represented by the formula as its major component. In this formula, each of X and Y is a hydrogen atom, alkyl group having 1 to 3 carbon atoms, fluorine atom, chlorine atom or trifluoromethyl group and X and Y are the same or different, wherein the position of each of these substituents X and Y may be an ortho or meta position. To improve the adhesion of the oriented film to a substrate, an amino silicone or diamino silicone compound can be added to this oriented film. The oriented film is provided on the substrate by coating the substrate with a 0.1 to 30wt.% polyamide solution that is prepared by dissolving the polyamide in a solvent such as diglyme, butyl cellosolve, ethyl 'Carbitol(R)', etc., through using a coating method such as spraying, printing, etc., to form a coating film.

公开(公告)号：JPH08100122A

公开(公告)日：1996-04-16

申请号：JP18401295

申请日：1995-07-20

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAKUMA HIROSUKE ,  KIYONO KAZUHIRO ,  MISAWA TSUTAYOSHI ,  TAMAI MASAJI ,  YAMASHITA WATARU

IPC: G02B5/20 ,  C08L79/08 ,  G02B5/22 ,  G02F1/1335

Abstract: PURPOSE: To obtain the subject composition having high heat resistance and excellent transparent colorlessness and useful for an optical filter to effectively cut visible light and near infrared light by compounding a polyimide resin containing perfluoroalkyl groups with a specific coloring matter. CONSTITUTION: This composition is composed of (A) a polyimide resin preferably consisting of a recurring unit of formula I (A is a tetracarboxylic acid residue; B is a diamine residue; X and Y are each a perfluoroalkyl; (l) is an integer of 0-6; (m) is an integer of 0-4: l+m=1-10), e.g. a polyimide resin of formula II and (B) at least one of a coloring matter having an absorption band in a visible region and/or a near infrared region (preferably, a coloring matter selected from anthraquinone pigments, azo pigments, qulnophthalone pigments and phthalocyanine pigments) soluble in the component A. Further, the component B is preferably 1-50wt.% based on the component A. The perfluoroalkyl is preferably trifluoromethyl.