Patents Assigned to Asahi Kasei E-Materials Corporation
  • Patent number: 10811659
    Abstract: An object is to provide a separator excellent in adhesiveness to electrodes and a separator for an electricity storage device also excellent in handling performance. A separator for an electricity storage device having a polyolefin microporous film and a thermoplastic polymer coating layer covering at least a part of at least one of surfaces of the polyolefin microporous film, in which the thermoplastic polymer coating layer, on the polyolefin microporous film, has a portion containing a thermoplastic polymer and a portion not containing the thermoplastic polymer in a sea-island configuration, the thermoplastic polymer coating layer contains the thermoplastic polymer having at least two glass-transition temperatures, at least one of the glass-transition temperatures is in a range of less than 20° C. and at least one of the glass-transition temperatures is in a range of 20° C. or more.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 20, 2020
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Miyazawa, Keitaro Ameyama, Takashi Shuto
  • Patent number: 10766169
    Abstract: To provide a resin mold which is excellent in adhesion to a substrate, excellent in release properties from a transfer material resin, further excellent in durability of the resin mold itself, and which endures repetition transfer to the transfer material resin, a resin mold of the invention is a resin mold having a fine concavo-convex structure on the surface, and is characterized in that the fluorine element concentration (Es) in a resin mold surface portion is the average fluorine element concentration (Eb) in the resin forming the resin mold or more.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: September 8, 2020
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Shinji Matsumoto, Jun Koike
  • Patent number: 10693114
    Abstract: 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 ?20° C. 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.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 23, 2020
    Assignee: Asahi Kasei E-materials Corporation
    Inventor: Miyuki Itou
  • Patent number: 10680223
    Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: June 9, 2020
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara
  • Patent number: 10578962
    Abstract: Provided is a self-supporting film that has an anti-reflection function independently, so that the self-supporting film exhibits excellent optical characteristics as a result. A self-supporting film has a rugged-structure layer having periodic rugged shapes formed on a surface thereof, with these periodic rugged shapes being formed on at least one surface. The average thickness of the self-supporting film ranges from 0.2 ?m to 20.0 ?m. The rugged-structure layer has a yield strain of 1% or greater and a tensile elongation of 10% or greater.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: March 3, 2020
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Seitaro Doi, Kenichiro Iwamura, Takuji Namatame
  • Publication number: 20190140242
    Abstract: An object is to provide a separator excellent in adhesiveness to electrodes and a separator for an electricity storage device also excellent in handling performance. A separator for an electricity storage device having a polyolefin microporous film and a thermoplastic polymer coating layer covering at least a part of at least one of surfaces of the polyolefin microporous film, in which the thermoplastic polymer coating layer, on the polyolefin microporous film, has a portion containing a thermoplastic polymer and a portion not containing the thermoplastic polymer in a sea-island configuration, the thermoplastic polymer coating layer contains the thermoplastic polymer having at least two glass-transition temperatures, at least one of the glass-transition temperatures is in a range of less than 20° C. and at least one of the glass-transition temperatures is in a range of 20° C. or more.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Applicant: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Miyazawa, Keitaro Ameyama, Takashi Shuto
  • Patent number: 10276849
    Abstract: A separator for nonaqueous electrolyte batteries having multilayer porous membrane, having a polyolefin microporous membrane and a porous layer having an inorganic filler, disposed on at least one side of the polyolefin microporous membrane, wherein, in pores with an area of 0.01 ?m2 or more in a cross section of the porous layer, the pores having an angle ? formed between a major axis of each pore and an axis in parallel with an interface between the microporous membrane and the porous layer in a range of 60°???120° occupying a proportion of 30% or more therein.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: April 30, 2019
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Yuki Uchida, Hiroshi Murata, Hiroshi Hatayama, Masaki Ishikawa
  • Patent number: 10246567
    Abstract: There is provided a polyolefin microporous film which is excellent in taking-up stability in a production line and a processing line of the polyolefin microporous film, and further in a line for a battery taking-up step, and hardly generates step deviation when a roll thereof has received an impact. The polyolefin microporous film has a compression elastic modulus of 0.1 to 1,000 kPa, and a ratio of a tensile elastic modulus in the longitudinal direction to a tensile elastic modulus in the transverse direction of 1.5 to 7.8.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: April 2, 2019
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Takashi Ikemoto, Yoshihiro Imamura
  • Patent number: 10211474
    Abstract: The problem addressed by the present invention is to obtain an electrolyte membrane that, as an electrolyte membrane for a redox flow secondary battery, is able to suppress the ion permeability of an active substance without detracting from proton (H+) permeability, has superior ion-selective permeability, has low electrical resistivity, and has superior current efficiency. The present invention solves the abovementioned problem by means of the electrolyte membrane for a redox flow secondary battery containing a perfluorocarbon sulfonic acid resin having a specific structure and an equivalent weight (EW), and the ion conductivity being adjusted to a predetermined range.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: February 19, 2019
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Akihiro Kato, Naoto Miyake
  • Patent number: 10189781
    Abstract: The onium salt of the present invention contains predetermined compound A represented by the general formula (1). The composition of the present invention contains the onium salt of the present invention, and an onium salt containing predetermined compound B represented by the general formula (2). The onium salt and the composition of the present invention exert well-balanced excellent physical properties in terms of cold curing properties, storage stability, thermal shock resistance after curing, and moisture resistance.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: January 29, 2019
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Tadashi Shimura, Naoya Kamimura, Akira Otani, Hitoshi Shimada
  • Patent number: 10153473
    Abstract: An object is to provide a separator excellent in adhesiveness to electrodes and a separator for an electricity storage device also excellent in handling performance. A separator for an electricity storage device having a polyolefin microporous film and a thermoplastic polymer coating layer covering at least a part of at least one of surfaces of the polyolefin microporous film, in which the thermoplastic polymer coating layer, on the polyolefin microporous film, has a portion containing a thermoplastic polymer and a portion not containing the thermoplastic polymer in a sea-island configuration, the thermoplastic polymer coating layer contains the thermoplastic polymer having at least two glass-transition temperatures, at least one of the glass-transition temperatures is in a range of less than 20° C. and at least one of the glass-transition temperatures is in a range of 20° C. or more.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 11, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Miyazawa, Keitaro Ameyama, Takashi Shuto
  • Publication number: 20180314159
    Abstract: A heat-reactive resist material contains copper oxide, and silicon or silicon oxide, and is formed so that the content of silicon or silicon oxide in the heat-reactive resist material is 4.0 mol % or more less than 10.0 mol % in terms of mole of silicon. A heat-reactive resist layer is formed using the heat-reactive resist material, is exposed, and then, is developed with a developing solution. Using the obtained heat-reactive resist layer as a mask, dry etching is performed on a substrate with a fluorocarbon to manufacture a mold having a concavo-convex shape on the substrate surface. At this point, it is possible to control a fine pattern comprised of the concavo-convex shape.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 1, 2018
    Applicant: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Yoshimichi MITAMURA, Takuto NAKATA
  • Publication number: 20180207841
    Abstract: To provide a resin mold which is excellent in adhesion to a substrate, excellent in release properties from a transfer material resin, further excellent in durability of the resin mold itself, and which endures repetition transfer to the transfer material resin, a resin mold of the invention is a resin mold having a fine concavo-convex structure on the surface, and is characterized in that the fluorine element concentration (Es) in a resin mold surface portion is the average fluorine element concentration (Eb) in the resin forming the resin mold or more.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Applicant: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Shinji MATSUMOTO, Jun KOIKE
  • Patent number: 9991488
    Abstract: 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 ?20° C. 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 T2 (° C.) in the (H) step satisfies expressions (1) and (2) below; T2>T1 (1), (Tm?3)?T2?(Tm?40) (2) (in the expressions, T1 represents a stretching temperature (° C.) in the (D) step, and Tm represents the melting point (° C.) of the non-porous raw fabric).
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: June 5, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventor: Miyuki Itou
  • Patent number: 9966583
    Abstract: Disclosed is a laminated polyolefin microporous membrane having a two-type three-layer structure in which first polyolefin microporous layers are surface layers and a second polyolefin microporous layer is an intermediate layer which is different from the first polyolefin microporous layer, in which at least one of the first polyolefin microporous layers and the second polyolefin microporous layer comprises a polypropylene-based resin in which a mass ratio of polypropylene to propylene copolymer is 0 or more and 2.29 or less, and a melting point of the polypropylene copolymer is 120° C. or higher and 145° C. or lower. Also disclosed is a method of making the same.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: May 8, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara
  • Patent number: 9941498
    Abstract: 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 ?20° C. 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.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: April 10, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventor: Miyuki Itou
  • Patent number: 9911959
    Abstract: A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 ?m, a tortuosity ?a=1.1 to 1.7, and the number B of pores=100 to 500 pores/?m2, which are calculated by a gas-liquid method, and the porous membrane has a membrane thickness L=5 to 22 ?m.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 6, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Murata, Hiroshi Hatayama, Yuki Uchida, Masaki Ishikawa
  • Patent number: 9911960
    Abstract: A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 ?m, a tortuosity ?a=1.1 to 1.7, and the number B of pores=100 to 500 pores/?m2, which are calculated by a gas-liquid method, and the porous membrane has a membrane thickness L=5 to 22 ?m.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 6, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Hiroshi Murata, Hiroshi Hatayama, Yuki Uchida, Masaki Ishikawa
  • Patent number: 9896546
    Abstract: A resin composition containing (A) a polyimide having acidic functional groups and (B) a compound having functional groups that react with the acidic functional groups, where (a) a solution rate in 3 mass % aqueous sodium hydroxide at 45° C. is 0.95 or more after a heat history of 90° C. for 10 minutes with the solution rate before the heat history assumed to be 1, (b) the solution rate in 3 mass % aqueous sodium hydroxide at 45° C. ranges from 0.001 ?m/sec to 0.02 ?m/sec after the heat history of 180° C. for 60 minutes, (c) a bleed-out amount is 50 mg/m2 or less in storing at 40° C. for 2 weeks after the heat history of 180° C. for 60 minutes, and (d) a thermogravimetric decrease at 260° C. is 2.0% or less in measuring on a temperature rising condition of 10° C./min from 40° C. by thermogravimetric analysis (TG).
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: February 20, 2018
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Koichiro Shimoda, Yasuhito Iizuka, Masaki Yamamoto, Yoro Sasaki, Hiroaki Adachi, Shuji Kashiwagi
  • Patent number: 9882190
    Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 30, 2018
    Assignee: Asahi Kasei E-materials Corporation
    Inventors: Masahiro Ohashi, Keitaro Ameyama, Yuzuru Sakakibara