Patents by Inventor Kazuhiko Nemoto

Kazuhiko Nemoto 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).

  • Flame-retardant phenolic resin
    Patent number: 4168365
    Abstract: A flame-retardant phenolic resin which comprises the product obtained on(a) reacting at least one halogenated compound represented by the general formula (I) ##STR1## wherein A is --CH.dbd.CH.sub.2 or --O--CH.sub.2 --CH.dbd.CH.sub.2, X is a chlorine atom or a bromine atom, and n is an integer of 1, 2 or 3, with at least one phenol in the presence of an acidic catalyst; and(b) reacting the resulting reaction product with at least one phosphoric acid ester compound containing a phenolic OH group represented by the general formula (II), (III) or (IV). ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an unsubstituted or substituted hydrocarbyl group, where R.sub.1 and R.sub.2 may be the same or different, and n is 1, 2 or 3, and at least one aldehyde or a precursor thereof in the presence of an acidic or alkali catalyst; and a process for producing the flame-retardant phenolic resin.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: September 18, 1979
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hidekazu Takano, Toshiharu Mikawa, Kazuhiko Nemoto