Kawasaki, Japan
Kawasaki, Japan

Asahi Kasei Corporation is a global Japanese chemical company. Its main products are chemicals and materials science. It was founded in May 1931, using the paid in capital of Nobeoka Ammonia Fiber Co., Ltd, a Nobeoka, Miyazaki based producer of ammonia, nitric acid, and other chemicals. Now headquartered in Tokyo, with offices and plants across Japan, as well as China, Singapore, Thailand, U.S.A. and Germany.The company is listed on the first section of Tokyo Stock Exchange and is a constituent of the TOPIX 100 and Nikkei 225 stock market indices. Wikipedia.

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Patent
Asahi Kasei Corporation | Date: 2017-05-17

A blood processing filter for removing undesirable components from liquid containing a blood component or blood, comprises a sheet-shaped filter element and a hard container that includes an inlet-side container element and an outlet-side container element that are disposed to clamp the filter element, and has an internal space separated by the filter element into an inlet space and an outlet space, wherein the filter element includes a pair of filtering surfaces disposed on the inlet space side and the outlet space side, the inlet-side container element and the outlet-side container element are provided with a gripper that clamps and compresses outer edge portions of the pair of filtering surfaces, the filter element is compressed to have a thickness of a portion clamped by the gripper being 0.05 times or more and 0.5 times or less larger, and the hard container is provided with a steam-permeable portion having steam permeability.


Patent
Asahi Kasei Corporation | Date: 2017-05-17

A blood processing filter for removing undesirable components from liquid containing a blood component or blood, comprises a sheet-shaped filter element, and a container that includes an inlet-side container element and an outlet-side container element that are disposed to clamp the filter element, and has an internal space separated by the filter element into an inlet space and an outlet space. The filter element includes a pair of filtering surfaces disposed on the inlet space side and the outlet space side, and an end surface along a periphery of the pair of the filtering surfaces, and the inlet-side container element and the outlet-side container element are provided with a gripper that clamps and compresses outer edge portions of the pair of filtering surfaces, and adheres to the end surface with melt resin, and a part of the container is provided with a steam-permeable portion having steam permeability.


Patent
Asahi Kasei Corporation | Date: 2017-05-17

A non-aqueous lithium-type power storage element obtained by a non-aqueous liquid electrolyte and an electrode laminate having a negative electrode body, a positive electrode body, and a separator being accommodated in an exterior body, wherein: the negative electrode body contains a negative electrode current collector and a negative electrode active material including a carbon material capable of occluding and releasing lithium ions; the negative electrode active material is selected from composite porous materials in which a carbonaceous material is caused to adhere to activated carbon and composite porous materials in which a carbonaceous material is caused to adhere to carbon black, and is doped with lithium ions at 530-2500 mAh/g per unit weight of the composite porous material; the non-aqueous electrolytic solution contains 0.5 mol/L or more of a lithium salt; and an extract obtained by extracting a negative electrode active material layer using water contains (a)SO_(3)^(2-) ions and/or (b)SO_(4)^(2-) ions in a range of 3.0 10^(-8) to 5.0 10^(-6) mol/m^(2) per unit surface area of the negative electrode active material layer.


Patent
Asahi Kasei Corporation | Date: 2017-05-17

An object of the present invention is to provide a membrane distillation apparatus having a high water treatment capability as well as being compact in size. The present invention provides a membrane distillation apparatus that comprises an evaporation part comprising a liquid phase part 1 in which water to be treated flows, a gas phase part 1, and a hydrophobic porous membrane that separates the liquid phase part 1 and the gas phase part 1, a condensation part comprising a liquid phase part 2 in which cooling water flows, a gas phase part 2, and a cooling member that separates the liquid phase part 2 and the gas phase part 2, and a gas phase part 3 connecting the gas phase part 1 with the gas phase part 2, wherein the pressure of the gas phase parts 1 to 3 is 1 kPa or higher and the saturated steam pressure of water at the temperature of water to be treated or lower. The present invention also provides a hydrophobic porous membrane having a surface porosity of a membrane surface that comes into contact with water to be treated of 20% or more and an air permeation coefficient of 8.0 10^(-7) m^(3)/m^(2)secPa or more.


Patent
Asahi Kasei Corporation | Date: 2017-09-13

A hollow fiber filtration membrane in which even when a relatively small contaminant having a size close to that of a permeation effective component is present in a filtration solution, Flux decrease over time during filtration is suppressed, and a useful component can be efficiently recovered, the hollow fiber filtration membrane being a hollow fiber filtration membrane comprising a polysulfone-based polymer and a hydrophilic polymer and having a large number of pores, the hollow fiber filtration membrane having a gradient asymmetric porous structure in which an average pore diameter of the pores increases from an outer surface portion toward an inner surface portion of the membrane, a content of the hydrophilic polymer of the membrane being from 6.0 to 10.0% by mass, a ratio between a content of the hydrophilic polymer at the inner surface portion and the content of the hydrophilic polymer of the membrane being in the range of from 0.50 to 0.80.


Patent
Asahi Kasei Corporation | Date: 2017-09-13

The present invention relates to a sensor device which has high S/N and excellent temperature characteristics. A sensor device (100) has a semiconductor substrate (101), a first metal wiring layer (111) provided on the semiconductor substrate (101), a first insulating layer (121) provided on the first metal wiring layer (111), a compound semiconductor sensor element (131) provided on the first insulating layer (121), a second metal wiring layer (112) provided on the compound semiconductor sensor element (131) and the first insulating layer (121), and a second insulating layer (122) provided on the second metal wiring layer (112). A third insulating layer (123) is provided between the first metal wiring layer (111) and the second metal wiring layer (112), and the compound semiconductor sensor element (131) is provided in the third insulating layer (123).


Patent
Asahi Kasei Corporation | Date: 2017-09-20

Provided is a perforated plastic film comprising a plastic film having a large number of through holes, and the perforated plastic film has a moisture permeability of 300 to 3500 g/m^(2)24 h and has a low skin irritation potential.


Patent
Asahi Kasei Corporation | Date: 2017-09-20

A method for producing a polyolefin-based porous film includes an (A) step: a raw fabric forming step for forming a non-porous raw fabric from a polyolefin-based resin composition, a (B) step: an MD cold stretching step for cold stretching the non-porous raw fabric obtained in the (A) step at a temperature of -20C to (Tm-30) C (Tm is a melting point (C) of the non-porous raw fabric) in an extruding direction (MD) of the raw fabric to make the raw fabric porous; a (D) step: a TD cold stretching step for cold stretching a film processed in the (B) step in a direction (TD) perpendicular to the MD, and an (H) step: a thermal fixing step, in the above order. A thermal fixing temperature T_(2) (C) in the (H) step satisfies expressions (1) and (2) below; T_(2) > T_(1) (1), (Tm-3) T_(2) (Tm-40) (2) (in the expressions, T_(1) represents a stretching temperature (C) in the (D) step, and Tm represents the melting point (C) of the non-porous raw fabric).


Patent
Asahi Kasei Corporation | Date: 2017-09-13

Provided are: a resin-containing sheet in which not only the mechanical strength of a cellulose nanofiber nonwoven fabric but also the flexural resistance of a substrate are improved; and a structure and a wiring board which include the same. The resin-containing sheet includes: a specific cellulose nanofiber nonwoven fabric (11); a fixing agent (2) which fixes together fibers (1) in the cellulose nanofiber nonwoven fabric (11); and a resin (3) which is in contact with the cellulose nanofiber nonwoven fabric (11) and the fixing agent (2), wherein the storage modulus of the fixing agent (2) is higher than that of the resin (3). The structure is obtained by tightly adhering the resin-containing sheet to a substrate. The wiring board includes this structure.


Yoshino A.,Asahi Kasei Corporation
Angewandte Chemie - International Edition | Year: 2012

The moment of truth: The lithium-ion battery is currently the predominant power source for mobile phones, laptop computers, and many other portable electronic devices, and is being used increasingly in electric vehicles. Its inventor, A. Yoshino, describes the process by which the lithium-ion battery was first developed (picture shows the first test-tube cell) and made commercially practical. Successful safety tests marked the turning point in this work. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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