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公开(公告)号：JPH08176251A
公开(公告)日：1996-07-09
申请号：JP32041894
申请日：1994-12-22
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOGA NOBUSHI , YOKODE SEIJI , INOUE HIROSHI , SAKAI MASAMI
Abstract: PURPOSE: To produce an integral-skin polyurethane foam which cures in a short time without causing swelling on demolding by pouring a reaction mixture contg. an arom. polyisocyanate, a high-molecular isocyanate-reactive compd., and a specific blowing agent into a mold and allowing the mixture to foam to a specified density. CONSTITUTION: A reaction mixture is prepd. by mixing an arom. polyisocyanate, a high-molecular isocyanate-reactive compd., and a blowing agent comprising a tert. amine (e.g. 1-isobutyl-2-methylimidazole) salt of an acid selected from among phosphoric acid and its derivatives having a mol.wt. of 98-1,150, boric acid and its esters having a mol.wt. of 61-146, and aliph. carboxylic acids having a mol.wt. of 46-300, and if necessary a crosslinker, a catalyst, another blowing agent, a foam stabilizer, and other additives. The mixture is poured into a mold and allowed to foam, giving an integral-skin polyurethane foam having a density of 0.3-0.8g/cm .
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公开(公告)号：JPH07292249A
公开(公告)日：1995-11-07
申请号：JP6137495
申请日：1995-03-20
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMATANI NORIMASA , KOGA NOBUSHI , BABA KENICHI
Abstract: PURPOSE:To obtain a resin composition excellent in heat resistance, moldability, mechanical strengths, etc., by mixing a polyimide resin comprising repeating units represented by a specified formula and aromatic polyamide fibers. CONSTITUTION:This composition is a polyimide resin composition comprising 100 pts.wt. polyimide resin comprising repeating units repre by the formula (wherein Y is a 1-10 C bivalent hydrocarbon, hexafluoroisopropylidene, carbonyl, thio, sulfinyl or oxide; and R is a tetravalent group selected from the group consisting of a 2C or higher aliphatic group, a cycloaliphatic group, a monocyclic aromatic group, a fused polycyclic aromatic group and a nonfused cyclic aromatic group composed of aromatic groups bonded to each other directly or through bridging members) and 5-100 pts.wt. aromatic polyamide fibers. Thin composition is a material having excellent moldability and mechanical strengths as well as heat resistance and being useful for electrical and electronic components, automotive components, precision machinery components, etc.
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公开(公告)号：JPH07278393A
公开(公告)日：1995-10-24
申请号：JP9086595
申请日：1995-04-17
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YAMATANI NORIMASA , KOGA NOBUSHI , BABA KENICHI
Abstract: PURPOSE:To obtain the subject composition, comprising a polyimide resin having a specific recurring unit and a fluororesin, excellent in sliding characteristics, moldable by injection, having a small friction coefficient and excellent abrasion resistance and useful for various bearing materials, piston rings, etc. CONSTITUTION:This composition comprises 100 pts.wt. polyimide resin having a recurring unit expressed by formula I [Y is S or C(CH3)2; R is a >=2C tetravalent group such as an aliphatic, a cycloaliphatic, a monocyclic aromatic or a condensed polycyclic aromatic group] and 5-100 pts.wt. fluororesin. Furthermore, the polyimide resin is obtained by reacting an ether-diamine expressed by formula II with a tetracarboxylic dianhydride expressed by formula III.
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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：JPH06322127A
公开(公告)日：1994-11-22
申请号：JP11132493
申请日：1993-05-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATAOKA TOSHIYUKI , KOGA NOBUSHI , OIKAWA HIDEAKI , ASANUMA TADASHI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain the title resin which is useful in parts for electric or electronic appliances because it is melt-moldable and shows excellent heat resistance, dimensional stability and mechanical properties by polycondensation reaction between a specific diamine and an aromatic tricarboxylic monoacid halide under specific conditions. CONSTITUTION:The polycondensation reaction between 1,4-bis[4-(4-amino- phenoxy)-alpha,alpha-dimethylbenzyl]benzene and/or 1,3-bis[4-(4-aminophenoxy)-alpha,alpha- dimethylbenzyl]benzene of formula I and an aromatic tricarboxylic monoacid halide is carried out in the presence of a dehydrohalogenating agent such as triethylamine in an organic solvent such as DMF at a temperature lower than 60 deg.C to give the objective resin of formula II (X is aromatic condensed polycyclic ring group of 14 or less carbon atoms; n is 1 to 1,000). 100 pts.wt. of the resin and 5 to 100 pts.wt. of a fiber-reinforcing agent are used to give an aromatic polyamide-imide resin composition.
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Patent Agency Ranking
公开(公告)号：JPH06322125A
公开(公告)日：1994-11-22
申请号：JP11132293
申请日：1993-05-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATAOKA TOSHIYUKI , KOGA NOBUSHI , OIKAWA HIDEAKI , ASANUMA TADASHI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain the title resin which is useful in parts for electric or electronic appliances because it is melt-moldable and shows excellent heat resistance, dimensional stability and mechanical properties by polycondensation reaction between a specific bis(aminophenoxy)benzene and an aromatic tricarboxylic monoacid halide under specific conditions. CONSTITUTION:The polycondensation reaction between 1,4-bis(4-aminophenoxy) benzene and/or 1,4-bis(3-aminophenoxy)benzene and/or 1,3-bis(4-aminophenoxy) benzene and/or 1,3-bis(3-aminophenoxy)benzene of formula I and an aromatic tricarboxylic monoacid halide is carried out in the presence of a dehydrohalogenating agent such as triethylamine in an organic solvent such as DMF at a temperature lower than 60 deg.C to give the objective resin of formula II (X is aromatic condensed polycyclic ring group of 14 or less carbon atoms; n is 1 to 1,000). 100 pts.wt. of the resin and 5 to 100 pts.wt. of a fiber-reinforcing agent are used to give an aromatic polyamide-imide resin composition.
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公开(公告)号：JPH06322111A
公开(公告)日：1994-11-22
申请号：JP11132193
申请日：1993-05-13
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATAOKA TOSHIYUKI , KOGA NOBUSHI , OIKAWA HIDEAKI , ASANUMA TADASHI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To provide a polyamide resin having a combination of inherent heat resistance with excellent processability and low water absorptivity and good in mechanical properties and dimensional stability, containing a specific bis[(aminophenoxy)benzoyl]diphenyl ether. CONSTITUTION:The objective aromatic polyamide of formula I (X is
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公开(公告)号：JPH05170900A
公开(公告)日：1993-07-09
申请号：JP35431791
申请日：1991-12-20
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KATAOKA TOSHIYUKI , KOGA NOBUSHI , OIKAWA HIDEAKI , ASANUMA TADASHI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To obtain an aromatic polyamide resin having excellent heat resistance and processability and capable of being melt molded by thje polycondensation of a specific diamine and an aromatic dicarboxylic acid dihalide in the presence of a dehydrohalogenating agent. CONSTITUTION:Bis[4-(4-aminophenoxy)phenyl] sulfone and/or bis[4-(3- aminophenoxy)phenyl]sulfone of formula I, as a diamine component, and an aromatic dicarboxylic acid dihalide (e.g. terephthaloyl chloride) are subjected to polycondensation reaction at 60 deg.C or lower in an organic solvent in the presence of a dehydrohalogenation agent (e.g. triethylamine). Thus, an aromatic polyamide of formula II[wherein X is an aromatic group having fused rings or formula III (wherein Y is a direct bond, O, S, SO2, etc.; R is 1-4C alkyl, alkoxy, etc.; a is 0, 1 or 2 and b is 0 or 1-4); and n is 1-1000] is obtained. The obtained aromatic polyamide is useful as a raw material for spacecraft and aircraft equipment and fibers with a high heat resistance.
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公开(公告)号：JPH0525885B2
公开(公告)日：1993-04-14
申请号：JP33525490
申请日：1990-11-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OOBA MASAYUKI , TSUBOI HIKOTADA , KOGA NOBUSHI
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公开(公告)号：JPH0586186A
公开(公告)日：1993-04-06
申请号：JP24744791
申请日：1991-09-26
Applicant: MITSUI TOATSU CHEMICALS
Inventor： OIKAWA HIDEAKI , OKAWA YUICHI , KOGA NOBUSHI , KATAOKA TOSHIYUKI , YAMAGUCHI TERUHIRO
Abstract: PURPOSE:To rationalize the manufacturing process and suppress the side reaction to thereby obtain high-quality polyethersulfone by using 1,3-dimethyl-2- imidazolidinone as polymerization solvent in the polycondensation of a bisphenol having a specified structure and 4,4'-dichlorodiphenyl sulfone. CONSTITUTION:A polyethersulfone is produced by the polycondensation of a bisphenol of formula I (wherein Y is a direct linkage, -SO2-, -C/(CH2)2-or-O-) and 4-4'-dichlorodiphenyl sulfone of formula II, by using 1,3-dimethyl-2- imidazolidinone of formula III as the polymerization solvent.
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