Patents by Inventor Katsuki Taura

Katsuki Taura 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).

  • Polymeric peroxy ester and its use
    Patent number: 5041624
    Abstract: A polymeric peroxy ester, which consists of a structural unit represented by the formula (I): ##STR1## and a structural unit represented by the general formula (II): ##STR2## wherein R represents --CH.sub.2 CH.sub.2 --, --C.tbd.C-- or ##STR3## and had an average molecular weight or 1,000-15,000, said structural units (I) and (II) being bonded alternately in a molar ratio within the range of from 6:4 to 4:6, has a 10-hour half-life period temperature of 70.degree.-85.degree. C. and a high activity at relatively high temperature, is safe in the production and handling, is adapted to be used as a polymerization initiator in the polymerization of vinyl monomer, and can produce a vinyl polymer having a high molecular weight.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: August 20, 1991
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Shuji Suyama, Hideyo Ishigaki, Katsuki Taura