Patents by Inventor Mayumi Tani

Mayumi Tani 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).

  • .beta.-amino-.beta.-propiolactam derivative and moisture curable polyurethane composition thereof
    Patent number: 4880869
    Abstract: This invention relates to .beta.-amino-.beta.-propiolactam derivativatives, moisture curable polyurethane compositions and their applications.The products of this invention have excellent characteristics such as good storage stability, rapid curing with atmospheric moisture and freedom from foaming.More particularly, condensed compounds are obtained by reacting specific secondary diamines such as piperazine and 1,3-(4,4'-dipiperidyl)propane with monoaldehyde having at least 3 carbon atoms, for example, isobutylaldehyde and .beta.-phenylpropylaldehyde. The .beta.-amino-.beta.-propiolactam derivatives are prepared by reacting the condensed compounds with monoisocyanate such as phenyl isocyanate and equimolar reaction products of diisocyanate with lower monohydric alcohol.In addition, the moisture curable polyurethane compositions contain said derivatives and polyisocyanate and/or polyurethane prepolymer having terminal isocyanato radicals.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: November 14, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masaaki Aoki, Mayumi Tani, Masayuki Kamiyama, Kiyotsugu Asai