-
公开(公告)号：DE69317197T2
公开(公告)日：1998-09-24
申请号：DE69317197
申请日：1993-04-21
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MORITA ATSUSHI , GOTOH YOSHIHISA , TAKAHASHI TOSHIAKI , ITO KAYAKO , OOCHI HIROYASU , KOBA TOMOHITO , SIMAMURA KATUNORI , TOMIMOTO HIROAKI , TAKIZAWA NOBUHIRO
Abstract: A polyimide resin composition comprising 50-95 parts by weight of a polyimide resin represented by general formula (1) and 50-5 parts by weight of a polyether-etherketone and having an enthalpy of crystallization of 0-6 cal/g after being heat-treated at 250-330 DEG C, wherein X represents a direct bond, hydrocarbylene, carbonyl, thio, etc.; Y1 to Y4 represent each hydrogen, lower alkyl, etc.; and R1 represents an aliphatic or aromatic group, etc. This composition can be heat-treated at a lower temperature in a shorter time and is excellent in dimensional stability and high-temperature properties and also in moldability and peeling resistance.
-
公开(公告)号：DE69317197D1
公开(公告)日：1998-04-09
申请号：DE69317197
申请日：1993-04-21
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MORITA ATSUSHI , GOTOH YOSHIHISA , TAKAHASHI TOSHIAKI , ITO KAYAKO , OOCHI HIROYASU , KOBA TOMOHITO , SIMAMURA KATUNORI , TOMIMOTO HIROAKI , TAKIZAWA NOBUHIRO
Abstract: A polyimide resin composition comprising 50-95 parts by weight of a polyimide resin represented by general formula (1) and 50-5 parts by weight of a polyether-etherketone and having an enthalpy of crystallization of 0-6 cal/g after being heat-treated at 250-330 DEG C, wherein X represents a direct bond, hydrocarbylene, carbonyl, thio, etc.; Y1 to Y4 represent each hydrogen, lower alkyl, etc.; and R1 represents an aliphatic or aromatic group, etc. This composition can be heat-treated at a lower temperature in a shorter time and is excellent in dimensional stability and high-temperature properties and also in moldability and peeling resistance.
-
公开(公告)号：EP0591551A4
公开(公告)日：1994-10-05
申请号：EP93909402
申请日：1993-04-21
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MORITA ATSUSHI , GOTOH YOSHIHISA , TAKAHASHI TOSHIAKI , ITO KAYAKO , OOCHI HIROYASU , KOBA TOMOHITO , SIMAMURA KATUNORI , TOMIMOTO HIROAKI , TAKIZAWA NOBUHIRO
Abstract: A polyimide resin composition comprising 50-95 parts by weight of a polyimide resin represented by general formula (1) and 50-5 parts by weight of a polyether-etherketone and having an enthalpy of crystallization of 0-6 cal/g after being heat-treated at 250-330 °C, wherein X represents a direct bond, hydrocarbylene, carbonyl, thio, etc.; Y1 to Y4 represent each hydrogen, lower alkyl, etc.; and R1 represents an aliphatic or aromatic group, etc. This composition can be heat-treated at a lower temperature in a shorter time and is excellent in dimensional stability and high-temperature properties and also in moldability and peeling resistance.
-
公开(公告)号：JPH09225954A
公开(公告)日：1997-09-02
申请号：JP3777296
申请日：1996-02-26
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOBA TOMOHITO , SHIMAMURA KATSUICHI , TAKIZAWA NOBUHIRO , YOSHIDA IKUNORI , SANO KOICHI
Abstract: PROBLEM TO BE SOLVED: To obtain a molded article having a good dispersibility of the filler and a superior strength and being free of a void, in a compression molding using a pellet obtained by melting and kneading a thermal plastic resin and the filler through an extruder. SOLUTION: By pressurizing at the softening point that a thermal plastic resin is defomated under pressure but a complete bonding between each of a pellet is not generated, air in the pellet is effectively eliminated, next, the thermal plastic resin and a filler are heated furthermore to the melting temperature then pressurized. In this manner, a good molded article not including air even if a compression molding uses a pellet is provided.
-
公开(公告)号：JPH069871A
公开(公告)日：1994-01-18
申请号：JP11992593
申请日：1993-05-21
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOBA TOMOHITO , SHIMAMURA KATSUICHI , TAKAHASHI TOSHIAKI , TAKIZAWA NOBUHIRO , TOMIMOTO HIROAKI
Abstract: PURPOSE:To provide a fiber-reinforced polyimide resin composition comprising a new polyimide resin, an aromatic polyetherketone and fibers and having heat resistance capable of being largely improved by its crystallization without deteriorating its surface smoothness, because the surface of a molded product is not roughened even when crystallized after the production of the molded product. CONSTITUTION:The composition comprises 99-50 pts.wt. of a resin composition comprising (A) 50-99wt.% of a polyimide resin having repeating units of the formula (X is direct bond, 1-10C divalent hydrocarbon, etc.; R is the tetravalent group of a >=2C aliphatic group, a monocyclic aromatic group, etc.), (B) 50-1wt.% of an aromatic polyetherketone, and (C) 1-50 pts.wt. of fibers (e.g. carbon fibers, glass fibers). The composition is usually prepared by a method comprising mixing the powder of the component A, the powder of component B and the component C with a mixer such as a Henschel mixer and subsequently kneading the mixture with an extruder, etc. The component A is preferably produced from an ether diamine such as bis[4-(3-aminophenoxy)phenyl]sulfide and a tetracarboxylic acid dianhydride such as pyromellitic dianhydride.
-
Patent Agency Ranking
公开(公告)号：JPH04345630A
公开(公告)日：1992-12-01
申请号：JP11836491
申请日：1991-05-23
Applicant: MITSUI TOATSU CHEMICALS
Inventor： NAKAKURA TOSHIYUKI , KOBA TOMOHITO , SHIMAMURA KATSUICHI , TAKIZAWA NOBUHIRO , TOMIMOTO HIROAKI
Abstract: PURPOSE:To markedly improve the wettability of a thermoplastic polyimide molding by subjecting it to corona discharge treatment. CONSTITUTION:A surface treatment process for improving the wettability of the surface of a thermoplastic polyimide molding by subjecting the molding to corona discharge treatment. An example of the thermoplastic polyimide resin used is a polyimide resin comprising repeating units of the formula (wherein X is a direct bond, a 1-10C bivalent hydrocarbon group, a hexafluorinated isopropylidene group, carbonyl, thio or sulfonyl; and R is a tetravalent group selected from among a 2C or higher aliphatic group, a cycloaliphatic group, a monocyclic aromatic group, a condensed polycyclic aromatic group and a noncondensed polycyclic aromatic group composed of aromatic groups bonded directly or through bridging members. The thermoplastic polyimide resin may be used alone or in the form of a mixture with other additive. Examples of these additives include reinforcing fibers such as glass and carbon fibers, calcium silicate and talc.
-
公开(公告)号：JPS58208244A
公开(公告)日：1983-12-03
申请号：JP9118582
申请日：1982-05-31
Applicant: MITSUI TOATSU CHEMICALS , MITSUI PETROCHEMICAL IND
Inventor： ONOBUSA MITSUO , MIYAGAWA HIROJI , TAKAHASHI SHIGERU , TSUDA TAKESHI , TAKIZAWA NOBUHIRO
Abstract: PURPOSE:To carry out the alkylation reaction of a phenol having hydrogen atom at o-position wth a saturated aliphatic alcohol, suppressing the decomposition of the alcohol, by feeding a specific amount of said phenol to the intermediate part of catalyst layer. CONSTITUTION:A phenol of formula (R0 is H or 1-4C hydrocarbon group; R1- R4 are H, 1-4C hydrocarbon group, phenyl, naphthyl, etc.) is alkylated with a saturated aliphatic alcohol (e.g. methanol) in vapor phase in the presence of a manganese catalyst. The above reaction is carried out by feeding 0.04-4 moles of a phenyl of formula (which may be the same as the starting phenol), based on 1 mole of the starting phenol, to the reactor through the intermediate feeding port positioned at the 1/4-3/4 of the whole length of the catalyst layer. EFFECT:The decomposition of the alcohol can be remarkably suppressed, and the amount of the alcohol utilizable effectively to the o-alkylation can be increased.
-
公开(公告)号：JPH09173439A
公开(公告)日：1997-07-08
申请号：JP33761695
申请日：1995-12-26
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MORITA ATSUSHI , KOBA TOMOHITO , KATAOKA TOSHIYUKI , FURUKAWA HIROYUKI , TAKIZAWA NOBUHIRO , SANO KOICHI
Abstract: PROBLEM TO BE SOLVED: To form a catheter having a strength and a large elasticity by letting a specific quantity of aluminum borate whiskers included in a thermoplastic polyimide. SOLUTION: Aluminum borate whiskers by 5-50 pts.wt. are included in 100 pts.wt. polyimide resin having repeated units expressed by the formula. When the quantity of a fiber reinforcement material is less than 5 pts.wt., sufficient elasticity is not provided. When it exceeds 50 pts.wt., fusion viscosity of composition is increased, and extrusion performance becomes bad. In the formula, X denotes a group selected from among a group comprising direct coupling sulfur, or the like Y1 , Y2 , Y3 , and Y4 are each hydrogen, a 1-6C low alkyl group, and R1 is a tetravalent group selected from among non-condensed polycyclic aromatic groups mutually coupled by 4-9C aliphatic groups, or the like. A catheter having a strength and a large elasticity can thus be formed.
-
公开(公告)号：JPH07316424A
公开(公告)日：1995-12-05
申请号：JP11245494
申请日：1994-05-26
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MORITA ATSUSHI , KOBA TOMOHITO , TAKAHASHI TOSHIAKI , SHIMAMURA SHIYOUJI , KAMIYA YOSHIYASU , TAKIZAWA NOBUHIRO
Abstract: PURPOSE:To prepare a polyimide resin compsn. which exhibits good sliding properties under high-load and high-speed conditions by incorporating a fiber reinforcement and a lubricating oil into a polyimide resin having a particular logarithmic viscosity number and particular repeating units. CONSTITUTION:1 to 80 pts.wt. fiber reinforcement (B) and 0.1 to 11 pts.wt. lubricant (C) are incorporated into 100 pts.wt. polyimide resin (A) of the formula I (X presents a direct bond, S, a C1 to C10 hydrocarbon group or the like, Y1 to Y4 represent each H, a C1 to C6 alkyl, an alkoxy, Cl, or Br and R1 represents an aliph. or arom. group) to prepare an oil-contg. polyimide resin compsn. for a sliding material. The component (A) is prepd. by reacting an ether diamine of the formula II with a tetracarboxylic acid dianhydride to conduct thermal or chemical imidization. The component (A) has a logarithmic viscosity number of 0.45 to 1dl/g. The component (B) is a fiber of carbon, glass, ceramic, boron or the like, and the component (C) is an oil having a weight loss on heating at 300 deg.C of not more than 10wt.%. A molded product prepd. from the compsn. may be heat-treated at 250 to 350 deg.C to further improve the sliding properties.
-
公开(公告)号：JPH09188813A
公开(公告)日：1997-07-22
申请号：JP218996
申请日：1996-01-10
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YOSHIDA IKUNORI , KATAOKA TOSHIYUKI , KOBA TOMOHITO , SHIMAMURA KATSUICHI , MORITA ATSUSHI , FURUKAWA HIROYUKI , TAKIZAWA NOBUHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a resin compsn. excellent in mechanical characteristics by compounding a crystalline polyimide resin having repeating units represented by a specific formula, a carbon black, a bisimide compd., and a polyaryl ether ketone resin. SOLUTION: A resin compsn. is prepd. by mixing 100 pts.wt. crystalline polyimide resin having repeating units represented by formulas I and III (wherein X1 is a direct bond, SO2 , etc.; R1 to R6 are each alkyl, halogen, etc.; Y1 is a group represented by formula II; and n is 0-4) with 0.2-200 pts.wt. at least two ingredients selected from among a carbon black having a crystallite size in the c-axis direction of 1-20nm, a bisimide compd. represented by formula IV or VI [wherein R7 is a 6-30C divalent arom. group; R8 is Cn H2n+1 (wherein n is 0-3), etc.; X2 is a group represented by formula V; X3 is a direct bond, an ether bond, etc.; Y3 is a group represented by formula W; and Y4 is a direct bond, etc.], and at least one polyaryl ether ketone resin selected from among resins having repeating units represented by formulas VIII to XI and then melt kneading the resultant mixture with an extruder.
-
-
-
-
-
-
-
-
-
Search Results
17
records
(took 0.025 seconds)
