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1. 发明专利

JP2001096149A POROUS ADSORBENT AND FILTER 失效
公开(公告)号：JP2001096149A
公开(公告)日：2001-04-10
申请号：JP28153199
申请日：1999-10-01
申请人： KURARAY CHEMICAL KK
发明人： FUKUNISHI YOSHIHARU , TAJIMA YASUHIRO , NISHIMURA NOBUYUKI , FUKUURA MASAKI , OKADA TERUHIRO
IPC分类号： A61L9/16 , A61L9/01 , B01D53/04 , B01J20/22
摘要： PROBLEM TO BE SOLVED: To provide a porous adsorbent and a filter capable of efficiently removing lower aldehydes at ordinary temperature and excellent in heat resistance, safety, and stability of the adsorptive capability. SOLUTION: The porous adsorbent is an adsorbent obtained by depositing an urea compound having ureid bond in a molecule in a porous carrier and molding the carrier. The filter is filter for air cleaning obtained by molding a porous adsorbent produced by depositing aniline as the urea compound and salts of transition metals in a porous carrier of such as an activated carbon.

2. 发明专利

JPH0857306A ISOTHIOCYANIC ESTER DEODORANT AND DEODRIZING DEVICE 失效
公开(公告)号：JPH0857306A
公开(公告)日：1996-03-05
申请号：JP22430394
申请日：1994-08-24
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO
IPC分类号： A61L9/01 , B01D53/86 , B01J20/06 , B01J20/20
摘要： PURPOSE: To obtain an isothiocyanic ester deodorant having an excellent deodorizing effect especially to allyl isothiocyanate, securing the high safety and easy to handle by adding cerium oxide or cerium oxide and other metal oxide to a porous material such as activated carbon. CONSTITUTION: Cerium oxide or cerium oxide and one or more kinds of metal oxides such as oxides of V, Mn, Cu, Fe and Mo are added to a porous material such as the activated carbon to obtain the objective isothiocyanic ester deodorant. Cerium oxide is preferably added by 0.5-30 parts per 100 parts of the porous material. When an isothiocyanic ester deodorizing filter is assembled, nonwoven fabrics 4 are joined to a honeycomb substrate 2 with cobwebby adhesive sheets 5 by hot pressing or other method, the isothiocyanic ester deodorant 3 is uniformly sprinkled on the fabrics 4 and adhesive sheets 5 are put, on the deodorant 3 and hot-pressed.

3. 发明专利

JPH09308830A AGENT FOR REMOVING ACIDIC GAS AND BASIC GAS 失效
公开(公告)号：JPH09308830A
公开(公告)日：1997-12-02
申请号：JP15031496
申请日：1996-05-21
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO , FUKUNISHI YOSHIHARU , OTSUKA KIYOTO
IPC分类号： B01D53/38 , B01D53/81 , B01D53/86 , B01J23/72 , C01B32/336
摘要： PROBLEM TO BE SOLVED: To have good functions as an oxidation catalyst even at room temperature and a high capacity to adsorb and remove sulfur compounds in principal offensive odor components and to effectively remove offensive odors from refuse disposal sites, stock raising facilities, and factories. SOLUTION: A agent for removing gas of offensive odors is obtained by a method in which copper (II) chloride or copper (II) chloride and oxide of at least one kind of metal selected from a group consisting of iron, chromium, nickel, cobalt, manganese, zinc, magnesium, and calcium are supported on active carbon. Preferable active carbon is obtained by a method in which a carbonaceous raw material is carbonated, and the product is activated in an atmosphere of water vapor content not exceeding 30vol.%, and is cooled to not exceeding 300 deg.C in the same atmosphere, or active carbon obtained by an ordinary method is heated at least 500 deg.C in nitrogen and/or carbon dioxide substantially not containing oxygen and/or water vapor and cooled to not exceeding 300 deg.C in the same atmosphere.

4. 发明专利

JPH09262273A ADSORBING REMOVER OF SULFUR COMPOUND 失效
公开(公告)号：JPH09262273A
公开(公告)日：1997-10-07
申请号：JP6202996
申请日：1996-02-22
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO , OTSUKA KIYOTO , NAKAYAMA AKINORI
IPC分类号： A61L9/01 , B01D53/38 , B01D53/81 , B01D53/86 , B01J20/20
摘要： PROBLEM TO BE SOLVED: To provide an adsorbing remover and a removing method capable of easily, safely and efficiently removing, for deodorization, numerous sulfuric odor substances such as methyl mercaptan, hydrogen sulfide, methyl sulfide, and methyl disulfide which are contained in gases having offensive odors. SOLUTION: An adsorbing remover is obtained for hydrogen sulfide, mercaptans, sulfides, and disulfides which are contained in gases by carrying cupric chloride or cupric chloride and oxides of iron, chrome, nickel, etc., in activated carbon. In this case, such activated carbon is desirable as obtained by carbonizing a carbonaceous material, activating in an atmosphere with less than 15% by volume of steam content, and then cooling to 300 deg.C or below in the same atmosphere, or by treating a normally obtained activated carbon at a temperature of about 500 deg.C or above in a nitrogen gas and/or carbon dioxide containing essentially no oxygen and/or steam and then cooling to 300 deg.C or below in the same atmosphere. Consequently, the remover is provided with a high function as an oxidation catalyst at room temperature, showing a superior catalytic performance and a high durability, particularly in the case of using an activated carbon obtained under specific conditions with a low steam content as a support.

5. 发明专利

JPH09113475A SENSITIVITY-DROP PREVENTIVE AGENT FOR COMBUSTIBLE-GAS SENSOR 失效
公开(公告)号：JPH09113475A
公开(公告)日：1997-05-02
申请号：JP29739095
申请日：1995-10-20
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO
IPC分类号： G01N27/12 , B01J20/10 , B01J23/40
摘要： PROBLEM TO BE SOLVED: To obtain a sensitivity-drop preventive agent, for a gas sensor, which is provided with the high adsorption and removal performance of a gas even at room temperature and whose removal function is not lowered even when moisture and carbon dioxide exist by a method wherein the compound of platinum and/or palladium in a specific weight ratio expressed in terms of a metal is carried by a inorganic porous substance. SOLUTION: In a sensitivity-drop preventive agent, for a combustible-gas sensor, to be used, the compound of platinum and/or palladium in 0.10 to 10.0wt.% expressed in terms of a metal is carried by an inorganic porous substance as a carrier. A ventilation port 2 into which the flows is formed in a sensor cap 3 at a combustible-gas sensor body 1, and the inside of a wire net cage 4 for holding of a combustible-gas sensitivity-drop agent is filled with particles as the combustible-gas sensitivity-drop agent 5. The air flows into from the ventilation port 2, it comes into contact with the particles, as the sensitivity-drop preventive agent 5, which are filled into its inside while the air is passed through the wire net cage 4, hydrogen, carbon monoxide and alcohol are adsorbed and removed, the air comes into contact with the combustible gas sensor 6, and the concentration of a hydrocarbon-based combustible gas which is contained in the air is detected without an error.

6. 发明专利

JPH09224564A FRESHNESS HOLDING METHOD FOR GREENGROCERY 失效
公开(公告)号：JPH09224564A
公开(公告)日：1997-09-02
申请号：JP6203096
申请日：1996-02-22
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO , OTSUKA KIYOTO
IPC分类号： A23B7/148 , B01J27/13
摘要： PROBLEM TO BE SOLVED: To provide the freshness holding method for greengrocery in a refrigerator or vegetable box, etc., by making good use of the oxidation catalysts of palladium chloride-carrying active carbon molded in a honeycomb shape by adding an organic binder to active carbon carrying palladium chloride. SOLUTION: Active carbon obtained by carbonizing a carbonic raw material, activating it in an atmosphere of >=15vol.% in vapor content, and cooling it down to =500 deg.C in gaseous nitrogen or/and carbon dioxide which does not contain oxygen and/or vapor substantially and then cooled down to ∼300 deg.C in the atmosphere. The palladium chloride-carrying active carbon is used which is molded in the honeycomb shape by adding 1-50 pts. organic binder to 100 pts. active carbon carrying 0.1-10 pts.% palladium chloride.

7. 发明专利

JPH0961391A HYDROGEN, CARBON MONOXIDE AND ALCOHOL REMOVING AGENT 失效
公开(公告)号：JPH0961391A
公开(公告)日：1997-03-07
申请号：JP24097595
申请日：1995-08-24
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO
IPC分类号： G01N27/12 , B01J20/10 , B01J23/44
摘要： PROBLEM TO BE SOLVED: To provide a hydrogen, carbon monoxide and alcohol removing agent usable as a prefilter for hydrocarbon combustible gas sensor by supporting a platinum or palladium compound in a specified quantity in metal equivalent in an inorganic porous material having a specified particle size. SOLUTION: This agent is formed by supporting 0.01-10.0wt.% of a platinum or palladium compound in metal equivalent in an inorganic porous material. The particle size of the inorganic porous material is preferably set to be from 0.1mm to 2mm from the viewpoints of filling property to gas sensor vicinity part, contact property with gas, and pressure loss. Further, platinum amine complex and chloroplatinic acid as the platinum compounds and palladium amine complex and palladium chloride as the palladium compounds are preferably used. This removing agent is used to remove the hydrogen, carbon monoxide and alcohol vapor contained in the atmosphere in order to prevent the erroneous operation of a gas sensor, and the surface of the removing agent is preferably made hydrophobic. Further, the surface of the removing agent is preferably reformed to acidic.

8. 发明专利

JPH0924272A SELF-REGENERATION TYPE ADSORBENT 失效
公开(公告)号：JPH0924272A
公开(公告)日：1997-01-28
申请号：JP19918395
申请日：1995-07-11
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO
IPC分类号： A61L9/01 , B01D53/02 , B01J20/18 , B01J20/34
摘要： PROBLEM TO BE SOLVED: To demonstrate the sufficient adsorption against a malodorous component by containing a platinum and/or palladium component and hydrophobic zeolite having specified values of silica/alumina molar ratio and the specific surface respectively and also recover the adsorption properties by heating the adsorbed malodorous component. SOLUTION: This self-regeneration type adsorbent is prepared by coating an electric heating medium with hydrophobic zeolite having the silica/alumina molar ratio of 70 or over and the specific surface of 500m /g or more, on which a platinum and/or palladium component is carried, or a mixture of some other porous substance, on which a metal component of the above-said hydrophobic zeolite is carried, with hydrophotic zeolite. As the hydrophotic zeolite is contained in the adsorbent, high adsorption properties are demonstrated to a slight supply amount of ammonia or the like as a malodorous component even under the atmosphere containing the water content. A malodorous substance is removed by the catalyst action of a platinum and/or palladium component and the oxidization generated by the adsorption properties of a porous substance by heating every given hours.

9. 发明专利

JPH08994A METAL OXIDE ADSORPTIVE ACTIVATED CARBON 失效
公开(公告)号：JPH08994A
公开(公告)日：1996-01-09
申请号：JP16325194
申请日：1994-06-21
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO
IPC分类号： A61L9/01 , B01D53/86 , B01J20/20 , B01J23/10 , B01J23/34 , B01J23/648 , B01J23/72 , B01J35/04
摘要： PURPOSE:To produce activated carbon which can deodorize a gas containing vapor of an isothiocyanic ester within a short time by carbonizing a carbonaceous raw material after forming the material into particles, activating the resultant material in an atmosphere containing steam at a specified content or less, and then cooling the material to a specified temperature or lower while keeping the atmosphere as it is, and making the material carry cerium oxide at a specified ratio. CONSTITUTION:A carbonaceous raw material is formed into a granular or honeycomb or fibrous shape and carbonized, the resultant material is activated in an atmosphere containing steam within 15vol.% content, and after that, the material is cooled to 300 deg.C to lower while the atmosphere being kept as it is and mode to carry 0.1-20wt.% of cerium oxide solely or cerium oxide together with other metal oxides (e.g. an iron oxide). The activated carbon produced in this way has excellent properties to adsorb and remove malodor of an isothiocyanic ester in a gas phase. For this season, the activated carbon is suitable as a deodorizing agent for the isothiocyanic ester, and which is used as a sterilizing agent in the case domestic electronic appliances are stored in a warehouse. The activated carbon can also be used as a general deodorizing agent.

10. 发明专利

JPH09192485A ACTIVATED CARBON MOLDED BODY CARRYING METAL OXIDE 失效
公开(公告)号：JPH09192485A
公开(公告)日：1997-07-29
申请号：JP5268196
申请日：1996-01-22
申请人： KURARAY CHEMICAL KK
发明人： TAJIMA YASUHIRO , OTSUKA KIYOTO
IPC分类号： B01D53/86 , B01J20/20 , B01J21/18 , B01J23/02 , B01J23/06 , B01J23/16 , B01J23/34 , B01J23/70 , B01J23/745 , B01J23/75 , B01J23/755 , B01J23/80 , B01J23/86 , B01J23/889 , B01J32/00 , C01B31/08
摘要： PROBLEM TO BE SOLVED: To obtain an activated carbon molded body having high function as an oxidation catalyst at ordinary temp. or low temp. even in the case of a very low concn. of malodorous gas by carrying a specified amt. of a metal oxide on activated carbon obtd. through specified processes, adding a binder and molding them in a honeycomb shape. SOLUTION: Oxides of one or more kinds of metals selected from among Fe, Cr, Ni, Co, Mn, Zn, Cu, Mg and Ca are carried by 0.1-20wt.% on activated carbon obtd. by carbonizing carbonaceous stock, activating the resultant carbon in an atmosphere having =500 deg.C in gaseous nitrogen and gaseous CO2 not contg. oxygen or steam and cooling the treated carbon to

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