Patents by Inventor Shuzo Fujikawa

Shuzo Fujikawa 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).

  • Process for producing 2-hydroxymethylene-3,3-dialkoxypropanenitrile alkali metal salt and process for obtaining alcoholic slurry of said compound from its synthetic reaction mixture
    Patent number: 4978766
    Abstract: There are disclosed a process for producing a 2-hydroxy-methylene-3,3dialkoxypropanenitrile alkali metal salt (ALVM.sub.2) represented by the formula (I): ##STR1## wherein R represents a lower alkyl group having 1 to 4 carbon atoms and M represents an alkali metal,which comprises allowing a 3,3-dialkoxypropanenitrile represented by the formula (II):(RO).sub.2 CHCH.sub.2 CN (II)wherein R is the same as defined above,to react with carbon monoxide in a lower alcoholic solution of an alkali metal lower alkoxide; and a process for obtaining ALVM.sub.2 -alcohlic slurry, which comprises adding a lower alcohol having 1 to 4 carbon atoms to a synthetic reaction mixture containing ALVM.sub.2 represented by the above formula (I) and methyl formate and heating the mixture to 30.degree. to 70.degree. C., thereby taking methyl formate out of the system.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: December 18, 1990
    Assignee: UBE Industries, Ltd.
    Inventors: Keigo Nishihira, Shuzo Fujikawa, Masayoshi Yamashita