Abstract: A process for producing unsaturated nitrile comprising a reaction step of subjecting hydrocarbon to a vapor phase catalytic ammoxidation reaction in a fluidized bed reactor to produce the corresponding unsaturated nitrile, wherein, in the reaction step, a powder is fed to a dense zone in the fluidized bed reactor using a carrier gas, and a ratio of a linear velocity LV1 of the carrier gas at a feed opening to feed the powder to the fluidized bed reactor to a linear velocity LV2 of a gas in the dense zone (LV1/LV2) is not less than 0.01 and not more than 1200.
Abstract: An object of the present invention is to obtain a molded bale of a rubber composition that is difficult to cold flow and difficult to be thermally deteriorated. The present invention provides a molded bale of a rubber composition containing: a rubber-like polymer (A) having an iodine value of 10 to 250, 3% by mass or more of an ethylene structure, and less than 10% by mass of a vinyl aromatic monomer block; and aluminum (B), in which a content of the aluminum (B) is 2 ppm or more and 200 ppm or less.
Abstract: A polyolefin porous film is provided which has a film thickness of 1-30 ?m and an air permeability of at most 500 sec/100 cm3, and which has a 30% or higher porosity after compression, measured in a compression test under the conditions in which the temperature is 70° C., the pressure is 8 MPa and the compression time is 3 minutes.
Abstract: The present invention provides: a separator for lead acid storage batteries, the separator exhibiting excellent charge acceptance performance and excellent liquid loss characteristics when in use under PSoC, while being not susceptible to the occurrence of ply separation within a lead acid storage battery and having good ER; and a lead acid storage battery which uses this separator for lead acid storage batteries. The present invention provides a separator for lead acid storage batteries, the separator comprising a base material and a conductive layer that is superposed on at least one surface of the base material.
Type:
Application
Filed:
March 7, 2022
Publication date:
February 15, 2024
Applicant:
Asahi Kasei Kabushiki Kaisha
Inventors:
Juri Iwama, Yasuhito Iizuka, Tomonori Kiyama
Abstract: The method for industrially producing a dialkyl carbonate and a diol, in which the dialkyl carbonate and the diol are continuously produced through a reactive distillation system of taking a cyclic carbonate and an aliphatic monohydric alcohol as starting materials, comprising the steps of: continuously feeding the starting materials into a continuous multi-stage distillation column in which a homogeneous catalyst is present; carrying out reaction and distillation simultaneously in the column; continuously withdrawing a low boiling point reaction mixture containing the produced dialkyl carbonate in a gaseous form from an upper portion of the column; and continuously withdrawing a high boiling point reaction mixture containing the diol in a liquid form from a lower portion of the column, where the method satisfies specific requirements.
Abstract: Provided are a concentration method and system for concentrating a raw material solution, and in which a raw material solution containing a solute and a solvent is concentrated to obtain a concentrate of the raw material solution, wherein the solvent contains water and an organic solvent. In the method and system for concentrating a raw material solution, the system includes a combination of: a first concentrating means for removing water in the raw material solution by means of a forward osmosis method; and a second concentrating means for evaporating and removing water and an organic solvent in the raw material solution.
Abstract: Problem: The invention provides a polyimide precursor as well as a resin composition thereof that is excellent in coating properties of slit coating as well as productivity and also excellent in optical properties that are required for applications of flexible substrates. Solution: The polyimide precursor comprises a structure unit derived from a fluorene backbone and a silicon-containing structure unit, and a weight-average molecular weight of the polyimide precursor is 90,000 to 250,000.
Type:
Application
Filed:
October 5, 2023
Publication date:
February 8, 2024
Applicant:
ASAHI KASEI KABUSHIKI KAISHA
Inventors:
Takayuki KANADA, Masaki MAITANI, Toshiaki OKUDA
Abstract: A jig for laminate production for producing a laminate of an electrode for electrolysis and a membrane. The jig includes a roll for an electrode around which an elongate electrode for electrolysis is wound, and a roll for a membrane around which an elongate membrane is wound.
Abstract: Provided is a surface covering material such as a sheet for a seat in a vehicle or as furniture, or upholstery for a vehicle, said surface covering material having good cooling and anti-stuffiness properties, while being able to inhibit the creation of fluff even if the surface is rubbed by hard protrusions such as the hook part of a hook-and-loop fastener. The surface covering material of the present invention is configured from a three-dimensional knit that includes a front knit fabric, a back knit fabric, and a connecting layer composed of connecting yarn that connects the front knit fabric and the back knit fabric, said surface covering material being characterized in that the outside surface of the front knit fabric is set to be a surface that comes into contact with a human body, and the stitch density of the front knit fabric is 11,500-20,000, inclusive.
Abstract: A laminate includes an electrode for electrolysis and a membrane laminated on the electrode for electrolysis. The membrane has an asperity geometry on the surface thereof and a ratio a of a gap volume between the electrode for electrolysis and the membrane with respect to a unit area of the membrane is more than 0.8 ?m and 200 ?m or less.
Abstract: A production method for a branched conjugated diene-based polymer, comprising: a polymerizing step of obtaining a conjugated diene-based polymer having an active end by polymerizing or copolymerizing a conjugated diene compound, or a conjugated diene compound and an aromatic vinyl compound with an alkali metal compound or an alkaline earth metal compound used as a polymerization initiator; and a branching step of introducing a branch structure by reacting a styrene derivative as a branching agent with the active end of the conjugated diene-based polymer.
Abstract: Polyamide pre-expanded particles of this disclosure have a peak temperature of a maximum endothermic peak of 150-275° C. on a DSC curve obtained while being heated from 30° C. to 280° C. at a heating rate of 10° C./min using a DSC. The width of the peak is 30-80° C. when a straight line approximating the DSC curve on a high-temperature side relative to the peak after an end of melting is used as a baseline. The width corresponds to a difference between an extrapolated melting start temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a low-temperature side and the baseline, and an extrapolated melting end temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a high-temperature side and the baseline.
Abstract: A polyethylene powder having a viscosity average molecular weight of 100,000 or more and 2,500,000 or less, wherein, in a torque curve obtained when kneading the polyethylene powder under the following <Kneading Conditions> using a Labo Plastomill, a slope of a straight line connecting two local maximum points is 2 N·m/min or more and 15 N·m/min or less: <Kneading Conditions> After 24 g of liquid paraffin is kneaded for 10 minutes using a Labo Plastomill Mixer, produced by Toyo Seiki Seisaku-sho, Ltd. (unit model: 30C150, mixer model: R-60) at a set temperature of 114° C. and a rotation speed of 5 rpm, 16 g of the polyethylene powder and 0.4 g of an antioxidant are added thereto, followed by kneading at a rotation speed of 30 rpm for 3 minutes, and then the set temperature is raised from 114° C. to 163° C. over 1 minute; and after the temperature rise, the mixture is kneaded at a set temperature of 163° C. and a rotation speed of 30 rpm for 5 minutes.
Abstract: Provided is a crosslinking rubber composition containing: a rubber-like polymer (A) having an iodine value of 10 to 250 (g/100 g), comprising 3% by mass or more of an ethylene structure and less than 10% by mass of a vinyl aromatic monomer block, containing a nitrogen atom, and having a modification ratio measured by column adsorption GPC of 40% by mass or more; and a crosslinking agent (B).
Abstract: The present invention provides a method for producing a separator for lead acid storage batteries, said method comprising a surface layer formation step which includes: a coating liquid preparation step wherein a coating liquid that contains a solvent, a conductive material and a high-molecular-weight compound is prepared; a coating step wherein the coating liquid obtained in the coating liquid preparation step is applied to at least one surface of a separator base material; and a solvent removal step wherein the solvent is removed from the coating liquid that has been applied to the separator base material in the coating step. With respect to this method for producing a separator for lead acid storage batteries, the high-molecular-weight compound is contained in an amount of from 0.1% by mass to 25% by mass relative to the solid content of the coating liquid.
Abstract: An information processing method performed by an information processing apparatus, the method including: an item information acquisition step of acquiring item identification information that enables identification of a check target item, from a serial code attached to the check target item or image information on the check target item; an optical image acquisition step of acquiring optical image information about an optical image that is obtained from a fine line pattern attached to the check target item; and a checking step of checking ground truth information about a ground truth label of the optical image corresponding to the item identification information against the optical image information that is acquired, and generating a check result.
Abstract: A method for washing a filter is used in a seawater desalination process including a first filtration step for subjecting seawater to microfiltration or ultrafiltration, and a second filtration step for subjecting seawater after the first filtration step to a reverse osmosis treatment. The filter is a microfiltration membrane or ultrafiltration membrane used in the first filtration step. An iron compound is added to seawater in any stage in the washing method. The washing method includes a washing chemical liquid preparation step for preparing washing chemical liquid, and a sticking matter removal step for removing matter sticking to the filter by bringing the filter into contact with washing chemical liquid. In the washing chemical liquid preparation step, seawater after the first filtration step is mixed with at least hydrogen peroxide to prepare washing chemical liquid having an iron compound concentration of 1.50 mmol/L or more in terms of iron atoms.
Abstract: The purpose of the invention is to provide a heat insulating container capable of suppressing the deterioration of heat insulation performance even if the volume of an object stored is reduced. A heat insulating container 1 includes a storage space 13 formed by a bottom wall 11 and side walls 12, a container body 10 having an opening 14 continuous to the storage space 13, and a deformable plate-shaped lid 20. The lid 20 is configured such that at least a part thereof is deformed in a state of being inserted into the storage space 13 through the opening 14 of the container body 10 thereby to bring peripheral edges 21 thereof into close contact with the inner surfaces of the side walls 12 of the container body 10.
Abstract: An object of the present invention is to provide a conductive film that is excellent in flexibility while maintaining its sufficient transparency and conductivity, and a conductive film roll, an electronic paper, a touch panel, and a flat-panel display having the same. A conductive film having a transparent substrate and a conductive part having a fine metal wire pattern disposed on one side or both sides of the transparent substrate, wherein the fine metal wire pattern is constituted by a fine metal wire, and the conductive film satisfies the following condition (i) or (ii): (i) the fine metal wire has voids, and when the cross-sectional area of the fine metal wire is defined as SM and the total cross-sectional area of the voids included in the cross-section of the fine metal wire is defined as SVtotal on the cross-section of the fine metal wire perpendicular to the direction of drawing of the fine metal wire, SVtotal/SM is 0.10 or more and 0.
Type:
Grant
Filed:
July 30, 2019
Date of Patent:
January 16, 2024
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
Inventors:
Takeshi Kamijo, Sora Hida, Tetsuro Sugimoto, Yu Tomono
Abstract: The present invention provides an electrolyte membrane for a redox flow battery, comprising a perfluorocarbon polymer having an ion-exchange group, wherein the perfluorocarbon polymer has equivalent weight EW of the ion-exchange group of 600 g/eq or more and 2000 g/eq or less, a craze area ratio of the electrolyte membrane is 1.5% or less, and a relative dimension of the electrolyte membrane in at least one of a X direction and a Y direction is 80% or more and less than 100% in the following relative dimension by dipping in 2 M aqueous sulfuric acid solution.
Type:
Grant
Filed:
March 6, 2020
Date of Patent:
January 16, 2024
Assignee:
ASAHI KASEI KABUSHIKI KAISHA
Inventors:
Yuka Kanada, Junya Yamashita, Hiroko Kamochi, Kazuya Kai