公开(公告)号：JPS6248782A

公开(公告)日：1987-03-03

申请号：JP18661085

申请日：1985-08-27

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OOTA MASAHIRO ,  KAWASHIMA SABURO ,  SONOBE YOSHIO ,  TAMAI MASAJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10 ,  C09J179/08

Abstract: PURPOSE:A heat-resistant adhesive, consisting of a polyimide having repeating units of a specific structure and inherent viscosity within a specific range, having improved heat resistance and adhesive force, soluble in low-boiling solvents, having good operability and useful for bonding electrical and electronic apparatus, etc. CONSTITUTION:An adhesive, consisting of a polyimide having repeating units expressed by the formula and having 0.05-1.5dl/g inherent viscosity (measured by using a solution in N,N-dimethylacetamide in 0.5g/100ml solvent concentration at 35 deg.C) and obtained by reacting, e.g. 2,2-bis[4-(3-aminophenoxy) phenyl]propane with 3,3',4,4'-benzophenonetetracarboxylic acid dianhydride to form a polyamic acid and dehydrocylcizing the resultant polyamic acid. The above-mentioned adhesive is preferably used by dissolving in an aliphatic halogenated hydrocarbon.

公开(公告)号：JPS61197545A

公开(公告)日：1986-09-01

申请号：JP3522885

申请日：1985-02-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMAGUCHI KEISABURO ,  YOSHIKAWA YUKIHIRO ,  TAMAI MASAJI ,  SUGIMOTO KENICHI ,  TANABE YOSHIMITSU ,  YAMAGUCHI TERUHIRO

IPC: C07C205/38 ,  B01J23/04 ,  B01J27/232 ,  B01J31/02 ,  C07B61/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/14

Abstract: PURPOSE:To obtain the titled compound useful as a raw material for agricultural chemicals and drugs from inexpensive raw materials mildly and easily in high purity and in high yield, by reacting meta-nitrophenol with meta- dinitrobenzene in the presence of a base in an aprotic polar solvent. CONSTITUTION:Meta-nitrophenol is reacted with meta-dinitrobenzene in the presence of a base (e.g., alkali metal carbonate, alkali metal hydrogencarbonate, etc.) in an aprotic polar solvent (e.g., formamide, N-methylformamide, N,N- dimethylformamide, etc.) to give 3,3'-dinitrodiphenyl ether. This method has high conversion ratio to the aimed substance and high selectivity, a small amount of by-products such as tar, etc., consequently the aimed substance is easily purified.

公开(公告)号：JPS61195130A

公开(公告)日：1986-08-29

申请号：JP3531085

申请日：1985-02-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  KAWASHIMA SABURO ,  SONOBE YOSHIO ,  OOTA MASAHIRO ,  OIKAWA HIDEAKI ,  YAMAGUCHI TERUHIRO

IPC: C08L79/08 ,  B29C41/12 ,  B29K79/00 ,  B29L7/00 ,  C08G73/00 ,  C08G73/10 ,  C08J5/18

Abstract: PURPOSE:To obtain the titled product having improved heat resistance, electric characteristics and mechanical characteristics in good film-forming properties, by adding an amide polar solvent to an ether solvent solution containing an aromatic polyamic acid having a specific viscosity, to give a raw material solution. CONSTITUTION:Firstly, (B) 1-20pts.wt. amide-based polar solvent (preferably N-methyl-2-pyrrolidone, etc.) is added to (A) 100pts.wt. ether-based solvent solution containing 5-50wt% aromatic polyamic acid having 0.1dl/g (measured in N,N-dimethylacetamide solvent at 0.5g/100ml solvent at 35 deg.C) logarithmic viscosity. Then, the solution is cast into a substrate, heated, so the solvent is removed and a dehydration reaction takes place, to give the aimed product. The component A is preferably obtianed by reacting an acid anhydride component such as pyromellitic dianhyride, etc., with a diamine component such as m-phenyl-diamine, etc., in an ether solvent.

公开(公告)号：JPS61194051A

公开(公告)日：1986-08-28

申请号：JP3256985

申请日：1985-02-22

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMAGUCHI KEISABURO ,  YOSHIKAWA YUKIHIRO ,  TAMAI MASAJI ,  SUGIMOTO KENICHI ,  TANABE YOSHIMITSU ,  YAMAGUCHI TERUHIRO

IPC: C07C205/38 ,  C07C67/00 ,  C07C201/00

Abstract: PURPOSE:To obtain the titled substance useful as an intermediate for a diamine which is a raw material of agricultural chemicals, pharmaceuticals, polyamides, etc., in high yield, at a low cost, by the self-condensation reaction of m- dinitrobenzene in an aprotic polar solvent in the presence of a nitrous acid salt. CONSTITUTION:The titled substance can be produced by the self-condensation reaction of m-dinitrobenzene in an aprotic polar solvent (preferably 1,3- dimethyl-2-imidazolidinone) in the presence of 0.1-2mol (based on 1mol of the raw material) of a nitrous acid salt (e.g. potassium nitrite, calcium nitrite, etc.) at 140-200 deg.C. A copper compound or a phase-transfer catalyst such as crown ether, quaternary ammonium salt, etc., may be used as the catalyst. EFFECT:The process is economical because the raw material is available at a low cost and the conversion and selectivity to the objective compound is high. The product can be purified easily.

公开(公告)号：JPS61143479A

公开(公告)日：1986-07-01

申请号：JP26522184

申请日：1984-12-18

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  KAWASHIMA SABURO ,  SONOBE YOSHIO ,  OOTA MASAHIRO ,  YAMAGUCHI TERUHIRO

IPC: C08G73/00 ,  C08G65/40 ,  C08G73/10 ,  C09J179/08

Abstract: PURPOSE:To provide the titled adhesive composed of a specific polyether-imide resin, exhibiting strong adhesivity without lowering the heat-resistance, and capable of keeping the high adhesivity even at a high temperature. CONSTITUTION:The polyether-imide resin containing the recurring unit of formula is used as an adhesive in the form of film or powder.

公开(公告)号：JPS61143477A

公开(公告)日：1986-07-01

申请号：JP26521984

申请日：1984-12-18

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  KAWASHIMA SABURO ,  SONOBE YOSHIO ,  OOTA MASAHIRO ,  YAMAGUCHI TERUHIRO

IPC: C08G73/00 ,  C08G65/40 ,  C08G73/10 ,  C09J179/08

Abstract: PURPOSE:To provide a heat-resistant adhesive consisting of polyamic acid and polyimic acid having specific recurring units, and capable of keeping the heat- resistance and adhesivity even at a high temperature. CONSTITUTION:The objective adhesive is composed of a polymer having the recurring unit of formula I [Y is group of formula II or III; R is >=3C (cyclo) aliphatic group, (condensed polycyclic) aromatic group, or mutually connected non-condensed polycyclic aromatic groups]. The polymer wherein Y is group of formula II can be prepared by reacting (A) 1,3-bis(3-aminophenoxy)benzene with (B) the compound of formula IV (e.g. 3,3',4,4'-benzophenonetetracarboxylic acid dianhydride) in an organic solvent [e.g. bis(2-methoxyethyl) ether] preferably at

公开(公告)号：JPH09302097A

公开(公告)日：1997-11-25

申请号：JP12138696

申请日：1996-05-16

Applicant: MITSUI TOATSU CHEMICALS

Inventor： NAKAJIMA JUN ,  KUWANO FUMIAKI ,  OKADA KAZUNARI ,  TAMAI MASAJI

IPC: C08J3/14 ,  C08G73/10

Abstract: PROBLEM TO BE SOLVED: To provide a polyimide powder by bringing a polyimide solution comprising a polyimide having structural units represented by a specific formula and a phenolic solvent into contact with a poor solvent for the polyimide and separating the crystals thus deposited. SOLUTION: A diamine, such as 4,4'-bis(3-aminophenoxy)biphenyl, and a tetracarboxylic acid anhydride, such as pyromellitic acid dianhydride and biphenyltetracarboxylic acid dianhydride, are added to a phenolic solvent, such as m-cresol, and the mixture is heated under stirring for a predetemined time. After completion of the reaction, the reaction solution is maintained at a temperature above approximately 50 deg.C and below the boiling point of a poor solvent, such as toluene, and the poor solvent is added thereto dropwise in an amount of not less than about 10 times that of the polymer powder and at a rate of addition of not more than 6 times the theoretical yield of the polymer powder per hour. The thus-deposited crystalline powder of a polyimide having structural units of formula I (wherein X is formula II; R1 to R3 are each H, a lower alkyl, phenyl, biphenyl, etc.; Y is formula III) is separated by filtration under pressure and dried in an atmosphere of nitrogen to obtain a polyimide powder.

公开(公告)号：JPH09157452A

公开(公告)日：1997-06-17

申请号：JP32277595

申请日：1995-12-12

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OKADA KAZUNARI ,  NAKAJIMA JUN ,  TAMAI MASAJI

IPC: C08K5/053 ,  C08K5/05 ,  C08K5/15 ,  C08K5/1575 ,  C08K5/34 ,  C08K5/3445 ,  C08L23/02 ,  C08L23/12 ,  C08L23/16

Abstract: PROBLEM TO BE SOLVED: To provide a polyolefin resin composition produced by adding a sorbitol-based clearing nucleation agent and a hydantoin compound to a polyolefin resin, having excellent transparency, emitting little odor and useful for food-packaging, etc. SOLUTION: This composition contains (A) 100 pts.wt. of a polyolefin resin, (B) 0.01-2 pts.wt. of a sorbitol-based clearing nucleation agent consisting of a sorbitol derivative of preferably the formula I (R and R are each H, a 1-4C saturated aliphatic alkyl, a branched alkyl or a halogen; (m) and (n) are each 1-5) and (C) 0.001-2.0 pts.wt. of a hydantoin compound of preferably the formula II (R and R are each H, an alkyl, an aryl or a cycloalkyl), e.g. hydantoin. The component B is e.g. 1.3,2.4-di-(methylbenzylidene)sorbitol and the composition may further be incorporated with an additive such as antioxidant.

公开(公告)号：JPH09157393A

公开(公告)日：1997-06-17

申请号：JP8113196

申请日：1996-04-03

Applicant: MITSUI TOATSU CHEMICALS

Inventor： SHIBUYA ATSUSHI ,  OKAWA YUICHI ,  TAMAI MASAJI ,  OTA MASAHIRO ,  YAMAGUCHI TERUHIRO

IPC: C08L27/12 ,  C08G73/14 ,  C08L79/08 ,  C08L87/00 ,  D01F6/74

Abstract: PROBLEM TO BE SOLVED: To obtain a liq.-crystalline polyamide-imide copolymer excellent in heat resistance, mechanical properties, processibility, thermotropic liq.-crystalline properties, resistance to water absorption. chemical resistance, etc., by selecting a specific polyamide-imide copolymer. SOLUTION: This liq.-crystalline polyamide-imide copolymer comprises 5-95mol% repeating structural units represented by formula I and 95-5mol% repeating structural units represented by formula II. The molecular ends of the copolymer may be blocked with an arom. dicarboxylic anhydride represented by formula I or IV (wherein Y and Z are each a 6-15C monocyclic arom. group, a condensed polycyclic arom. group, or a noncondensed polycyclic arom. group; and X a halogen) or an arom. monocarboxylic anhydride and/or an arom. monoamide represented by the formula: V-NH2 (wherein V is the same as Y or Z). The copolymer is used for a sliding member, a heat-resistant fiber, a molding, or a film.

公开(公告)号：JPH09104754A

公开(公告)日：1997-04-22

申请号：JP26271095

申请日：1995-10-11

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  OIKAWA HIDEAKI ,  OKADA KAZUNARI ,  NAKAJIMA JUN

IPC: C08G73/10

Abstract: PROBLEM TO BE SOLVED: To obtain a thermosetting polyimide superior in heat resistance, processibility, and mechanical characteristics to a thermoplastic polyimide by selecting a polyimide having a specific backbone and norbornene structures at the molecular ends. SOLUTION: This thermosetting polymidie has repeating structural units, represented by formula I (wherein P1 is a divalent group represented by formula II or III; S1 is at least one kind of a monovalent group represented by formula IV or V; m is an integer of 100-1; n is an integer of 0-99, provided m+n