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1. 发明专利

JP2002155276A METHOD FOR PRODUCING RARE EARTH PHOSPHATE FLUOPHOR 失效
公开(公告)号：JP2002155276A
公开(公告)日：2002-05-28
申请号：JP2000352355
申请日：2000-11-20
申请人： KASEI OPTONIX , MITSUBISHI CHEM CORP
发明人： IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , KIJIMA NAOTO
IPC分类号： C01B25/45 , C09K11/08 , C09K11/81 , H01J11/22 , H01J11/34 , H01J11/42 , H01J29/20 , H01J61/44 , H01J11/02
摘要： PROBLEM TO BE SOLVED: To provide a method for inexpensively producing a high-purity rare earth phosphate fluophor of spherical particle shape with narrow particle size distribution, slight aggregated particles, uniform chemical composition and excellent emission characteristics, and suitable for forming coating film on cathod ray tubes, fluorescent lamps, plasma display panels(PDP), field emission displays(FED), etc. SOLUTION: This method for producing a rare earth phosphate fluophor comprises the following process: a fluophor stock aqueous solution containing at least one rare earth element selected from La, Gd and Y, P, Ce and Tb is prepared and made into droplets, which are then introduced together with a carrier gas into a pyrolysis oven and heated at 800-1,900 deg.C for 1 s to 10 min.

2. 发明专利

JP2002038144A METHOD FOR PRODUCING ZINC SILICATE FLUORESCENT SUBSTANCE 失效
公开(公告)号：JP2002038144A
公开(公告)日：2002-02-06
申请号：JP2000228834
申请日：2000-07-28
申请人： KASEI OPTONIX , MITSUBISHI CHEM CORP
发明人： IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , KIJIMA NAOTO
IPC分类号： C09K11/08 , C09K11/59
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a manganese-activated zinc silicate fluorescent substance having a narrow particle size distribution, uniform in shape and chemical composition and excellent in luminous characteristics. SOLUTION: This method for manganese-activated zinc silicate fluorescent substance is characterized by preparing an aqueous solution containing at least manganese, silicon and zinc, forming the resultant solution into droplets, introducing the formed droplets, together with a carrier gas, into a thermal decomposition reactional furnace, heating and thermally decomposing the droplets at 1,050-1,430 deg.C temperature for a time within the range of 1 s to 10 min.

3. 发明专利

JP2000109825A PREPARATION OF TERBIUM-ACTIVATED YTTRIUM ALUMINATE FLUORESCENT SUBSTANCE 失效
公开(公告)号：JP2000109825A
公开(公告)日：2000-04-18
申请号：JP31388498
申请日：1998-09-30
申请人： KASEI OPTONIX
发明人： KYO INSAN , IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , BOKU SHOHIN
IPC分类号： C09K11/08 , C09K11/80
摘要： PROBLEM TO BE SOLVED: To provide a process for inexpensively preparing a terbium-activated yttrium aluminate fluorescent substance which has a narrow particle size distribution, contains few agglomerated particles, shows a high globular property, is suitable for forming uniform, fine and bright fluorescent films such as cathode- ray tubes, fluorescent lamps, PDPs or FEDs and has a uniform chemical composition, a high purity and a good luminescent property. SOLUTION: An aqueous solution containing yttrium, aluminum and terbium is prepared, which is introduced into a pyrolysis reactor in droplet form together with a carrier gas. The solution is heated at a temperature ranging from 600 to 1,750 deg.C for the in-pile residence time ranging from 1 s to 10 min and re-heated at a temperature ranging from 1,050 to 1,750 deg.C for a time ranging from 0.1 s to 24 hr.

4. 发明专利

JP2000096048A PRODUCTION OF TERBIUM-ACTIVATED YTTRIUM SILICATE FLUORESCENT SUBSTANCE 失效
公开(公告)号：JP2000096048A
公开(公告)日：2000-04-04
申请号：JP30315198
申请日：1998-09-18
申请人： KASEI OPTONIX
发明人： KYO INSAN , IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , BOKU SHOHIN
IPC分类号： C09K11/08 , C09K11/79
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a terbium-activated fluorescent substance of a rare earth silicic acid salt, having narrow particle size distribution, hardly including agglomerate thereof, having a highly pure, uniform and homogeneous chemical composition, capable of forming a compact highly luminescent fluorescent film, and manifesting excellent luminescent characteristics. SOLUTION: This method for producing the terbium-activated yttrium silicate fluorescent substance comprises a step for forming an aqueous solution containing terbium, silicon and yttrium, introducing the liquid drop comprising the aqueous solution into a thermally decomposing reactor with a career gas, and heating the obtained mixture to heat the mixture only for a retention time of 1 sec to 10 min at 1050-1700 deg.C, or a step for introducing the liquid drop into the thermally decomposing reactor with the career gas and heating the obtained mixture to heat only for the retention time of 1 sec to 10 min at 600-1050 deg.C, and a step for additionally reheating the obtained product for 1 sec to 24 hr at 1050-1350 deg.C.

5. 发明专利

JP2000336353A PRODUCTION OF FLUORESCENT ALUMINATE 失效
公开(公告)号：JP2000336353A
公开(公告)日：2000-12-05
申请号：JP14936099
申请日：1999-05-28
申请人： KASEI OPTONIX
发明人： IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , KIJIMA NAOTO
IPC分类号： C09K11/08 , C09K11/64 , C09K11/80
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a spherical fluorescent aluminate which has a narrow particle size distribution and scarcely contains coagulated particles, and to provide a method for producing the highly pure fluorescent aluminate having a uniform chemical composition and excellent luminous characteristics at a low cost. SOLUTION: This method for producing a fluorescent aluminate comprises preparing an aqueous solution which contains at least one alkaline earth metal element selected from the group consisting of Ba, Sr and Ca, Eu and/or Mn, Mg and Al, introducing liquid drops comprising the aqueous solution into a thermal decomposition reactor with a carrier gas, and heating the liquid drops at a temperature of 1,300 to 2,000 deg.C for 0.1 sec to 10 min.

6. 发明专利

JP2000087033A PRODUCTION OF PHOSPHOR 失效
公开(公告)号：JP2000087033A
公开(公告)日：2000-03-28
申请号：JP25800798
申请日：1998-09-11
申请人： KASEI OPTONIX
发明人： KYO INSAN , IGNATIUS ULETTO LENGORO , FURUMIYA TAKASHI , OKUYAMA KIKUO , BOKU SHOHIN
IPC分类号： C09K11/08 , C09K11/80
摘要： PROBLEM TO BE SOLVED: To provide a process for inexpensively producing a cerium-activated yttrium aluminate phosphor having a high purity and a homogeneous chemical composition, having a narrow particle size distribution, a low agglomerate content, and excellent sphericity, and suited for the formation of a homogenous dense high-luminance fluorescent film for e.g. a cathode-ray tube, a fluorescent lamp, PDP(plasma display panel) or FED(field emission display). SOLUTION: This process comprises: preparing an aqueous solution containing yttrium, cerium, and aluminum; introducing the solution in the form of liquid drops carried by a gas into a thermal cracking reactor; heating the feed at a temperature range of 600-1,900 deg.C for an in-oven residence time of 1 sec to 10 min, and further heating it at a temperature range of 950-1,450 deg.C for 1 sec to 24 hr.

7. 发明专利

JP2003027050A Method for producing phosphor particle 审中-公开
标题翻译：生产磷颗粒的方法
公开(公告)号：JP2003027050A
公开(公告)日：2003-01-29
申请号：JP2001218181
申请日：2001-07-18
申请人： Kasei Optonix Co Ltd , Mitsubishi Chemicals Corp , 三菱化学株式会社 , 化成オプトニクス株式会社
发明人： IGNATIUS ULETTO LENGORO , OKUYAMA KIKUO , SHIMOMURA YASUO , KIJIMA NAOTO
IPC分类号： C09K11/08 , C09K11/77 , C09K11/84
摘要： PROBLEM TO BE SOLVED: To provide a method for inexpensively producing fine phosphor particles being capable of forming a uniform dense high-luminance fluorescent film when used in e.g. cathode-ray tubes, fluorescent lamps, PDPs because it is highly crystalline, has a low content of agglomerations, and comprises fine particles, and having a high purity, a uniform chemical composition, and excellent luminous characteristics.
SOLUTION: In the method for producing phosphor particles by spraying a phosphor constituent metal-containing solution into an entraining air to form liquid droplets, drying the droplets to form solid phosphor material particles, and heating the material particles to form a precursor of a phosphor and producing the phosphor particles through the route of the precursor, the above heating is continued in the state in which the precursor is in contact with a molten medium chemically inert to the phosphor to form a plurality of particles in a dispersed state from the phosphor floating in the entraining gas.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种低成本地生产能够形成均匀致密的高亮度荧光膜的细小荧光体颗粒的方法，当用于例如荧光体。阴极射线管，荧光灯，PDP由于其高度结晶，具有低的凝聚含量，并且包括细颗粒，并且具有高纯度，均匀的化学组成和优异的发光特性。解决方案：在通过将含荧光体构成金属的溶液喷射到夹带空气中以形成液滴的方法中，干燥液滴以形成固体荧光体材料颗粒，并加热材料颗粒以形成荧光体的前体，通过前体的路线产生荧光体颗粒，上述加热在其中前体与对磷光体具有化学惰性的熔融介质接触的状态下继续进行，以从漂浮在磷光体中的荧光体形成分散状态的多个颗粒夹带气体。

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