Asahi Kasei Kabushiki Kaisha

Celgard Inc.

Shinya Hamasaki

Toshihiro Suzuki

Kenji Takasa

Yuuichi Arito

Hitoshi Mizomoto

Yusuke Shigemori

Masaki Takahashi

Masato Murakami

Changqing Wang Adams

Yoshiyuki Ishii

Kenji Ebara

Asami Ohashi

Mitsuko Saito

Fumihiko Yamaguchi

Takahiko Kondo

Taku Suetomi

Hirofumi Miura

Tsumoru Kuwabara

Junichi Shishido

Michiko Shimoyamada

Kazunori Uchida

Fumiaki Ozaki

Shohei Mori

Takena Mochizuki

Problem: The invention provides a separator for a lithium-ion secondary battery exhibiting excellent strength, wettability with nonaqueous electrolyte solutions, voltage endurance and cycle characteristics in lithium-ion secondary batteries, and a method of increasing the puncture depth of the separator. Solution: A separator for a lithium-ion secondary battery is formed of a microporous film comprising a polyolefin resin (A) as a major component, and a resin (B), at least portions of the surfaces of the micropores in the microporous film being coated with resin (B).

Separator for lithium-ion secondary battery

The present invention provides (I) a dry-stretched microporous membrane and a separator for an electric storage device excellent in balance among the required performances such as product safety, charge/discharge characteristics, dimension stability, energy cost, consideration to the environment, etc., (II) a separator for an electric storage device superior in product safety obtained by controlling a puncture depth of a microporous membrane comprised in the separator for an electric storage device, or/and (III) a dry-stretched microporous membrane and a separator for an electric power storage device excellent in product safety realized by controlling a porosity and a puncture strength of a thin microporous membrane.

Separator for electric storage device

An electrolyte containing a non-aqueous solvent, a lithium salt (A) and at least one compound (B) selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2) and a compound having a constitutional unit represented by the following formula (3a) and a constitutional unit represented by the following formula (3b).

Electrolyte and lithium-ion secondary battery

A method of accurately separating immunoglobulin monomers by subjecting an immunoglobulin solution containing at least immunoglobulin monomers and immunoglobulin aggregates to cross-flow filtration using an ultrafiltration membrane, an ultrafiltration membrane module, and a cross-flow filtration apparatus. The method can separate immunoglobulin monomers by subjecting an immunoglobulin solution containing at least immunoglobulin monomers and immunoglobulin aggregates and having an immunoglobulin concentration of 1 to 150 g/L to cross-flow filtration using an ultrafiltration membrane having a molecular weight cut-off of 100,000 or more and less than 500,000 so that immunoglobulin monomers passes through the ultrafiltration membrane with a permeability of 80% or more while achieving a fractionation performance in which the permeability ratio of immunoglobulin dimers to immunoglobulin monomers that pass through the ultrafiltration membrane is 0.20 or less.

Method for separation of immunoglobulin monomers

[Problems] To provide a novel hydrophilized separation membrane for use in the treatment of a liquid, which comprises an aromatic ether polymer, is less likely to be degraded by sterilization with a high energy ray and has a controlled pore size and a high water permeability. [Means for Solving Problems] A porous separation membrane for use in the treatment of a liquid which is produced by a wet film formation process using an aromatic ether polymer and a hydrophilizing agent. The separation membrane can be used for medical purposes or in a pharmaceutical of food.

Separation membrane for use in treatment of liquid comprising aromatic ether polymer hydrophilized with hydrophilizing agent

A reflecting sheet of the invention is comprised of at least two, a surface layer portion and an inner layer portion, or more layers, and is characterized in that the surface layer portion contains at least a thermoplastic resin (C), the inner layer portion contains a thermoplastic resin (A), and at least one kind of thermoplastic resin (B) incompatible with the thermoplastic resin (A), reflected light intensity in a vertical direction has anisotropy by an incident direction when light is incident at an incident angle of 60 degrees with respect to the vertical direction of a plane of the reflecting sheet in the entire reflecting sheet including the surface layer portion and the inner layer portion, and that a ratio L/L, which is a ratio of reflected light intensity Lin the vertical direction in an incident direction Awhere the reflected light intensity in the vertical direction is the highest to reflected light intensity Lin the vertical direction in an incident direction Aorthogonal to the incident direction A, is 1.2 or more.

Reflecting sheet

A reflecting sheet of the invention includes at least a surface layer portion and an inner layer portion, where the surface layer portion contains at least 0.3 g/mto 20 g/mof an inorganic powder and a polyolefin resin (C), the inner layer portion contains a polyolefin resin (A) and at least one kind of resins (B) incompatible with the polyolefin resin (A) at temperatures enabling stretching of the polyolefin resin(A), the surface layer portion meets (n&#x2212;n)/n&#x2267;0.20 (n: refractive index of the inorganic powder, n: refractive index of the polyolefin resin (C)), and the inner layer portion has voids.

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Tokyo, Japan

Shinya Hamasaki