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公开(公告)号：JPH01143886A
公开(公告)日：1989-06-06
申请号：JP30179987
申请日：1987-11-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： YAMADA YOSHIO , SHIRAISHI MINORU
Abstract: PURPOSE:To obtain the title polycondensate useful as an electrode for battery, etc., which is highly resistant to oxidation and has high carbonation yield though with a large amount of solvent-soluble portion, by subjecting an aromatic quinone and an aromatic hydro compound to condensation reaction with dehydration in the presence of polyphospheric acid. CONSTITUTION:(A) An aromatic quinone and (B) an aromatic hydro compound are subjected to condensation reaction through dehydration in the presence of (C) polyphosphoric acid to afford the aimed polycondensate. The reaction is preferably carried out by using anthraquinone, etc., as the component A and 1,4-dihydronaphthalene, etc., as the component B at 120-300 deg.C for 5-20hr in the presence of an inert gas.
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Patent Agency Ranking
公开(公告)号：JPH04326930A
公开(公告)日：1992-11-16
申请号：JP12206691
申请日：1991-04-24
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HATORI HIROAKI , YAMADA YOSHIO , SHIRAISHI MINORU
Abstract: PURPOSE:To obtain a molecular sieve carbon membrane having clear molecular sieve capacity and high separation efficiency. CONSTITUTION:An aromatic polymer membrane is carbonized independently or in the farm deposited on a polymer porous support to form a molecular sieve carbon membrane having an extremely thin molecular sieve carbon layer having no crack or pinhole. This membrane has homogenous pores with a diameter of 10A or less and shows the permselectivity to gas and sieve action due to the size of a molecule and high separation efficiency.
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公开(公告)号：JPH04136222A
公开(公告)日：1992-05-11
申请号：JP25419090
申请日：1990-09-26
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HATORI HIROAKI , YAMADA YOSHIO , SHIRAISHI MINORU
Abstract: PURPOSE:To simply and industrially provide a graphite filament having an excellent crystallization property and conductivity by subjecting a conjugate filament to a thermal treatment, the conjugate fiber being prepared by disposing an aromatic polymer layer on a single filament of a polymer, etc. CONSTITUTION:A conjugate filament is subjected to a thermal treatment to provide the objective graphitized filament, the conjugated filament being prepared by disposing the layer of an aromatic polymer (preferably a polyimide, polyamide, polyamideimide, polyoxadiazole, polyarylate, polybenzimidazole or polyphenylene vinylene) on the single filament of a polymer or carbon.
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公开(公告)号：JPH01141984A
公开(公告)日：1989-06-02
申请号：JP30179887
申请日：1987-11-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： YAMADA YOSHIO , SHIRAISHI MINORU
Abstract: PURPOSE:To obtain a pitch having an increased MW and a high degree of carbonization and suited as a binder pitch or a matrix pitch, by condensing a pitch or a hydrogenated pitch with an aromatic quinone through dehydration in the presence of polyphosphoric acid. CONSTITUTION:A pitch or a hydrogenated pitch is condensed with an aromatic quinone through dehydration in the presence of polyphosphoric acid to obtain the purpose high-MW pitch. In this reaction, water is eliminated from the methylenic hydrogen atoms of an aromatic hydro compound present in the pitch and the carbonyl group of the aromatic quinone to form an addition compound. Since both are bonded through a double bond, thermal cleavage can hardly occur, and a high-MW heat-resistant pitch of a high degree of carbonization can be obtained. The reaction can be controlled by varying the reaction time, the reaction temperature and the concentration of phosphorus pentoxide in the polyphosphoric acid used.
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公开(公告)号：JPH07241461A
公开(公告)日：1995-09-19
申请号：JP6011494
申请日：1994-03-03
Applicant: AGENCY IND SCIENCE TECHN
Inventor： FURUTA TAKESHI , HATORI HIROAKI , YAMADA YOSHIO , YOSHIZAWA NORIKO , SHIRAISHI MINORU
Abstract: PURPOSE:To expand the range of the use of a carbon material in application fields such as absorbent, electromagnetic-shielding material, etc., by using a hollow short-fibrous carbon material formed through subjecting conifer charcoal to gaseous phase oxidation at a specified temp. and thereafter the resulting material to alkali treatment. CONSTITUTION:Matured wood of a conifer such as Japanese cedar, pine, Japanese cypress, etc., is subjected to heat treatment at 500 to 800 deg.C in an inert atmosphere to form charcoal. Then, this charcoal is subjected to gaseous phase oxidation at 270 to 350 deg.C in an atmosphere contg. oxygen in a
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公开(公告)号：JPS6385010A
公开(公告)日：1988-04-15
申请号：JP22743486
申请日：1986-09-26
Applicant: AGENCY IND SCIENCE TECHN
Inventor： YAMADA YOSHIO , SHIRAISHI MINORU
Abstract: PURPOSE:To obtain a thin and uniform carbon film useful for electrode for cells, various electronic materials readily, by producing a high polymer film from benzene by electrolytic oxidation polymerization method and then carbonizing. CONSTITUTION:Benzene is dissolved in a solvent containing a supporting electrolyte, an electric current is made to flow between two electrodes and benzene is subjected to electrolytic oxidation polymerization. Polyphenylene formed on the anode plate is washed and dried to give a polyphenylene film. Then the high polymer film is heat-treated in an inert gas and carbonized to give the aimed carbon film.
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