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41. 发明专利

JPH0532454A SINTERED MAGNESIA CONTAINING DISPERSED CUBIC ZIRCONIA PARTICLE AND ITS PRODUCTION 失效
公开(公告)号：JPH0532454A
公开(公告)日：1993-02-09
申请号：JP20892191
申请日：1991-07-26
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , FUKUDA MASASHI
IPC分类号： C04B35/04
摘要： PURPOSE:To provide a sintered magnesia containing dispersed cubic zirconia particles, having high density and excellent mechanical strength, breaking toughness and thermal shock resistance and suitable as a corrosion-resistant refractory material such as ceramic for baking electronic ceramics, crucible for baking beta-alumina and metal-smelting crucible and to provide a process for producing the sintered magnesia. CONSTITUTION:The objective sintered magnesia is produced by mixing 75-99wt.% of magnesia powder having a purity of >=99.9%, a specific surface area of >=5m /g and an average particle diameter of =99.9%, a specific surface area of >=5m /g and an average particle diameter of =1400 deg.C.

42. 发明专利

JPH04228470A PARTICLE DISPERSION TYPE SINTERED MATERIAL OF MAGNESIA AND ITS PRODUCTION 失效
公开(公告)号：JPH04228470A
公开(公告)日：1992-08-18
申请号：JP12570091
申请日：1991-03-08
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , FUKUDA MASASHI
IPC分类号： C04B35/04
摘要： PURPOSE:To obtain a particle dispersion type sintered material of magnesia suitably useful as porcelain for burning electronic ceramics and substrate, having excellent mechanical strength, fracture toughness and thermal shock resistance. CONSTITUTION:A sintered material of magnesia consisting of 70.0-99.0wt.% magnesia particles having =80wt.% particles of oxide of the rare earth element are dispersed to a grain boundary in a matrix comprising the magnesia particles.

43. 发明专利

JPH04132665A PREPARATION OF SLURRY FOR CAST FORMING OF BORON NITRIDE-BASED COMPOUND CERAMICS 失效
公开(公告)号：JPH04132665A
公开(公告)日：1992-05-06
申请号：JP25193090
申请日：1990-09-25
申请人： UBE INDUSTRIES , UBE CHEM IND
发明人： NISHIDA AKIO , UCHIDA HISASHI
IPC分类号： C04B35/583 , B28B1/26 , C04B35/00 , C04B35/58 , C04B35/622
摘要： PURPOSE:To obtain a slurry capable of providing a high-density formed compact and a sintered compact without any change in pH and viscosity with time by respectively preparing a boron nitride-based and a nitride ceramics-based slurries for cast forming with the same peptizer and dispersion medium and then mixing both slurries. CONSTITUTION:A boron nitride-based slurry for cast forming and a nitride ceramics-based slurry for cast forming are prepared under the respective optimum peptizing conditions using the same peptizer and dispersion medium and both are then mixed to prepare the objective slurry. Boron nitride powder having =20m /g BET specific surface area is preferred as the above-mentioned boron nitride powder. Silicon nitride, aluminum nitride, etc., can be used as nitride ceramics. Water having high safety is preferably used as the dispersion medium. A peptizer capable of forming organic polyaniline having large peptizing action in a small amount added thereof is especially advantageous as the peptizer to peptization of the boron nitride powder and preferred in aspect of cost.

44. 发明专利

JPS6461505A MONOFILAMENT CONTAINING SPINEL PARTICLE AND PRODUCTION THEREOF 失效
公开(公告)号：JPS6461505A
公开(公告)日：1989-03-08
申请号：JP21290287
申请日：1987-08-28
申请人： UBE INDUSTRIES
发明人： UEKI AKIRA , GOTO YOSHIKAZU , NISHIDA AKIO
IPC分类号： B24D11/00 , D01F1/10 , D01F6/46 , D01F6/60 , D01F6/90
摘要： PURPOSE:To obtain the titled monofilament having excellent abrasive property, toughness, flexural fatigue resistance, etc., and suitable as an abrasive, by melt- spinning a composition composed of a synthetic polymer and a specific amount of spinel particle. CONSTITUTION:The objective monofilament is produced by melt-spinning a composition composed of a synthetic polymer (e.g. polyethylene terephthalate) and 10-50wt.% (based on the polymer) of spinel particles (expressed by formula MgAl2O4, preferably having an aspect ratio of 1.0-1.3 and preferably containing particles of 0.02-1mum in diameter accounting for 85wt.% of the whole particles).

45. 发明专利

JPS60161327A PREPARATION OF FINE MAGNESIA POWDER HAVING HIGH PURITY 失效
公开(公告)号：JPS60161327A
公开(公告)日：1985-08-23
申请号：JP1575884
申请日：1984-01-31
申请人： UBE INDUSTRIES
发明人： KOBAYASHI KAZUICHI , YOSHIDA KOUZABUROU , NISHIDA AKIO
IPC分类号： C04B35/04 , C01F5/04
摘要： PURPOSE:To obtain fine MgO powder having high purity and extremely small particle size by specifying conditions for generating Mg vapor and for bringing the Mg vapor into contact with O2 in a process for prepg. MgO by allowing Mg vapor generated by heating Mg to contact O2. CONSTITUTION:Metallic Mg 5 is charged in a retort 3 installed in an evaporating section A and is heated in an electric furnace 2 to evaporate Mg 5 in an atmosphere of Mg vapor. Generated Mg vapor is fed to an oxidation reaction section B where it is allowed to contact with O2 in the gas supplied to the reaction section B through a gas feeding duct 6. In this stage, the partial pressure of O2 in the O2-contg. gas is adjusted to >=2 times the partial vapor pressure of Mg, and the reaction temp. is held at 1,200-2,000 deg.C, and the Mg vapor is exhausted from an exhausting port 4 and is allowed to contact with O2-contg. gas fed from the duct 6 in parallel flow to oxidize Mg to MgO. Generated fine MgO powder is sucked by an exhaust gas pump 9 and collected by a filter 7 in a collecting section C while shielding air with a cover 8. By this method, fine MgO powder having high purity and

46. 发明专利

JP2001291638A CHIP CAPACITOR 失效
公开(公告)号：JP2001291638A
公开(公告)日：2001-10-19
申请号：JP2000109258
申请日：2000-04-11
申请人： HOKURIKU ELECT IND , UBE INDUSTRIES
发明人： AZUMA KOJI , OBATA TSUTOMU , NISHIDA AKIO , HASHIMOTO KAZUO
IPC分类号： C04B35/00 , C04B35/495 , H01G2/06 , H01G4/12 , H01G4/30 , H01G4/33 , H01G4/38
摘要： PROBLEM TO BE SOLVED: To provide a chip capacitor, which can be arranged in a multilayered circuit board by reducing its thickness. SOLUTION: This chip capacitor is constituted, in such a way that a conductive film 3, composed of a Ti thin film, is formed on a base 2 composed of an alkali-resistant flexible film by a thin film forming technique and a dielectric layer 4 composed of a titanium-containing ferroelectric film is formed on the conductive layer 3 by hydrothermal synthesis method. Finally, two electrode layers 5 and 6 are formed on the dielectric layer 4, by leaving a space between the layers 5 and 6.

47. 发明专利

JPH10273660A SOLIDIFYING MATERIAL FOR WATER-CONTAINING SOIL AND SOLIDIFICATION AND IMPROVEMENT OF WATER-CONTAINING SOIL 失效
公开(公告)号：JPH10273660A
公开(公告)日：1998-10-13
申请号：JP7858397
申请日：1997-03-28
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , UEDA MAKOTO , FUJII TERUAKI
IPC分类号： E02D3/12 , C04B28/06 , C04B28/14 , C09K17/02 , C09K17/06 , C09K17/08 , C09K17/10 , C09K17/18 , C09K17/42 , C09K17/48
摘要： PROBLEM TO BE SOLVED: To obtain the subject solidifying material exhibiting excellent performance for the solidification and improvement of water-containing soil by including a specific cement mixture, aluminum sulfate or iron sulfate, and gypsum at respectively specific ratios. SOLUTION: This solidifying material is composed of (A) 7-65 pts.wt. (based on 100 pts.wt. of the total solidifying material) of a cement mixture composed of alumina cement and Portland cement, (B) 2-30 pts.wt. of aluminum sulfate or iron sulfate and (C) the remaining part of gypsum. The content of the component C is >=20 pts.wt. The weight ratio of alumina cement to Portland cement of the component A is preferably 1.5-9. The solidifying material is preferably further incorporated with a lithium salt, an inorganic porous water-absorbent or an organic polymer water-absorbent, etc. The unconfined compression strength of the soil improved with the solidifying material is >=0.5 kgf/cm , which is a walkable level to enable the work on the soil.

48. 发明专利

JPH1099817A TREATMENT OF EXTRACTION DUST OF CEMENT MANUFACTURING APPARATUS 失效
公开(公告)号：JPH1099817A
公开(公告)日：1998-04-21
申请号：JP26063696
申请日：1996-10-01
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , FUJII TERUAKI
IPC分类号： B09B3/00 , C04B7/60
摘要： PROBLEM TO BE SOLVED: To provide a treatment method applying water washing treatment to the dust accompanied by the extraction gas when a part of baked gas is extracted in order to reduce the circulation of chlorine, alkali and sulfur in a cement manufacturing apparatus to reutilize a solid component as a cement raw material while removing a harmful substance from the treated soln. up to a drainage standard value or less to discharge and discard the treated soln. SOLUTION: A process wherein water is added to extraction dust to prepare a slurry and the pH value of the slurry is adjusted to 10 or more to perform the solid-liquid separation of the slurry, a process adjusting the pH of the obtained filtrate to 6-8 to sediment a dissolved harmful substance to perform the second solid-liquid separation and a process adjusting the pH value of the obtained filtrate to 1.5-3 and adding a ferrous compd. thereto and subsequently adjusting the pH value of the soln. to 9-10 to form a sediment and further adding a high molecular metal collector and a high molecular flocculant to the sediment-containing formed slurry to perform third solid-liquid separation are combined to remove alkali and chlorine from a washing soln.

49. 发明专利

JPH09169517A PRODUCTION OF PERLITE 失效
公开(公告)号：JPH09169517A
公开(公告)日：1997-06-30
申请号：JP33444895
申请日：1995-12-22
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , YOKOTA MORIHISA , TODA YASUHIKO , KAWAMURA YASUHIRO , JINNO TATSUHIKO
IPC分类号： C04B14/18 , C01B33/26 , C04B20/06 , C04B35/64 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To obtain white perlite satisfactorily expanded by firing at a relatively low temp. by expanding glassy volcanic rock in a specified gaseous atmosphere. SOLUTION: Glassy volcanic rock is expanded by heating to the softening point or above in a high conductivity gaseous atmosphere contg. =90% at least one kind of gas selected from among H2 , He, Ne and methane.

50. 发明专利

JPH05105515A PRODUCTION OF SILICON NITRIDE-BASED CERAMIC COMPACT 失效
公开(公告)号：JPH05105515A
公开(公告)日：1993-04-27
申请号：JP29046491
申请日：1991-10-11
申请人： UBE INDUSTRIES
发明人： NISHIDA AKIO , NAKADA YUKIO
IPC分类号： B28B1/26 , C04B35/58 , C04B35/584 , C04B35/626
摘要： PURPOSE:To obtain an economically inexpensive silicon nitride-based ceramic compact, capable of preparing a highly dispersed slip at a high concentration without deterioration in compact density, having a small dry heat shrinkage factor and capable of forming products of a certain large size or a complicated shape without breaking at the time of forming. CONSTITUTION:A method for producing a silicon nitride-based ceramic compact is characterized by cast forming a slip composed of 50-95wt.% silicon nitride powder having 5-20m /g specific surface area and 5-50wt.% sialon powder having 0.5-15m /g specific surface area.

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