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公开(公告)号：CA2093480A1
公开(公告)日：1993-10-08
申请号：CA2093480
申请日：1993-04-06
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMASHITA WATARU , SAKATA YOSHIHIRO , KATAOKA TOSHIYUKI , OKAWA YUICHI , OIKAWA HIDENKI , ASANUMA TADASHI , MATSUO MITSUNORI , ISHIDA TSUTOMU , YAMAGUCHI KEIZABURO , YAMAGUCHI AKIHIRO
IPC: C07C217/90 , C08G73/10 , H05K1/00 , H05K1/03 , C07C225/22 , C07C323/31
Abstract: This invention relates to fluorine containing polyimide, a novel aromatic diamine which has a perfluoroalkyl radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same. The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: such as the structural units of the formula Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same. The present invention can provide polyimide which has an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.
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公开(公告)号：DE69221956D1
公开(公告)日：1997-10-09
申请号：DE69221956
申请日：1992-06-09
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMASHITA WATARU , TAMAI SHOJI , YAMAGUCHI AKIHIRO
IPC: C08G73/10 , C09J179/08
Abstract: Amorphous polyimide powder which has recurring structural units of the formula ( I ): as a fundamental skeleton, is blocked at the polymer chain end with dicarboxylic anhydride represented by the formula ( II ) wherein Z is a divalent radical having from 6 to 27 carbon atoms and selected from the group consisting of a monoaromatic radical, condensed polyaromatic radical and noncondensed aromatic radical connected each other with a direct bond or a bridge member, and essentially has no reactive radical at the polymer chain end, preparation process of the amorphous polyimide powder, heat-resistant adhesive comprising the polyimide, and bonding method using the adhesive, are disclosed.
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公开(公告)号：DE69312549D1
公开(公告)日：1997-09-04
申请号：DE69312549
申请日：1993-04-07
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMASHITA WATARU , SAKATA YOSHIHIRO , KATAOKA TOSHIYUKI , OKAWA YUICHI , OIKAWA HIDEAKI , ASANUMA TADASHI , MATSUO MITSUNORI , ISHIDA TSUTOMU , YAMAGUCHI KEIZABURO , YAMAGUCHI AKIHIRO
IPC: C07C217/90 , C08G73/10 , H05K1/00 , H05K1/03
Abstract: This invention relates to fluorine containing polyimide, a novel aromatic diamine which has a perfluoroalkyl radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same. The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: such as the structural units of the formula Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same. The present invention can provide polyimide which has an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.
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公开(公告)号：EP0769512A3
公开(公告)日：1998-10-14
申请号：EP96116815
申请日：1996-10-18
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TAMAI SHOJI , MORI YUKIKO , GOTO KENICHI , WATANABE KATSUJI , KOHGO OSAMU , SHIMIZU KOTARO , KATAOKA TOSHIYUKI , KUROKI TAKASHI , YAMASHITA WATARU , MIZUTA HIDEKI , NAGATA TERUYUKI
CPC classification number: C08G73/1007 , C08G63/823 , C08G63/87 , C08G69/04 , C08G69/28 , C08G75/26
Abstract: The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.
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公开(公告)号：JPH0987516A
公开(公告)日：1997-03-31
申请号：JP34007895
申请日：1995-12-27
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YOSHIMURA TOMOMI , YAMASHITA WATARU , TAMAI MASAJI , YAMAGUCHI TERUHIRO
IPC: C07D403/10 , C07D209/48 , C08K5/3415 , C08L79/08
Abstract: PROBLEM TO BE SOLVED: To provide a polyimide resin compsn. which has a high rate of crystallization by comprising a polyimide having a repeating unit represented by a particular formula and a crystallization accelerator of a bismaleimide compd., an imide oligomer, or a bismaleimide mixture. SOLUTION: 4,4'-Bis(3-aminophenoxy)biphenyl is reacted with pyromellitic acid dianhydride to prepare a crystalline polyimide comprising a repeating unit represented by formula I. A crystalline polyimide in an amt. of 100 pts.wt. (hereinafter referred to as 'pts.') is mixed with at least one crystallization accelerator, in an amt. of l to 50 pts.wt., selected from among a bisimide compd. and the like represented by formula II (wherein X represents formula III; and Y1 represents formula IV), an imide oligomer represented by formula V (wherein (n) is 1 to 3), and a mixture of bisimide compds. represented by formulae VI and VII (wherein Z2 represents H, CH3 , C2 H5 or the like). This mixture is melt- kneaded by means of a melt mixer or the like at about 390 to 420 deg.C to prepare a polyimide resin compsn. for molding which can markedly shorten the cooling time for melt molding.
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Patent Agency Ranking
公开(公告)号：JPH07179757A
公开(公告)日：1995-07-18
申请号：JP17718294
申请日：1994-07-28
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TAMAI MASAJI , OKAWA YUICHI , SAKATA YOSHIHIRO , YAMASHITA WATARU , YAMAGUCHI TERUHIRO , YAMAGUCHI KEISABURO , OIKAWA HIDEAKI , MATSUO MITSUKI , ASANUMA TADASHI
Abstract: PURPOSE:To obtain a polyimide resin composition containing, e.g. a polyimide having a specified structure and a polyether pyridine having a specified structure and excellent in melt molding properties, heat resistance, chemical resistance, mechanical strength and cumulative fatigue properties. CONSTITUTION:This resin composition contains (A) 99.9 to 50 pts.wt. polyimide having a repeating a structural unit of formula I (X is direct bond, isopropylidene, thio, etc.; R is a 2 to 27C aliphatic, an alicyclic, a condensed aromatic polycycle, etc.) and (B) 0.1 to 50 pts.wt. polyimide having a structural unit of formula II (R1 is a tetravalent group of formula III or IV), a polyimide having a structural unit of formula V and/or a polyether pyridine having a repeating structural unit of formula VI (Y is a bivalent group such as p-phenyl, biphenyl, etc.).
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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
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公开(公告)号：JPH0931327A
公开(公告)日：1997-02-04
申请号：JP18154095
申请日：1995-07-18
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YOSHIMURA TOMOMI , YAMASHITA WATARU , TAMAI MASAJI , YAMAGUCHI TERUHIRO
IPC: C07D403/12 , C08K5/3415 , C08L79/08
Abstract: PROBLEM TO BE SOLVED: To obtain a crystallization accelerator which accelerates the crystallization of a crystalline polyimide by thermally or chemically imidating 4,4'-(4- aminophenoxy)biphenyl with phthalic anhydride. SOLUTION: A compound, 4,4'-(4-Aminophenoxy)biphenyl represented by formula I is thermally or chemically imidated with phthalic anhydride represented by formula II to obtain a bisimide represented by formula III. Although a crystallization accelerator comprising this bisimide is applicable to any crystalline polyimides, it is effective as a crystallization accelerator for especially a crystalline polyimide represented by formula IV. This accelerator can markedly accelerate the crystallization of a crystalline polyimide without detriment to its properties. When the accelerator is added to a crystalline polyimide and the obtained mixture is molten and injection-molded, the polyamide can crystallize in the mold during cooling.
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公开(公告)号：JPH08259924A
公开(公告)日：1996-10-08
申请号：JP6412195
申请日：1995-03-23
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMASHITA WATARU , TAMAI MASAJI , YAMAGUCHI TERUHIRO
IPC: C09J179/08 , C08G73/10
Abstract: PURPOSE: To obtain an adhesive which is highly heat resistant, enables bonding at a low temperature and low pressure, and also gives good bonding strength, by using a polyimide produced by a specified process and its precursor comprising a polyamic acid. CONSTITUTION: A heat-resistant adhesive comprising a polyimide obtained by reacting a diamine compound containing 0.10-0.005 mol of diaminosiloxane represented by formula II (wherein n is 0 to 7) for 1mol of an aromatic diamine represented by formula I [wherein X1 and X2 are each a direct bond O, S, CO, CH, C(CH2 )2 , C(CF3 )2 or SO2 ; and R1-4 , R'1-4 and R"1-4 are each H, halogen 1-3C alkyl, fluoroalkyl, alkoxy, fluoroalkoxy, phenyl, biphenyl, phenoxy, biphenoxy or nitrile] with an aromatic tetracarboxylic acid dianhydride represented by formula III (wherein Ar is a group selected from those of formula IV). A heat-resistant adhesive solution containing a polyamic acid, the precursor of the polyimide.
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公开(公告)号：JPH0853620A
公开(公告)日：1996-02-27
申请号：JP17780394
申请日：1994-07-29
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMASHITA WATARU , OKAWA YUICHI , OIKAWA HIDEAKI , ASANUMA TADASHI , TAMAI MASAJI , YAMAGUCHI TERUHIRO
IPC: C08J5/04 , C08J7/02 , C08K7/02 , C08L79/08 , D06M15/37 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/34 , D06M101/36 , D06M101/40
Abstract: PURPOSE:To obtain a polyimide resin composition excellent in mechanical properties, capable of retaining high mechanical properties even under high- temperature and high-humidity conditions and reduced in hygroscopicity and water absorption by mixing a polyimide of a specified composition with a fibrous reinforcement. CONSTITUTION:This composition is obtained by mixing a fibrous reinforcement (e.g. glass fiber) with a polyimide essentially consisting of at least one kind of repeating units each represented by formula I (wherein m and n are each 0 or 1; R is a group of any one of formulas II to V; R1 to R4 are each H, halogen, 1-8 C alkyl, aryl, alkenyl, aralkyl or 1-5 C alkoxy; R,5 to R7 are each H, 1-8C alkyl, aryl, alkenyl, aralkyl or the like; and Ar is a tetravalent group selected from among a 6-27C monocyclic aromatic group, a fused polycyclic aromatic group or a nonfused polycyclic aromatic group consisting of aromatic groups bonded with each other directly or through bridging members).
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