Patents by Inventor Seiji Kimoto

Seiji Kimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11932732
    Abstract: Provided are a binder in the producing of a casting sand mold according to an ink jet type lamination shaping method in which a binder is printed with respect to sand, a method for producing the binder, and a method for producing a casting sand mold using the binder. Specifically, provided are a binder useful for a casting sand mold of an ink jet type, containing: a resol-type phenolic resin that is obtained by reacting aldehydes (A1), phenols (P1), and a compound (N) having two or more phenolic hydroxyl groups in one molecule or by reacting the aldehydes (A1) and a novolac-type phenolic resin (N1), in the presence of an alkali catalyst, and has a dispersion degree (Mw/Mn) of 1.0 to 3.5 and a phenolic monomer residue of 5% or less, a method for producing the binder, and a method for producing a casting sand mold.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 19, 2024
    Assignee: DIC Corporation
    Inventor: Seiji Kimoto
  • Publication number: 20210147605
    Abstract: Provided are a binder in the producing of a casting sand mold according to an ink jet type lamination shaping method in which a binder is printed with respect to sand, a method for producing the binder, and a method for producing a casting sand mold using the binder. Specifically, provided are a binder useful for a casting sand mold of an ink jet type, containing: a resol-type phenolic resin that is obtained by reacting aldehydes (A1), phenols (P1), and a compound (N) having two or more phenolic hydroxyl groups in one molecule or by reacting the aldehydes (A1) and a novolac-type phenolic resin (N1), in the presence of an alkali catalyst, and has a dispersion degree (Mw/Mn) of 1.0 to 3.5 and a phenolic monomer residue of 5% or less, a method for producing the binder, and a method for producing a casting sand mold.
    Type: Application
    Filed: April 16, 2019
    Publication date: May 20, 2021
    Applicant: DIC Corporation
    Inventor: Seiji Kimoto
  • Patent number: 10358773
    Abstract: The present invention relates to a resin fine particle dispersion optimal for manufacturing a sheet product such as paper. Specifically, an object of the present invention is to provide a resin fine particle dispersion with which a sheet product having excellent heat resistance and high mechanical strength is obtained, and which has a small environmental load due to a small amount of resin particles remaining in wastewater after papermaking. Provided are a resin fine particle dispersion including resin fine particles (A), a fiber material (B), an ionic polyacrylamide (C), and water as essential components, and a sheet product and a friction plate using this.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 23, 2019
    Assignee: DIC Corporation
    Inventors: Seiji Kimoto, Shigenobu Kida
  • Patent number: 9963536
    Abstract: Disclosed are a phenolic hydroxyl group-containing resin which has excellent alkali developing properties and makes it possible to exhibit high heat resistance in a cured product obtained therefrom, a production method therefor, a photosensitive composition, a resist material, a coating film, a curable composition and a cured product thereof, and a resist underlayer film. A phenolic hydroxyl group-containing resin, including a compound (A) having a molecular structure represented by the following Structural Formula (1). (In the formula, R1 represents an alkyl group, an alkoxy group, or an aryl group, R2 represents a hydrogen atom, an alkyl group, or an aryl group, m is an integer of 1 to 3, and n is an integer of 2 to 15. In the case where m is 2 or more, plural R1's may be the same as or different from each other.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: May 8, 2018
    Assignee: DIC Corporation
    Inventors: Tomoyuki Imada, Seiji Kimoto, Shigenobu Kida
  • Publication number: 20180044857
    Abstract: The present invention relates to a resin fine particle dispersion optimal for manufacturing a sheet product such as paper. Specifically, an object of the present invention is to provide a resin fine particle dispersion with which a sheet product having excellent heat resistance and high mechanical strength is obtained, and which has a small environmental load due to a small amount of resin particles remaining in wastewater after papermaking. Provided are a resin fine particle dispersion including resin fine particles (A), a fiber material (B), an ionic polyacrylamide (C), and water as essential components, and a sheet product and a friction plate using this.
    Type: Application
    Filed: March 1, 2016
    Publication date: February 15, 2018
    Inventors: Seiji Kimoto, Shigenobu Kida
  • Patent number: 9828457
    Abstract: Provided is a compound containing a phenolic hydroxy group which has excellent heat resistance, a resist composition which has excellent thermal decomposition resistance, optical sensitivity and resolution, and a composition for a resist underlayer coating which has excellent thermal decomposition resistance and dry etching resistance. The compound containing a phenolic hydroxy group has a molecular structure represented by Structural Formula (1) below: wherein R1 is a hydrogen atom, an alkyl group or an aryl group, n is an integer of 2 to 10, R2 is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group and a halogen atom, m is an integer of 0 to 4, and when m is 2 or greater, a plurality of R2's may be the same as or different from each other and may be bonded to either one of two aromatic rings of the naphthylene skeleton.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: November 28, 2017
    Assignee: DIC Corporation
    Inventors: Tomoyuki Imada, Yusuke Sato, Seiji Kimoto
  • Publication number: 20170137556
    Abstract: Disclosed are a phenolic hydroxyl group-containing resin which has excellent alkali developing properties and makes it possible to exhibit high heat resistance in a cured product obtained therefrom, a production method therefor, a photosensitive composition, a resist material, a coating film, a curable composition and a cured product thereof, and a resist underlayer film. A phenolic hydroxyl group-containing resin, including a compound (A) having a molecular structure represented by the following Structural Formula (1). (In the formula, R1 represents an alkyl group, an alkoxy group, or an aryl group, R2 represents a hydrogen atom, an alkyl group, or an aryl group, m is an integer of 1 to 3, and n is an integer of 2 to 15. In the case where m is 2 or more, plural R1's may be the same as or different from each other.
    Type: Application
    Filed: May 28, 2015
    Publication date: May 18, 2017
    Inventors: Tomoyuki Imada, Seiji Kimoto, Shigenobu Kida
  • Publication number: 20170082923
    Abstract: A photosensitive composition for permanent films having a hydroxynaphthalene novolac resin having a structural portion (I) represented by Formula (1) as a repeating unit and containing a hydroxynaphthalene (A) represented by Formula (2) in an amount of 2% by mass or less of the solid content of the resin, and which does not contain a curing agent, or contains a curing agent of 50 parts by mass or less to 100 parts by mass of the resin. In the formulas, R1 represents a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aralkyl group, or a halogen atom, a plurality of R1 may be the same as or different from each other, R2 represents a hydrogen atom, an alkyl group, or an aryl group, p represents 1 or 2, and q represents 4 or 5, with the proviso that the sum of p and q is 6.
    Type: Application
    Filed: May 19, 2015
    Publication date: March 23, 2017
    Inventors: Tomoyuki Imada, Seiji Kimoto, Yusuke Sato
  • Publication number: 20160159962
    Abstract: Provided is a compound containing a phenolic hydroxy group which has excellent heat resistance, a resist composition which has excellent thermal decomposition resistance, optical sensitivity and resolution, and a composition for a resist underlayer coating which has excellent thermal decomposition resistance and dry etching resistance. The compound containing a phenolic hydroxy group has a molecular structure represented by Structural Formula (1) below: wherein R1 is a hydrogen atom, an alkyl group or an aryl group, n is an integer of 2 to 10, R2 is any one of an alkyl group, an alkoxy group, an aryl group, an aralkyl group and a halogen atom, m is an integer of 0 to 4, and when m is 2 or greater, a plurality of R2's may be the same as or different from each other and may be bonded to either one of two aromatic rings of the naphthylene skeleton.
    Type: Application
    Filed: June 12, 2014
    Publication date: June 9, 2016
    Inventors: Tomoyuki Imada, Yusuke Sato, Seiji Kimoto