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1. 发明专利

JP2003268547A COLUMNAR SiC FORMED BODY AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2003268547A
公开(公告)日：2003-09-25
申请号：JP2002070040
申请日：2002-03-14
申请人： TOKAI CARBON KK
发明人： SUGIHARA TAKAOMI , MIYATA TSUGUO , KANAI KENICHI
IPC分类号： C04B41/87 , C23C16/42
摘要： PROBLEM TO BE SOLVED: To provide a high purity, high density columnar SiC which is suitably as various heat treatment members of a semiconductor production system, and to provide a production method therefor. SOLUTION: An SiC formed body produced by a CVD (chemical vapor deposition) method is subjected to machining to obtain a SiC bar having an almost circular cross-section. The SiC bar is used as a core material, and an SiC layer precipitated by the CVD method is stacked and integrated into the outer circumferential face of the core material to obtain the circular SiC. In the production method, An SiC formed body produced by precipitating SiC over the surface of a base material by a CVD method to deposit a film, and thereafter removing the base material is machined into a bar-shaped core material having an almost circular cross-section, and the core material is set in a CVD reaction system, and SiC is precipitated and stacked on the outer circumferential face of the core material by CVD reaction, and is integrated into the core material. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003183540A AQUEOUS DISPERSION OF OXIDIZED CARBON BLACK 审中-公开
公开(公告)号：JP2003183540A
公开(公告)日：2003-07-03
申请号：JP2001387803
申请日：2001-12-20
申请人： TOKAI CARBON KK
发明人： ARAI HIROAKI
IPC分类号： C09C1/56 , C09D11/00 , C09D11/324 , C09D11/38 , C09D17/00
摘要： PROBLEM TO BE SOLVED: To provide an aqueous dispersion of oxidized carbon black useful for aqueous black ink for use in a inkjet printer and aqueous ink. SOLUTION: This aqueous dispersion of the oxidized carbon black is made by liquid-phase oxidation of carbon black with a peroxo diacid or peroxo diacid salt so as to be 2-5 μmol/m 2 of a carboxyl group, neutralization of some or all of the carboxyl groups of the carbon black with an alkali solution of a dissociation constant (pKa) of 5 or less, and then a removal of a residual salt and purification, wherein the aqueous dispersion of the oxidized carbon black is classified so that, in the carbon black particle aggregate, an average particle diameter Dupa 50% is 50-130 nm, a maximum particle diameter Dupa 99% is 150-320 nm, and value of ΔDupa (mode)/Dupa (mode), the ratio of a half-band width in a particle size distribution ΔDupa (mode) to a mode diameter Dupa (mode), is 1.20 or less, and it is made by adjusting pH of the aqueous dispersion 4-6 and adding 1-6 wt.% (based on the carbon black) of a polyethyleneimine having a molecular weight of 200-1,000. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2003090371A CARBON SYSTEM WET FRICTION MATERIAL 审中-公开
公开(公告)号：JP2003090371A
公开(公告)日：2003-03-28
申请号：JP2001283104
申请日：2001-09-18
申请人： TOKAI CARBON KK
发明人： FUJIMORI TOYOMI , KASAI AKIHIKO
IPC分类号： F16D13/62 , B32B15/08 , F16D69/02 , F16D69/04
摘要： PROBLEM TO BE SOLVED: To provide a carbon system wet friction material having excellent frictional performance capable of improving a lubricating effect and a cooling effect and restraining a damage to a mating plate by efficiently holding up lubricating oil between frictional surfaces. SOLUTION: This carbon system wet frication material made by connecting a carbon fiber composite resin sheet heated and hardened by soaking carbon fiber cloth in thermosetting resin liquid on a metal support plate by processing it into a segment of a specified shape and the carbon fiber composite resin sheet is connected so that a direction of weaving yarn of either of warp and weft of the carbon fiber cloth in the carbon fiber composite resin sheet is set at an angle of 3-87 degrees against the radial direction of the metal support plate. Favorably, the angle is made at 30-60 degrees, and the shortest interval between the segments is made less than 3 mm.

4. 发明专利

JP2002246171A ARTIFICIAL GRAPHITE ELECTRODE FOR STEEL MAKING WITH SUPERIOR SPALLING RESISTANCE 失效
公开(公告)号：JP2002246171A
公开(公告)日：2002-08-30
申请号：JP2001041579
申请日：2001-02-19
申请人： TOKAI CARBON KK
发明人： KANEKO TADASHI
IPC分类号： H05B7/06 , C04B35/52 , C21C5/52 , H05B7/085
摘要： PROBLEM TO BE SOLVED: To provide an artificial graphite electrode for a steel making electric arc furnace having good spalling resistance and capable of greatly reducing generation of a tip cracks or a transverse cracks of a screw during use. SOLUTION: In this artificial graphite electrode, having a diameter of 24 inches or more and used for the electric steel making arc furnace, a sample piece sampled in the direction parallel to the electrode longitudinal direction and provided with a diameter of 20 mm and a length of 100 mm is provided with a volumetric specific gravity of 1.66 or more, a resistivity of 5.2 μΩ or less, an elastic modulus of 17,000 MPa or less, a three-point bending strength of 9.80 MPa or more, and a thermal expansion coefficient of 0.5×10-6/ deg.C with the quartz glass as the reference up to 100 deg.C, and an average shape factor of a clearance inside the electrode is 500-3,000.

5. 发明专利

JP2002179811A CARBONACEOUS WET FRICTION MATERIAL 失效
公开(公告)号：JP2002179811A
公开(公告)日：2002-06-26
申请号：JP2000374054
申请日：2000-12-08
申请人： TOKAI CARBON KK
发明人： KASAI AKIHIKO , FUJIMORI TOYOMI
IPC分类号： F16D69/02 , C08J5/14 , C08K3/04 , C08L21/00 , C08L101/00 , C09K3/14 , D06M11/00 , D06M11/74 , D06M15/41 , D06M15/693
摘要： PROBLEM TO BE SOLVED: To obtain a carbonaceous wet friction material having high coefficient of friction with its high stability and high abrasion resistance and excellent in frictional performance. SOLUTION: This carbonaceous wet friction material is obtained by impregnating a carbon fiber cloth with a mixed dispersion containing a thermosetting resin and a rubber followed by heating and curing to form a carbon fiber composite friction material sheet which is then put to cutting work and joined to metallic substrate; wherein it is characteristic that the porosity of the carbon fiber composite friction material sheet is

6. 发明专利

JP2002121453A WATER-BASED BLACK INK 失效
公开(公告)号：JP2002121453A
公开(公告)日：2002-04-23
申请号：JP2000311638
申请日：2000-10-12
申请人： TOKAI CARBON KK
发明人： KONO MASATAKA
IPC分类号： C09C1/56 , C09D11/16 , C09D11/17
摘要： PROBLEM TO BE SOLVED: To obtain a water-based black ink having excellent water dispersibility in water and a high level of blackness. SOLUTION: This water-based black ink is characterized by dispersing a carbon black having 30-300 m2/g nitrogen adsorption specific surface area (N2SA), 50-200 cm3/100 g DBP absorption volume, 40-160% specific tinting strength (Tint), >=3 μ equivalents/m2 sum total of carboxy groups and hydroxy groups in surface functional groups and 150-500 nm maximum particle diameter Dupa99% of agglomerates in an aqueous dispersion in water and regulating the pH of the dispersion to 5.0-9.0. The maximum diameter Dupa99% of the agglomerates indicates 99% cumulative frequency in a cumulative frequency distribution curve of agglomerate particle diameter prepared from the degree of frequency modulation of the scattered light by irradiating the aqueous dispersion of the carbon black with laser beams.

7. 发明专利

JP2002105355A HIGH-PURITY CARBON BLACK 失效
公开(公告)号：JP2002105355A
公开(公告)日：2002-04-10
申请号：JP2000303160
申请日：2000-10-03
申请人： TOKAI CARBON KK
发明人： MAEDA MASANOBU
IPC分类号： C09C1/48
摘要： PROBLEM TO BE SOLVED: To obtain high-purity carbon black suitable in the semiconductor- related field refusing to be contaminated with metallic impurities, e.g. for forming anti-reflection film during the photoresist step in a semiconductor device (e.g. ICs, LSIs) manufacturing process. SOLUTION: The objective high-purity carbon black is obtained by the following process: the surface layer part of a feedstock hydrocarbon flow introduced in a gaseous state via the lower part of a vertical type cylindrical reaction tube in the direction of the central axis of the tube is combusted with the air brought via a filter from the lower part scroll portion of the reaction tube and the feedstock hydrocarbon is pyrolyzed in a reaction zone heated by an external heater. The carbon black thus obtained is characterized by having an ash content of

8. 发明专利

JP2002031177A SINTERING MATERIAL EXCELLENT IN RUST PREVENTIVE ABILITY 失效
公开(公告)号：JP2002031177A
公开(公告)日：2002-01-31
申请号：JP2000212196
申请日：2000-07-13
申请人： TOKAI CARBON KK
发明人： IKETANI AZUMA
IPC分类号： F16D13/62 , B22F7/04 , B23K20/00 , C22C9/02 , C22C32/00 , C23C30/00 , C25D5/12 , C25D5/26 , C25D7/00 , F16D69/00
摘要： PROBLEM TO BE SOLVED: To provide a sintering material which can be used properly as a friction material because the back steel plate under a copper coating film does not become rusty and the joint strength of a lining material is not deteriorated even if it is used in an environment where water containing salt splashes on the lining material in a friction material comprising metallic lining material diffusion-jointed on the steel back plate by sintering through the copper film. SOLUTION: A film made of nickel, chromium or nickel chromium is made to intervene between the surface of the back plate and the copper film. Films made of copper, nickel, chromium or nickel chromium are desirably formed by plating.

9. 发明专利

JP2002030233A CARBON BLACK FOR COMPOUNDING TO FUNCTIONAL RUBBER 失效
公开(公告)号：JP2002030233A
公开(公告)日：2002-01-31
申请号：JP2000217105
申请日：2000-07-18
申请人： TOKAI CARBON KK
发明人： SAKAKIBARA AKIHIRO
IPC分类号： C08K3/04 , C08L21/00 , C09C1/48
摘要： PROBLEM TO BE SOLVED: To provide carbon black which is compounded into functional rubber, can impart high setting resistance without lowering extrusion processability of the compounded rubber, has a high exothermic property on UHF vulcanization, and can impart excellent setting resistance and excellent UHF vulcanization performance. SOLUTION: This carbon black for being compounded into functional rubber, characterized by having characteristic ranges comprising a nitrogen adsorption specific surface area (N2SA) of 20 to 40 m2/g, a DBP absorption of 100 to 135 cm3/100 g, and a toluene color transmittance (LT) of >=85%, and has a specific tinting strength (Tint) satisfying the expression: Tint>=1.4N2SA+2...(1). It is more preferable to have a color transmittance in toluene (LT) of >=90% and satisfy the expression: Tint>=1.4N2SA+4...(2).

10. 发明专利

JP2002029844A MEMBER FOR VAPOR PHASE GROWN APPARATUS 失效
公开(公告)号：JP2002029844A
公开(公告)日：2002-01-29
申请号：JP2000215798
申请日：2000-07-17
申请人： TOKAI CARBON KK
发明人： FUJITSUKA KUNIHIRO
IPC分类号： C04B35/52 , C23C16/44 , H01L21/31
摘要： PROBLEM TO BE SOLVED: To provide a member for a vapor phase growth apparatus which is excellent in oxidation resistance, plasma resistance, corrosion resistance, etc., and is usable stably for a long period of time. SOLUTION: This member for the vapor phase growth apparatus consists of an Si-containing glassy carbon material having a tissue structure which is uniformly dispersed and combined with Si of an atom level at a weight ratio of 0.5 to 15 wt.% in a glassy carbon structure and is uniformly distributed with the content (y) wt.% of O atoms existing in the structure within a range of ±2 wt.% of the content (x) wt.% of the Si atoms. The tissue structure has the structural characteristic in which the crystal structure substantially exclusive of a graphite structure does not substantially exist, the diffraction lines belonging to the metal Si and Si compound by the pattern analysis using an X-ray diffraction method are not detected and the granular structure is not identifiable by the observation of a transmission type electronmicroscope(TEM).

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