Patents by Inventor Ariko Suekane

Ariko Suekane 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).

  • Preparation process of polyoxyalkylene polyamine having terminal secondary amino group
    Patent number: 5015774
    Abstract: A process for preparing polyoxyalkylene polyamine having secondary amino groups at the end of polymer chain by reaction of polyoxyalkylene polyol with primary amine is disclosed.Polyoxyalkylene polyamine having higher content of the secondary amino groups can be obtained by using a catalyst containing (1) Ni and Zn, (2) Co and Zn, or (3) Ni, Co and Zn; by using a conventionally known catalyst in the presence of monohydric alcohol; or by using the catalyst containing (1) Ni and Zn, (2) Co and Zn, or (3) Ni, Co and Zn, in the presence of monohydric alcohol.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: May 14, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Ariko Suekane, Fumio Yamazaki, Takayoshi Masuda