Patents by Inventor Midori NAGAMOTO

Midori NAGAMOTO 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).

  • Method for producing carbamate and method for producing isocyanate
    Patent number: 11352319
    Abstract: The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and (2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: June 7, 2022
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Nobuhisa Miyake, Koichi Nakaoka, Yusuke Sakurai, Midori Nagamoto, Kazuhiro Takagaki, Masaaki Shinohata
  • METHOD FOR PRODUCING CARBAMATE AND METHOD FOR PRODUCING ISOCYANATE
    Publication number: 20210179548
    Abstract: The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and (2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.
    Type: Application
    Filed: May 15, 2019
    Publication date: June 17, 2021
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Nobuhisa MIYAKE, Koichi NAKAOKA, Yusuke SAKURAI, Midori NAGAMOTO, Kazuhiro TAKAGAKI, Masaaki SHINOHATA