Patents Assigned to Sumitomo Bayer Urethane Co., Inc.
  • Method for decomposing polymer containing urethane linkage and/or urealinkage
    Patent number: 5906998
    Abstract: In the decomposition of a polymer containing a urethane linkage and/or urea linkage in the presence of a decomposing agent, the amount of evolved carbon dioxide is measured and the decomposition reaction is conducted until a total amount of evolved carbon dioxide reaches a specified value to obtain a liquid decomposition product. According to the present invention, a decomposition product having constant quality can be obtained in a simple manner.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: May 25, 1999
    Assignees: Sumitomo Bayer Urethane Co., Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Hoshino, Takaaki Masuda, Hiroshi Ikuta, Hisao Mitobe