Kuraray Chemical Co., Ltd.
|Kuraray Chemical Co., Ltd. Patent applications|
|Patent application number||Title||Published|
|20150287545||CARBON MATERIAL FOR POLARIZABLE ELECTRODES AND METHOD FOR PRODUCING SAME - There is provided a carbon material for polarizable electrodes in which a heterocyclic aromatic compound is adsorbed on an activated carbon, wherein the heterocyclic aromatic compound comprises a five- or six-membered ring having two or more nitrogen atoms as ring-forming atoms; a ratio (N/C) of nitrogen atoms to carbon atoms in the heterocyclic aromatic compound is 0.4 or more; 1 to 35 parts by mass of the heterocyclic aromatic compound is adsorbed based on 100 parts by mass of the activated carbon; and the carbon material for polarizable electrodes has a benzene adsorption capacity of 25 to 75% by mass.||10-08-2015|
|20150270072||CARBONACEOUS MATERIAL FOR NEGATIVE ELECTRODES OF LITHIUM ION CAPACITORS AND METHOD FOR PRODUCING SAME - The object of the present invention is to provide a manufacturing method of carbonaceous material for a negative electrode of lithium ion capacitors, wherein the carbonaceous material is obtained from plant-derived char as a source, potassium and iron are sufficiently removed, and an average particle diameter thereof is small; and a carbonaceous material for a negative electrode of lithium ion capacitors.||09-24-2015|
|20150266751||WATER PROCESSING FILTER AND MANUFACTURING METHOD THEREFOR - A water-processing filter having a high dimensional accuracy and an improved filterability (such as a capability to remove turbidity components) is provided. The water-processing filter comprises (A) a hollow cylindrical filter which comprises (a1) a granular activated carbon having a median particle size of 30 to 80 μm and (a2) a fibrillated fibrous binder. The cylindrical filter (A) has an upstream outer surface having an arithmetical mean deviation of a waviness profile adjusted to not more than 30 μm and an arithmetical mean deviation of a primary profile adjusted to 35 to 45 μm. The cylindrical filter (A) may have a downstream inner surface having an arithmetical mean deviation of a waviness profile of not more than 30 μm and an arithmetical mean deviation of a primary profile of 35 to 45 μm. The cylindrical filter (A) may have a grounded outer surface. In a hollow space of the cylindrical filter (A), (B) a cylindrical filter comprising (b1) a granular activated carbon having a median particle size of 30 to 80 μm and (b2) a granular binder may be disposed.||09-24-2015|
|20150263347||CARBON MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME, AND NEGATIVE ELECTRODE USING CARBON MATERIAL AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity (discharge capacity), non-dedoping capacity (irreversible capacity), and charge-discharge efficiency.||09-17-2015|
|20150190781||ACTIVATED CARBON FOR NOBLE METAL ADSORPTION, NOBLE METAL ADSORPTION FILTER, AND METHOD FOR RECOVERING NOBLE METALS - In an activated carbon for adsorbing a noble metal from an aqueous solution containing the noble metal, the difference (absolute value) between a zeta-potential in a 10 mmol/L aqueous solution of sodium tetraborate and a zeta-potential in a 0.01 mmol/L aqueous solution of sodium tetraborate is adjusted to not more than 18 mV and the pore volume of pores with a pore radius of not more than 1 nm is adjusted to 150 to 500 mm||07-09-2015|
|20130023405||ACTIVATED CARBON AND USE THEREFOR - An activated carbon having a high catalytic activity as an oxidation catalyst or a decomposition catalyst, and use therefor are provided.||01-24-2013|
|20120132578||MOLDED ACTIVATED CHARCOAL AND WATER PURIFIER INVOLVING SAME - The present invention provides molded activated carbon, and the molded activated carbon is produced by molding a mixture containing powdery activated carbon (a) having a median particle size of 80 μm to 120 μm and a standard deviation σg of 1.3 to 1.9 in a particle size distribution and a fibrous binder (b). The molded activated carbon of the present invention has excellent removability for free residual chlorine, volatile organic compounds, CAT, and 2-MIB and excellent turbidity filterability, and is for use as a water purifier cartridge or the like.||05-31-2012|
|20100212496||ADSORBENT, PROCESS FOR PRODUCING THE SAME, CANISTER AND METHOD FOR USING THE SAME - An object of the present invention is to provide an adsorbent suitable as an adsorbent for a canister which is capable of reducing an amount of evaporated fuel gas released into the atmosphere even where a motor vehicle is allowed to park for a prolonged period of time, a process for producing the adsorbent as well as a canister using the adsorbent and a method for using the canister. The above object can be accomplished by an adsorbent in which an integrated volume of pores having an average diameter of 3,000 to 100,000 nm as measured with a mercury porosimeter is 6.5 mL/dl or more and an equilibrium adsorption as measured in an n-butane volume concentration of 2,000 ppm is 0.16 g/dL or more, a process for producing the adsorbent, as well as a canister and a method for using the canister.||08-26-2010|
|20100113266||MERCURY ADSORBENT AND PROCESS FOR PRODUCTION THEREOF - The invention aims at providing a mercury adsorbent which is optimized in base activated carbon, sulfur amount carried, and heat treatment conditions, and is enhanced in mercury adsorption performance, and a process for producing the adsorbent, which can be put into industrial practice advantageously. The aim is attained by a mercury adsorbent made up of sulfur-carried activated carbon, with which sulfur is carried on activated carbon and which exhibits a sulfur peak top of the temperature of sulfur desorption at 534° C. to 537° C. in a calorimetric curve measured by a differential scanning calorimeter at a temperature rise rate of 10° C./minute under a nitrogen atmosphere, and a process for production of the adsorbent.||05-06-2010|
|20100074463||MATERIAL FOR SPEAKER DEVICE AND A SPEAKER DEVICE USING IT - A material for improving the sound pressure level at the bass reproduction limit of the present invention is composed of an activated carbon having a cumulative pore volume of 0.4 ml/g or more for the pores each having a radius of 50 angstroms or less. Preferably, this activated carbon has a cumulative pore volume of 0.1 ml/g or less for the pores each having a radius of 7 angstroms or less. In particular, when a sound pressure level improving material in which the activated carbon has a cumulative pore volume of 0.5 ml/g or more for the pores each having a radius of 18 angstroms or less is installed in a cabinet of a loudspeaker device, the material alleviates pressure fluctuations of a gas within the cabinet caused by vibration of a loudspeaker, and thus a very good bass reproduction effect is attained. Moreover, in the case where a sound pressure level improving material in which the activated carbon has a cumulative pore volume of 0.4 ml/g or more for the pores each having a radius of 18 to 50 angstroms is installed in the cabinet, a loudspeaker device having a good bass reproduction effect even in an atmosphere of high humidity is obtained.||03-25-2010|
|20090038477||EVAPORATED FUEL GAS ADSORBENT, EVAPORATED FUEL GAS TRAPPING APPARATUS, ACTIVE CARBON AND PROCESS PRODUCING THE SAME - The present invention provides an evaporated fuel gas adsorbent, an evaporated fuel gas trapping apparatus that uses the adsorbent, an activated carbon, and a process for producing the activated carbon. The evaporated fuel gas adsorbent is capable of improving adsorptivity and desorptivity by reliably preventing a temperature rise and a temperature fall caused by heat generated in response to the adsorption and desorption of evaporated fuel gas, is capable of achieving a size reduction of the device, and is capable of being easily produced. The activated carbon has high mechanical strength and high abrasive resistance, has many pores suitable to adsorb an organic solvent, especially, evaporated fuel gas, and has a high packing density. The activated-carbon producing process is industrially advantageous. The evaporated fuel gas adsorbent comprises an adsorptive material and latent heat storage mediums including containers each of which is made of a flexible film and in each of which a substance that absorbs or releases heat in response to a phase change is encased. The activated carbon is characterized in that a specific surface area calculated by a BET method (multipoint method) in a nitrogen adsorption isotherm determined from a nitrogen adsorption amount at liquid nitrogen temperature is 1000 to 2500 m||02-12-2009|
Patent applications by Kuraray Chemical Co., Ltd.