Patents by Inventor Atsushi INATOMI

Atsushi INATOMI 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).

  • Publication number: 20230331878
    Abstract: A method for producing a polymer composition including modified polymers having a boron-containing functional group includes anionically polymerizing at least one monomer selected from the group consisting of conjugated dienes and aromatic vinyl compounds in the presence of an active metal or an active metal compound capable of catalyzing anionic polymerization to produce a terminal-active polymer (Z), and reacting the terminal-active polymer (Z) obtained with a boric acid compound having at least two or more partial structures represented by the formula B-O-R (B is boron, O is oxygen, and R is an organic group) and having a Taft’s steric parameter Es of -0.30 or less with respect to at least one of Rs bonded to the oxygen atom in the partial structures.
    Type: Application
    Filed: July 21, 2021
    Publication date: October 19, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Atsushi INATOMI, Takuro KARAKIDA, Tadahito FUKUHARA, Satomi OHTA
  • Publication number: 20220289872
    Abstract: To provide a conjugated diene graft polymer having high transparency, heat resistance and weather resistance, and a method for producing the conjugated diene graft polymer. A method for producing a conjugated diene graft polymer in which a side chain (b) including a polymer including at least one monomer unit selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit is bonded to a main chain (a) including a polymer including a conjugated diene unit, via a hetero atom Z serving as a branching point and having a valence of not less than 3, the method including a step of reacting a specific active end polymer and a specific functional group-modified conjugated diene polymer having a functional group in a side chain to thereby produce a conjugated diene graft polymer; and a step of recovering the conjugated diene graft polymer obtained.
    Type: Application
    Filed: September 18, 2020
    Publication date: September 15, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Yoshikazu UENO, Hiroshi KANBARA, Atsushi INATOMI, Junya TAKAI, Zhaoming MA
  • Publication number: 20220081546
    Abstract: The present invention relates to not only the provision of a composition containing a wide variety of particles with good dispersibility, the composition being able to make both rigidity and elongation at sufficient levels compatible with each other even under a low humidity, etc. but also the provision of a coating and a film each formed of the foregoing composition, and a base material having the foregoing coating or film. Specifically, the present invention provides a composition containing an ethylene-vinyl alcohol copolymer (A) having the content of an ethylene unit of 0.5 to 19 mol % relative to all structural units and a particle (B), wherein the content of the particle (B) is 1 part by mass or more and less than 100 parts by mass based on 100 parts by mass of the ethylene-vinyl alcohol copolymer (A).
    Type: Application
    Filed: December 20, 2019
    Publication date: March 17, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Yuki FUJII, Kenta TOSHINARI, Yasunari UMEDA, Atsushi INATOMI, Akio FUJITA
  • Publication number: 20220033637
    Abstract: An oil-resistant film may be provided by an oil-resistant base material that is excellent in the oil resistance even in not only a plane part but also a bent part of a package can be obtained and also to the provision of an oil-resistant base material having the oil-resistant film and an oil-resistant paper having the oil-resistant film. An oil-resistant film may contain a polyvinyl alcohol-based polymer (A) and a polymer particle (B) containing a polymer having a glass transition temperature of 40° C. or lower, wherein the content of the polymer particle (B) is 1 part by mass or more and less than 150 parts by mass based on 100 parts by mass of the polyvinyl alcohol-based polymer (A); and an oil-resistant base material (oil-resistant paper) having the oil-resistant film on a base material (paper).
    Type: Application
    Filed: December 20, 2019
    Publication date: February 3, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Kenta TOSHINARI, Yuki FUJII, Atsushi INATOMI, Akio FUJITA
  • Publication number: 20220017703
    Abstract: The present invention relates to monodisperse hydrogel particles containing a cross-linked product of a vinyl alcohol-based polymer having an ethylenically unsaturated group and an average degree of polymerization of 450 or more, the monodisperse hydrogel particles having an average particle size of 10 to 5,000 ?m, and a coefficient of variation of a particle size distribution of 10% or less.
    Type: Application
    Filed: November 21, 2019
    Publication date: January 20, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Akio FUJITA, Atsushi INATOMI, Kenta TOSHINARI, Goro KOBAYASHI