Patents by Inventor Kenji Kasano

Kenji Kasano 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).

  • Y zeolite catalyst
    Patent number: 5026941
    Abstract: A catalyst comprising a Y zeolite of which silica/alumina molar ratio ranges from 15 to 110, use of this catalyst for alkylation of monoisopropylnaphthalene and a method for preparation of this catalyst comprising treating a Y zeolite with an acid(s) to adjust the silica/alumina molar ratio to 15 to 110 are disclosed. A method for preparation of mono and/or diisopropylnaphthalenes comprising reacting naphthalene and/or monoisopropylnaphthalene with propylene in the presence of at least one saturated polycarbocyclic compounds and a catalyst comprising a Y zeolite having the silica/alumina molar ratio of from 10 to 350 are disclosed. This catalyst makes possible the production of .beta.-monoisopropylnaphthalene in good yield by alkylation of naphthalene and the production of .beta.-monoisopropylnaphthalene and/or 2,6- and 2,7-diisopropylnaphthalenes in good yield by alkylation of naphthalene and/or monoisopropylnaphthalene in good percent conversion.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: June 25, 1991
    Assignee: Tosho Corporation
    Inventors: Motohiro Oguri, Yoshiaki Kano, Kiyotaka Mishima, Masahiko Yamada, Kenji Kasano, Masaru Uemura