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公开(公告)号：JPS63314274A
公开(公告)日：1988-12-22
申请号：JP15177387
申请日：1987-06-17
Applicant: YOBEA RULON KOGYO KK , MITSUI TOATSU CHEMICALS
Inventor： YOSHIKAWA MASAO , OTA MASAHIRO
Abstract: PURPOSE:To obtain the title composition excellent in heat resistance, abrasion resistance and slidability, by mixing a specified thermoplastic polyimide resin with a cured phenolic resin product and a solid lubricant. CONSTITUTION:100pts.wt. thermoplastic polyimide resin (A) having repeating units of the formula (wherein X is a direct bond, a 1-10C hydrocarbon group, a lower alkyl, a lower alkoxy, Cl or Br, and Y is a tetravalent group selected from among a 2C or higher aliphatic group, a cycloaliphatic group, a monocyclic or condensed polycyclic aromatic group and a noncondensed polycyclic aromatic group composed of aromatic groups bonded to each other directly or through bridging members) is mixed with 3-50pts.wt. cured phenolic resin product (B) of an average particle diameter
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公开(公告)号：JPS63312353A
公开(公告)日：1988-12-20
申请号：JP14686987
申请日：1987-06-15
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OTA MASAHIRO , KAWASHIMA SABURO , TAMAI MASAJI , OIKAWA HIDEAKI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain the titled composition outstanding in heat resistance, chemical resistance, mechanical strength and molding processability, improved in esp. tensile strength, tensile elongation and impact resistance, by incorporating a polyphenylene sulfide with a specific polyetherimide. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of a polyphenylene sulfide constituted of recurring unit of formula III with (B) 1-100pts.wt. of a polyetherimide having recurring unit of formula I [X is of formula II; R is tetravalent group selected from >=2C aliphatic groups, alicyclic groups, monocyclic aromatic groups, condensed polycyclic aromatic groups and noncondensed polycyclic aromatic groups with aromatic group(s) mutually linked directly or through crosslinking member].
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公开(公告)号：JPS63304057A
公开(公告)日：1988-12-12
申请号：JP13897487
申请日：1987-06-04
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OTA MASAHIRO , KAWASHIMA SABURO , TAMAI MASAJI , OIKAWA HIDEAKI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain an aromatic polysulfone polymer composition having excellent chemical resistance, mechanical strength, heat-resistance and moldability, by compounding an aromatic polysulfone polymer with a specific amount of a specific polyether imide. CONSTITUTION:The objective polymer composition is produced by (1) compounding (A) 100pts.wt. of an aromatic polysulfone polymer, e.g. composed of recurring unit of formula I or formula II with (B) >=1pt.wt. and =5pts.wt. and =2C aliphatic group, cycloaliphatic group, etc.) and produced by the dehydrative cyclization of a polyamic acid produced by the reaction of an ether diamine of formula III (X is carbonyl or sulfonyl group) with one or more kinds of tetracarboxylic acid dianhydrides, (2) preliminarily kneading the mixture e.g. with Henschel mixer and (3) pulverizing the kneaded mixture.
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公开(公告)号：JPS63301256A
公开(公告)日：1988-12-08
申请号：JP13775687
申请日：1987-06-02
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OTA MASAHIRO , KAWASHIMA SABURO , TAMAI MASAJI , OIKAWA HIDEAKI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain a polyimide resin composition excellent in melt flow, good in moldability and excellent in heat resistance, strength, etc., by mixing a polyimide having specified repeating units with a specified amount of polyphenylene sulfide. CONSTITUTION:The title resin composition is obtained by mixing 99.9-50wt.% polyimide (A) having repeating units of formula I (wherein X is carbonyl or sulfonyl, and R is a tetravalent group selected from among a 2C or higher aliphatic group, a cycloaliphatic group, a monocyclic group, a condensed polycyclic aromatic group and a noncondensed polycyclic aromatic group composed of aromatic groups bonded to each other directly or through bridging members) is mixed with 0.1-50wt.% polyphenylene sulfide (B). The resin composition can be used for electronic devices, etc. Component A can be obtained by reacting an ether-diamine of formula II with a tetracarboxylic acid dianhydride and imidating the formed polyamic acid.
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公开(公告)号：JPS63211319A
公开(公告)日：1988-09-02
申请号：JP4001387
申请日：1987-02-25
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TAMAI MASAJI , KAWASHIMA SABURO , OTA MASAHIRO , OIKAWA HIDEAKI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain the titled yarn having high strength and high modulus of elasticity, obtainable by dry spinning and wet spinning method, comprising a polyimide having a specific pyromellitic imide unit as a repeating unit. CONSTITUTION:Yarn having a repeating unit shown by formula I. For example, first 4,4'-bis(3-aminophenoxy)biphenyl is reacted with pyromellitic anhydride in a solvent, preferably DMF, etc., preferably at
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Patent Agency Ranking
公开(公告)号：JPS63193924A
公开(公告)日：1988-08-11
申请号：JP2623687
申请日：1987-02-09
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMATANI NORIMASA , OTA MASAHIRO , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain the titled composition, having excellent toughness, heat and impact resistance, flexibility, etc., and capable of providing molded articles suitable as electrical and electronic parts, etc., by compression, injection molding methods, etc., by reacting a specific biphenylbismaleimide with a diamine compound. CONSTITUTION:The aimed composition obtained pulverizing and blending (A) N,N-bis(4-aminophenoxy)biphenylbismaleimide, expressed by formula I and prepared by subjecting 4,4-bis(4-aminophenoxy)biphenyl and maleic anhydride to condensation and dehydration reaction with (B) a diamine compound, expressed by formula II (R is formula III, etc.) [e.g. 1,3-bis(3-aminophenoxy) benzene, etc.] and obtained by condensing bisphenols with m-dinitrobenzene in, e.g. solid forms, and heat-treating the resultant blend at 70-220 deg.C.
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公开(公告)号：JPH0931170A
公开(公告)日：1997-02-04
申请号：JP18153895
申请日：1995-07-18
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOUGO OSAMU , OBUCHI SEIJI , MIYAMOTO MICHIHIKO , OTA MASAHIRO , TAKAHASHI AKIRA , KIKUCHI NOBUSADA
IPC: C08G63/06 , C08G63/78 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To industrially easily and economically obtain a high-molecular weight polyhydroxycarboxylic acid by the direct polycondensation through dehydration. SOLUTION: A process for producing a polyhydroxycarboxylic acid by the polycondensation through dehydration of hydroxylcarboxylic acids containing at least lactic acid in an organic solvent in the presence or absence of a catalyst, wherein a hydroxycarboxylic acid containing alcohols, contained as impurities in lactic acid and having a boiling point higher than that of the reaction solvent, in an amount of at most 0.3mol% in total based on the feedstock hydroxycarboxylic acid is used as the raw material to give a polyhydroxycarboxylic acid with an inherent viscosity of at least 0.3dl/g.
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公开(公告)号：JPH0920822A
公开(公告)日：1997-01-21
申请号：JP17084695
申请日：1995-07-06
Applicant: MITSUI TOATSU CHEMICALS
Inventor： GOTO KENICHI , MORI YUKIKO , KUROKI TAKASHI , OBUCHI SEIJI , OTA MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To produce an aromatic polycarbonate good in reproducibility of molecular weight by measuring the deviation of the flow rate from the set value and controlling the feeds of an aqueous solution containing an alkali(ne earth) metallic base of an aromatic dihydroxy compound and a halogenated carbonyl compound, determining the residual ratio, leading the residual ratio into a correction ratio and correcting the feed rate. SOLUTION: The deviation of the flow rate from the set value is measured to control the feeds of an aqueous solution containing an alkali(ne earth) metallic base of an aromatic dihydroxy compound and a halogenated carbonyl compound. The concentration of the alkali(ne earth) metallic base of the aromatic dihydroxy compound in the aqueous phase taken out of the first vessel is measured to determine the residual ratio (b) based on the concentration of the feed solution. A correction ratio (a) is derived therefrom according to the deviation from the reference value of the residual ratio (b) and multiplied by the set flow rate for the aqueous solution containing the alkali(ne earth) metallic base of the aromatic dihydroxy compound to occasionally correct the feed rate to afford a polycarbonate in which the correction ratio (a) is determined from the residual ratio (b) by formulas I to III [(x) is the amount of a catalyst (mol% based on the aromatic dihydroxy compound); (y) is the residence time (min) in the first vessel and satisfies formula IV [(y) is >=1; (x) is >=0.0005; (xy) is >=0.5].
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公开(公告)号：JPH093073A
公开(公告)日：1997-01-07
申请号：JP15127595
申请日：1995-06-19
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OBUCHI SEIJI , FUKUIRI YASUSHI , OTA MASAHIRO
IPC: C07D493/04
Abstract: PURPOSE: To produce the subject compound useful as an improving agent, etc., for the transparency of a polyolefin resin by reacting sorbitol which is a solid substance with 4-methylbenzaldehyde in the presence of a catalyst in a mixed solvent of cyclohexane with hexane. CONSTITUTION: Sorbitol which is a solid substance having
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公开(公告)号：JPH08169887A
公开(公告)日：1996-07-02
申请号：JP31443394
申请日：1994-12-19
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OBUCHI SEIJI , FUKUIRI YASUSHI , OTA MASAHIRO
IPC: C07D493/04 , C08K5/05 , C08K5/15 , C08K5/1575 , C08L23/12
Abstract: PURPOSE: To obtain a sorbitol-based transparentizing and nucleating agent for polypropylene excellent in thermal stability and further a polypropylene resin composition, emitting an extremely slight malodor in extruding or molding after adding thereof to the polypropylene and capable of simultaneously satisfying the transparency, malodor and safety. CONSTITUTION: This 1,3-2,4-di(4-methylbenzylidene)sorbitol has
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