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公开(公告)号：JPH0891830A
公开(公告)日：1996-04-09
申请号：JP23125294
申请日：1994-09-27
Applicant: AGENCY IND SCIENCE TECHN , CERAMICS SUIKASO SEIKEI GIJUTS
Inventor： SHIBAZAKI YASUO , ODA KIICHI , SANO SABURO , MAEDA MASAKI , TAMURA MINORU , ICHIKAWA YUKARI , KOIZUMI KENICHI , FUKAKUSA HISAYUKI , TAKENAKA HIDEO
IPC: C01F7/02
Abstract: PURPOSE: To obtain high plasticity alumina particles useful as a material excellent in heat resistance, electric insulating property and mechanical strength and giving a high density compact by forming a specified compd. on the surfaces of α-alumina particles. CONSTITUTION: An aluminate compd. is formed on the surfaces of α-alumina particles, preferably hexagonal platy particles, especially preferably particles each having
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公开(公告)号：JPH07331110A
公开(公告)日：1995-12-19
申请号：JP15178394
申请日：1994-06-10
Applicant: AGENCY IND SCIENCE TECHN , YOSHIDA KOGYO KK
Inventor： SHIBAZAKI YASUO , ODA KIICHI , SANO SABURO , MAEDA MASAKI , MATSUO YOJI
Abstract: PURPOSE:To prepare a flaky alumina pigment which has good coatability and high-temp. stability and is useful as a pigment for coating materials and potteries by treating the surface of a flaky alumina pigment with a particular metal or metallic compd. CONSTITUTION:A flaky alumina pigment comprising a flaky alumina and a color compd. metal oxide reacted with and present on the surface of the flaky alumina. This flaky alumina pigment is prepd. by coating a flaky alumina with a metal or a metallic compd. capable of reacting with alumina to develop a color and calcining the coated flaky alumina at a high temp. Pref., the flaky glumina has a particle diameter of 0.1 to 20mum and an aspect ratio of 2 to 50. The color compd. metal oxide is a compd. comprising alumina and a metal oxide excluding alumina. The metal oxide is at least one member selected from oxides of Mg, Zn, Mn, Ni, Co, Ti, Fe, Cr, Cu, and V. The color metal oxide is pref. of a spinel crystalline structure.
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公开(公告)号：JPH04114913A
公开(公告)日：1992-04-15
申请号：JP23023090
申请日：1990-08-31
Applicant: AGENCY IND SCIENCE TECHN , JINKOU NENDO GOUSEI GIJIYUTSU
Inventor： SHIBAZAKI YASUO , MIYAWAKI RITSURO , MAEDA MASAKI , OSAKI YASUSHI , INAOKA WATARU , SAMEJIMA SOICHIRO , SATOKAWA SHIGEO
Abstract: PURPOSE:To obtain a high-purity kaolinite-like mineral at low temperature in a short time in production by hydrothermal synthesis by blending an aqueous solution of sodium silicate with an aqueous solution of aluminum sulfate at a specific pH, subjecting the resulting substance to ion exchange for ammonium ion, burning to give a gel and using the gel as a raw material. CONSTITUTION:An aqueous solution of sodium silicate is uniformly blended with an aqueous solution of aluminum sulfate while maintaining at pH 4-12 to give a mixed gel of silica and alumina. Then, the gel, for example, is dispersed into five times as much solution of ammonium nitrate as sodium and Na in the subjected to ion exchange for ammonium ion. Then the gel is burnt at 600 deg.C for 1 hour to remove ammonium subjected to ion exchange. This prepared raw material gel is fed to an autoclave so as to give 5wt.% slurry concentration, subjected to hydrothermal treatment at 220 deg.C for 3 days, cooled, washed with water, filtered and dried to give a kaolinite-like mineral, a reaction product.
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公开(公告)号：JPH04114912A
公开(公告)日：1992-04-15
申请号：JP23022990
申请日：1990-08-31
Applicant: AGENCY IND SCIENCE TECHN , JINKOU NENDO GOUSEI GIJIYUTSU
Inventor： SHIBAZAKI YASUO , MIYAWAKI RITSURO , MAEDA MASAKI , SATOKAWA SHIGEO , INAOKA WATARU , OSAKI YASUSHI , SAMEJIMA SOICHIRO
Abstract: PURPOSE:To obtain a high-purity kaolinite-like mineral at low temperature in a short time in production by hydrothermal synthesis by blending an aqueous solution of sodium silicate with an aqueous solution of aluminum sulfate at a specific pH and using the prepared gel as a raw material. CONSTITUTION:An aqueous solution of sodium silicate is uniformly blended with an aqueous solution of aluminum sulfate while maintaining at pH4-12 to give a mixed gel of silica and alumina. The gel is filtered and cleaned to remove by-products such as Na ion and sulfate ion. The gel is processed into 5% gel, fed to an autoclave, subjected to hydrothermal treatment at 220 deg.C for 5 days, cooled, washed with water, filtered and dried to give a kaolinite-like mineral, a reaction product.
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公开(公告)号：JP2001220127A
公开(公告)日：2001-08-14
申请号：JP2000024325
申请日：2000-02-01
Applicant: AGENCY IND SCIENCE TECHN , OMI KOGYO KK , NEW ENERGY & IND TECHNOLOGY DE
Inventor： WATAMURA SHINJI , MAEDA MASAKI , INUKAI KEIICHI , OHASHI FUMIHIKO , SUZUKI MASAYA , SATO HIROYASU , SAWADA TSUTOMU , ITAHARA HIROYUKI , KIMURA TATSUO
Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently refining an unused magnesium silicate ore by removing the carbonate-base impurity in the ore with an acid. SOLUTION: When a magnesium silicate ore containing carbonates as impurities is refined with an acid, an alkali halide solution is added to a solvent to prevent the magnesium silicate from being damaged, the 0.2-4.5 N acid is used in the amount equivalent to that of the carbonates to be dissolved, and the titration rate of the acid is controlled to
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Patent Agency Ranking16.发明专利
公开(公告)号：JP2001064010A
公开(公告)日：2001-03-13
申请号：JP24256599
申请日：1999-08-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SUZUKI MASAYA , OHASHI FUMIHIKO , INUKAI KEIICHI , MAEDA MASAKI , WATAMURA SHINJI
Abstract: PROBLEM TO BE SOLVED: To provide a method for synthesizing a tubular aluminum silicate inexpensively, safely and in a large quantity, applicable for a fuel storage material, an autonomous humidity control material, a deodorizing material, an organic contaminant adsorbing material or the like. SOLUTION: The objective high purity tubular aluminum silicate is produced by forming a precursor from a solution prepared by mixing an inorganic silicon compound solution having 1-500 mmol concentration with an inorganic aluminum compound solution having 1-1,000 mmol concentration to be a prescribed silicon/ aluminum molar ratio and, after removing coexisting ions to reduce the concentration of the ions in the solution, the aging by heating and recovering and cleaning the formed and deposited solid portion. The tubular aluminum silicate is synthesized more inexpensively, safely and in a large quantity compared to the conventional method.
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公开(公告)号：JP2000317252A
公开(公告)日：2000-11-21
申请号：JP12702699
申请日：1999-05-07
Applicant: AGENCY IND SCIENCE TECHN , YKK CORP
Inventor： MAEDA MASAKI , OHASHI FUMIHIKO , SUZUKI MASAYA , INUKAI KEIICHI , WATAMURA SHINJI , SHIBAZAKI YASUO , FUKUSHIMA KYOKO , AIKAWA KAZUO
Abstract: PROBLEM TO BE SOLVED: To inexpensively produce an antibacterial porous structure by coprecipitating metal ions having antibacterial properties at the time of precipitating a hydroxide by adjusting the hydrogen ion concn. of a metal salt aq. soln. with an alkaline soln. and heat treating the hydroxide gel obtained by agitating the coprecipitated matter in hot water bath. SOLUTION: In the case of producing a moisture regulating material having the function of preventing the propagation of bacteria etc., even under the wet condition in which steam is absorbed, a gal in which the hydroxide is uniformly dispersed is prepared by executing, for example, a treatment such as agitation in a hot water bath after adjusting the aq. soln. to the hydrogen ion concn. at which the hydroxide is precipitated by adding a hydrogen ion concn. adjusting agent the metal salt aq. soln. containing the metal ion having antibacterial properties. The gel is converted to a porous oxide by causing a dehydration reaction by keeping the gel at a prescribed temp. for a prescribed time after drying the gel in a thermostatic bath of 100 deg.C, for example. The porous material is obtained by executing particle size adjustment by mechanical crushing by using, for example, a mortar etc., and by sifting etc., and by executing washing treatment etc., at need after the heat treatment.
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公开(公告)号：JP2000189744A
公开(公告)日：2000-07-11
申请号：JP61199
申请日：1999-01-05
Applicant: AGENCY IND SCIENCE TECHN , YKK CORP
Inventor： MAEDA MASAKI , SUZUKI MASAYA , OHASHI FUMIHIKO , INUKAI KEIICHI , WATAMURA SHINJI , SHIBAZAKI YASUO , FUKUSHIMA KYOKO , AIKAWA KAZUO
IPC: B01D53/28
Abstract: PROBLEM TO BE SOLVED: To provide the inexpensive production method of the moisture regulating material exhibiting the autonomous moisture regulating function usable over a long period of time. SOLUTION: A porous oxide is produced by precipitating hydroxide by adjusting the hydrogen ion concn. of metallic salt aq. soln. with ammonia aq. soln. etc., and subjecting the hydroxide gel obtained by agitating the hydroxide in a hot water bath to heat treatment. In this way, the moisture regulating function is exhibited by autonomously executing the absorption and emission of steam under the humidity condition of about 50-70% relative humidity. Then the autonomous moisture regulating function repeatedly usable over a long period of time is supplied.
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公开(公告)号：JPH1129373A
公开(公告)日：1999-02-02
申请号：JP20252297
申请日：1997-07-10
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MAEDA MASAKI , WATAMURA SHINJI , INUKAI KEIICHI , OHASHI FUMIHIKO , SUZUKI MASAYA , SHIBAZAKI YASUO
Abstract: PROBLEM TO BE SOLVED: To inexpensively obtain interior wall material that can prevent dew condensation, secure the comfortable space by controlling the humidity indoor and has antifungal properties by molding and calcining a plastic kaolinite mineral and making it porous by soaking it in an alkali solution. SOLUTION: Kaolinite mineral is adjusted in its particle size, for example, less than 30 mesh, preferably 70 mesh, molded, calcined, peferably at 900-1,100 deg.C for 1-24 hours to effect the phase separation into the alumina phase and the amorphous silica phase, then soaked in an alkali solution of strong alkalinity (for example, KOH solution), for example, at 50-90 deg.C for 12-48 hours thereby selectively dissolving the alkali-soluble components as the amorphous silica and the like to a porous form, washed, dried thereby producing a porous structure body. In another embodiment, a suspension of kaolinite mineral is sprayed to the surface of an unglazed pottery in a suitable shape to form the surface layer of the kaolinite, the calcined in a similar manner and treated with alkali.
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公开(公告)号：JPH09294931A
公开(公告)日：1997-11-18
申请号：JP13440096
申请日：1996-04-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OHASHI FUMIHIKO , WATAMURA SHINJI , MAEDA MASAKI , INUKAI KEIICHI , SHIBAZAKI YASUO
Abstract: PROBLEM TO BE SOLVED: To provide a porous material which has good water resistance, heat resistance, and corrosion resistance and keeps the humidity of living environment optimum in an energy saving manner by absorbing/desorbing water in a living space autonomously. SOLUTION: A humidity conditioning material is composed of a composition of a porous material having an autonomous humidity conditioning function. The composition which is formed using an organic substance having a surfactant or a long chain alkyl group as a casting mold is made from one or more kinds of substances selected from a group consisting of aluminosilicate and transition metal elements. The porous material is prepared by a process in which an organic substance having a surfactant or a long chain alkyl group, after being enclosed with silicon dioxide or transition metal oxide, is polymerized, and the product is burned or extracted to remove the organic substance. The average diameter of the pores is 2-6nm, and the material has an autonomous humidity conditioning function at a relative humidity of 40-70%.
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