Patents by Inventor Shigetoshi OTOYAMA

Shigetoshi OTOYAMA 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).

  • Polyisocyanate composition, method for producing the same, coating composition, aqueous coating composition, and coated substrate
    Patent number: 10266639
    Abstract: The present invention provides a polyisocyanate composition comprising a modified polyisocyanate obtained by a reaction between a polyisocyanate and a polyalkylene glycol alkyl ether having a specific structure. In the polyisocyanate composition, the average number of isocyanate functional groups is 1.8 or more and 4.0 or less, the moiety derived from the polyalkylene glycol alkyl ether in the modified polyisocyanate is contained in an amount of 10 mass % or more and 18 mass % or less based on the total amount of the polyisocyanate composition, and the polydispersity index of molecular weight distribution of the moiety derived from the polyalkylene glycol alkyl ether in the modified polyisocyanate is 1.05 or more and 2.00 or less.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: April 23, 2019
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kazuko Nakajima, Shinichiro Watanabe, Shigetoshi Otoyama
  • POLYISOCYANATE COMPOSITION, METHOD FOR PRODUCING THE SAME, COATING COMPOSITION, AQUEOUS COATING COMPOSITION, AND COATED SUBSTRATE
    Publication number: 20180016386
    Abstract: The present invention provides a polyisocyanate composition comprising a modified polyisocyanate obtained by a reaction between a polyisocyanate and a polyalkylene glycol alkyl ether having a specific structure. In the polyisocyanate composition, the average number of isocyanate functional groups is 1.8 or more and 4.0 or less, the moiety derived from the polyalkylene glycol alkyl ether in the modified polyisocyanate is contained in an amount of 10 mass % or more and 18 mass % or less based on the total amount of the polyisocyanate composition, and the polydispersity index of molecular weight distribution of the moiety derived from the polyalkylene glycol alkyl ether in the modified polyisocyanate is 1.05 or more and 2.00 or less.
    Type: Application
    Filed: February 2, 2016
    Publication date: January 18, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Kazuko NAKAJIMA, Shinichiro WATANABE, Shigetoshi OTOYAMA