Patents by Inventor Minoru Shigemori

Minoru Shigemori 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: 20240227411
    Abstract: The present invention relates to a pigment dispersion for ink jet ink, including a binder (A), a pigment (B), and an aqueous medium (C). The pigment dispersion is characterized in that the binder (A) is a binder containing a urethane resin (A1) which is a reaction product of polyol (a1), containing polyol (a1-1) having an acid group and polyester polyol (a1-2) other than the polyol (a1-1), with polyisocyanate (a2) containing polyisocyanate (a2-1) having a ring structure, the acid groups possessed by the urethane resin (A1) are partially or entirely neutralized, and the glass transition temperature of the urethane resin (A1) is 70° C. or less.
    Type: Application
    Filed: May 19, 2022
    Publication date: July 11, 2024
    Applicant: DIC Corporation
    Inventors: Naruhito Suzuki, Takashi Nishijima, Minoru Shigemori, Iwao Hattori
  • Publication number: 20240174883
    Abstract: An object of the present invention is to provide an aqueous pigment dispersion that maintains excellent storage stability and can be used to produce an inkjet ink that can form clear printed images with less color unevenness and the like and with excellent water resistance. The present invention provides an aqueous pigment dispersion containing a pigment (A), a pigment dispersing resin (B) having a structure (X) represented by general formula (I) below and an anionic group, and an aqueous medium (C). The pigment dispersing resin (B) contains 0.2 to 1.5 mmol/g of the anionic group in the total amount of the pigment dispersing resin (B).
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicant: DIC Corporation
    Inventors: Yusuke Takahashi, Ryouta Ichikawa, Minoru Shigemori, Takahiro Nio, Shoji Imamura
  • Publication number: 20240158656
    Abstract: The present invention relates to a pigment dispersion for inkjet containing a dispersant (A), a pigment (B), and water (C), the dispersant (A) containing a non-cross-linked resin (A1) at least having a structural unit (a1) derived from an acid group-containing monomer, in the resin (A1), the acid groups in the structural unit (a1) being neutralized using a tertiary alkanolamine with a neutralization rate of greater than 100% and 200% or less with a neutralization rate when the acid groups are neutralized with a theoretical equivalent as 100%, and the tertiary alkanolamine having two to three hydroxy groups in a structure and having a boiling point of 150 to 330° C., and also relates to an inkjet ink containing the pigment dispersion for inkjet and a printed product printed with the inkjet ink.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Takashi Nishijima, Iwao Hattori, Minoru Shigemori, Naruhito Suzuki