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1. 发明专利

JPH10212626A PRODUCTION OF PITCH-BASED CARBON FIBER 失效
公开(公告)号：JPH10212626A
公开(公告)日：1998-08-11
申请号：JP1609097
申请日：1997-01-30
申请人： NIPPON OIL CO LTD , NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO , NIPPON GRAPHITE IND LTD
发明人： KATO OSAMU , KIHARA TSUTOMU , ARAI YUTAKA , FURUYAMA MASATOSHI , KOBAYASHI TAKESHI , DOKEN KATSUYUKI
IPC分类号： C10C3/02 , C10C3/04 , C10C3/10 , D01F9/145
摘要： PROBLEM TO BE SOLVED: To provide a method for producing carbon fiber having a high tensile modulus and high compression strength. SOLUTION: In a method for producing a carbon fiber by melt-spinning mesophase pitch, subjecting the pitch to infusibilization treatment and baking treatment, mesophase pitch having 0.16-0.31 unoriented carbon ratio at 340 deg.C is melted and flow of the pitch is once narrowed in a nozzle inlet part and after passing through the nozzle inlet part, the flow of the pitch is enlarged to an inlet hole having a diameter larger than that of the nozzle inlet part and the flow of the pitch is again narrowed in a first approach part in which a shape of the nozzle from the inlet hole to a discharge hole is opened at an angle of 40-150 deg. and a second approach part opened at an angle of 170-185 deg. on the inlet hole side located between the first approach part and the discharge hole and passed through the discharge hole provided in collected part of the second approach part and spun.

2. 发明专利

DE69103313T2 未知
公开(公告)号：DE69103313T2
公开(公告)日：1994-12-01
申请号：DE69103313
申请日：1991-04-05
申请人： NIPPON OIL CO LTD
发明人： SOHDA YOSHIO , KATO OSAMU , KOUNO TAKEFUMI , KIHARA TSUTOMU
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80
摘要： A carbon/carbon composite is prepared by mixing 100 parts of a carbonaceous pitch with 1-45 parts by weight of at least one aromatic compound containing at least one functional group selected from nitro and hydroxyl groups, then impregnating a bundle of carbon fibers with the resulting mixture, thereafter carbonizing the thus-impregnated carbon fiber bundle under pressure or under pressing, and if necessary, further carbonizing the thus-carbonized carbon fiber bundle at atmospheric pressure.

3. 发明专利

DE69103313D1 未知
公开(公告)号：DE69103313D1
公开(公告)日：1994-09-15
申请号：DE69103313
申请日：1991-04-05
申请人： NIPPON OIL CO LTD
发明人： SOHDA YOSHIO , KATO OSAMU , KOUNO TAKEFUMI , KIHARA TSUTOMU
IPC分类号： C04B35/83 , C04B35/52 , C04B35/80
摘要： A carbon/carbon composite is prepared by mixing 100 parts of a carbonaceous pitch with 1-45 parts by weight of at least one aromatic compound containing at least one functional group selected from nitro and hydroxyl groups, then impregnating a bundle of carbon fibers with the resulting mixture, thereafter carbonizing the thus-impregnated carbon fiber bundle under pressure or under pressing, and if necessary, further carbonizing the thus-carbonized carbon fiber bundle at atmospheric pressure.

4. 发明专利

DE69204736T2 未知
公开(公告)号：DE69204736T2
公开(公告)日：1996-02-22
申请号：DE69204736
申请日：1992-05-15
申请人： NIPPON OIL CO LTD
发明人： TAKASHIMA HIROAKI , KIHARA TSUTOMU , KATO OSAMU
IPC分类号： D01F9/14 , C10C1/00 , C10C3/02 , D01F9/145 , D01F9/24
摘要： Pitch-based carbon fibers having superior compression characteristics are obtained by mixing a polycyclic aromatic compound and a hydrogen donating compound e.g. tetrahydropaphtelene, dihydroanthracene, dihydrophenanthene or tetrahydropyrene at a mole ratio of the latter to the former of from 0.1 to 10, polymerzing the resulting mixture at a temperature of 50 DEG to 400 DEG C in the presence of a Lewis acid as catalyst, then removing the catalyst, thereafter heat-treating the resulting polymer to obtain a pitch containing 5-40 weight % of anisotropic spheres of 5-60 mu m, having a total amount of aliphatic hydrogen of 25-50% as meassured by H-NMR and an amount of aliphatic hydrogen after beta (i.e. at the gamma position and beyond) of 5-25% and containing not more tha 30% of oriented carbon based on a total amount of aromatic carbon as measured by high-temperature melting C-NMR, then spinning said pitch, then making the resulting pitch fiber infusible and subjecting the pitch fiber thus rendered infusible to a carbonization treatment.

5. 发明专利

DE69204736D1 未知
公开(公告)号：DE69204736D1
公开(公告)日：1995-10-19
申请号：DE69204736
申请日：1992-05-15
申请人： NIPPON OIL CO LTD
发明人： TAKASHIMA HIROAKI , KIHARA TSUTOMU , KATO OSAMU
IPC分类号： D01F9/14 , C10C1/00 , C10C3/02 , D01F9/145 , D01F9/24
摘要： Pitch-based carbon fibers having superior compression characteristics are obtained by mixing a polycyclic aromatic compound and a hydrogen donating compound e.g. tetrahydropaphtelene, dihydroanthracene, dihydrophenanthene or tetrahydropyrene at a mole ratio of the latter to the former of from 0.1 to 10, polymerzing the resulting mixture at a temperature of 50 DEG to 400 DEG C in the presence of a Lewis acid as catalyst, then removing the catalyst, thereafter heat-treating the resulting polymer to obtain a pitch containing 5-40 weight % of anisotropic spheres of 5-60 mu m, having a total amount of aliphatic hydrogen of 25-50% as meassured by H-NMR and an amount of aliphatic hydrogen after beta (i.e. at the gamma position and beyond) of 5-25% and containing not more tha 30% of oriented carbon based on a total amount of aromatic carbon as measured by high-temperature melting C-NMR, then spinning said pitch, then making the resulting pitch fiber infusible and subjecting the pitch fiber thus rendered infusible to a carbonization treatment.

6. 发明专利

JPH055220A PRODUCTION OF PITCH CARBON FIBER HAVING EXCELLENT COMPRESSION PHYSICAL PROPERTY 失效
公开(公告)号：JPH055220A
公开(公告)日：1993-01-14
申请号：JP20659691
申请日：1991-05-16
申请人： NIPPON OIL CO LTD
发明人： TAKASHIMA HIROAKI , KATO OSAMU , KIHARA TSUTOMU
IPC分类号： D01F9/14 , C10C1/00 , C10C3/02 , D01F9/145 , D01F9/24
摘要： PURPOSE:To produce a pitch carbon fiber having an excellent compression physical property by polymerizing a mixture of polycyclic aromatic compound with a hydrogen-donating compound, spinning the produced pitch and subsequently subjecting the spun fiber to an infusi treatment and further to a carbonization treatment. CONSTITUTION:A polycyclic aromatic compound having two or more rings, such as naphthalene or anthracene, and a hydrogen-donating compound such as tetralin or dihydroanthracene are copolymerized in a molar ratio of 1:0.1-10 in the presence of a Levis acid such as AlCl3 or AlBr3 at 50-40O deg.C, and the catalyst is removed from the copolymer. The copolymer is subjected to a thermal treatment at 250-500 deg.C to produce a spinning pitch containing a 5-40% of anisotropic spheres having diameters of 5-60mum, and having an all aliphatic hydrogen content of 25-50%, a beta or higher aliphatic hydrogen content of 5-25% and an oriented carbon content of

7. 发明专利

JPH0416556A PRODUCTION OF CARBON-CARBON COMPOSITE MATERIAL 失效
公开(公告)号：JPH0416556A
公开(公告)日：1992-01-21
申请号：JP11991790
申请日：1990-05-11
申请人： NIPPON OIL CO LTD
发明人： KAMIMURA SEIICHI , HAYATA YOSHIHO , KATO OSAMU , KONO TAKESHI , KIHARA TSUTOMU
IPC分类号： C04B35/83 , D01F11/14
摘要： PURPOSE:To obtain a high strength carbon-carbon composite material not causing breaking due to delamination by impregnating a polymer of a nitrogen-contg. heterocyclic compd. into a bundle of carbon fibers and carbonizing the polymer under pressure or carrying out further carbonization under ordinary pressure. CONSTITUTION:A nitrogen-contg. heterocyclic compd. such as quinoline, isoquinoline or acridine is polymerized with a catalyst to obtain a polymer as a precursor of a carbonaceous matrix. This polymer is impregnated into a bundle of carbon fibers and carbonized under pressure or under pressing or further carbonized under ordinary pressure as required.

8. 发明专利

JPH11157820A EXPANDED GRAPHITE, ITS PRODUCTION AND OIL ABSORBING MATERIAL 失效
公开(公告)号：JPH11157820A
公开(公告)日：1999-06-15
申请号：JP33270097
申请日：1997-12-03
申请人： NIPPON OIL CO LTD
发明人： KIHARA TSUTOMU , OZAWA KAZUHIRO , HARAKAWA MICHIHARU , INAGAKI MICHIO
IPC分类号： C04B35/83 , B01J20/20 , C01B31/04 , C04B35/52 , D01F9/12
摘要： PROBLEM TO BE SOLVED: To obtain an oil absorbing material attained in excellent forming workability and having excellent oil absorbing ability by oxidizing a carbon fiber formed material with an acid and an oxidizing agent and after that, heating. SOLUTION: A method for producing an expanded graphite from the carbon filter formed material is constituted of a process for producing a graphite intercalation compound by oxidation reaction and a process for expanding by heating. The carbon fiber formed material means a formed material using a carbon fiber (e.g. ccbon fiber woven fabric, carbon fiber felt, carbon fiber mat or the like). As the oxidizing method of the carbon fiber formed material, a chemical dipping process, electrolytic oxidation process and the like may be cited, but the chemical dipping method is preferable in the view point of productivity and cost. The method uses a mixture of a concentrated acid with a strong oxidizing agent. As the oxidizing agent, nitric acid, hydrogen peroxide, potassium dichromate, peroxo ammonium disulfate and the like are exemplified. The expanded graphite is obtained by heating the graphite intercalation compound after being oxidized at 500-3,000 deg.C under atmospheric pressure or reduced pressure.

9. 发明专利

JPH0416555A PRODUCTION OF CARBON-CARBON COMPOSITE MATERIAL 失效
公开(公告)号：JPH0416555A
公开(公告)日：1992-01-21
申请号：JP11991690
申请日：1990-05-11
申请人： NIPPON OIL CO LTD
发明人： KAMIMURA SEIICHI , HAYATA YOSHIHO , KATO OSAMU , KONO TAKESHI , KIHARA TSUTOMU
IPC分类号： C04B35/83 , D01F11/14
摘要： PURPOSE:To obtain a high strength carbon-carbon composite material not causing breaking due to delamination by impregnating a polymer of a polycryclic arom. compd. into a bundle of carbon fibers and carbonizing the polymer under pressure or carrying out further carbonization under ordinary pressure. CONSTITUTION:A polycyclic arom. compd. such as naphthalene, anthracene or other condensed polycyclic arom. hydrocarbon is polymerized in the presence of a binder such as methylene chloride or chloroform to obtain a polymer as a precursor of a carbonaceous matrix. This polymer is impregnated into a bundle of carbon fibers and carbonized under pressure or under pressing or further carbonized under ordinary pressure as required.

10. 发明专利

JPH03290365A PRODUCTION OF CARBON/CARBON COMPOSITE MATERIAL 失效
公开(公告)号：JPH03290365A
公开(公告)日：1991-12-20
申请号：JP9017590
申请日：1990-04-06
申请人： NIPPON OIL CO LTD
发明人： KAMIMURA SEIICHI , HAYATA YOSHIHO , KATO OSAMU , KONO TAKESHI , KIHARA TSUTOMU
IPC分类号： C04B35/83
摘要： PURPOSE:To obtain a carbon/carbon composite material having high strength and resistant to interlaminar separation by mixing a specific aromatic compound to a carbonaceous pitch, impregnating the obtained mixture to a carbon fiber bundle and carbonizing under pressure or with a press. CONSTITUTION:The objective composite material can be produced by mixing 100 pts.wt. of a carbonaceous pitch with 1-45 pts.wt. of one or more aromatic compounds containing nitro group and/or hydroxyl group, impregnating the mixture in a carbon fiber bundle, carbonizing under pressure or with a press and, as necessary, further carbonizing under normal pressure. The aromatic compound having nitro group and/or hydroxyl group is usually the compounds expressed by formula 1 or formula 2. In the formulas, Z is COOH, CHO or an organic residue such as 1-4C (substituted) alkyl; l, m, p and q are integers of 0-3; 1

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