Patents Assigned to San Nopco Limited
  • Patent number: 7034066
    Abstract: A water-borne base coating composition for automobiles which can give a coating film excellent in luster and in coloration comprises an emulsion resin obtained by emulsion polymerization of an ?,?-ethylenically unsaturated monomer mixture having an acid value of 3 to 50 and comprising at least 65% by mass of a (meth)acrylate ester whose ester moiety contains one or two carbon atoms, a coloring component comprising an optically coherent flaky pigment, and an acrylic polymer compound having a weight average molecular weight of 400,000 to 1,500,000 and represented by the general formula (1):
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: April 25, 2006
    Assignees: Nippon Paint Co., Ltd., San Nopco Limited
    Inventors: Tsuyoshi Harakawa, Hideaki Ogawa, Shigeyuki Sasaki, Takashi Nakano, Hirofumi Oi
  • Patent number: 6610767
    Abstract: An antistatic inorganic filler comprises an inorganic filler, an organic dispersant applied onto the surface of the inorganic filler and an organic antistatic agent applied onto the organic dispersant layer. The inorganic filler may be prepared by a method comprising the steps of wet-grinding an inorganic filler in the presence of an organic dispersant, drying the ground inorganic filler and then mixing it with an organic antistatic agent; or a method comprising the steps of wet-grinding an inorganic filler in the presence of an organic dispersant, adding an organic antistatic agent to the resulting slurry of the ground filler and then drying the mixture. The inorganic filler shows an effect of imparting long-lasting antistatic properties to plastic and rubber materials in addition to the effects as the filler such as excellent rigidity, heat resistance and impact resistance.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: August 26, 2003
    Assignees: Fimatec Ltd., San Nopco Limited
    Inventors: Seiji Katayama, Yumiko Takase, Ryoji Itoh, Toshiaki Matsushige, Koji Mita
  • Patent number: 4776970
    Abstract: A lubricant for paper coating compositions. The lubricant is an aqueous dispersion of an ester compound of the formula (I): ##STR1## wherein R is an alkyl or alkenyl group having 3 or more carbon atoms or an alkyl or alkenyl group having a hydroxyl group, and R' is an alkyl or alkenyl group having 4 or more carbon atoms, provided that the total number of carbon atoms of R and R' is 15 or more. The lubricant is made by emulsifying or dispersing the ester compound with a high-speed agitation emulsifying device or piston-type high pressure emulsifying device in the presence of water and nonionic and anionic surfactants or the salt of a copolymer of an .alpha.,.beta.-unsaturated dibasic acid or its monoester with styrene.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: October 11, 1988
    Assignee: San Nopco Limited
    Inventors: Yoshihiro Hayashi, Takeshi Okubo, Kazuhiro Takeshita, Akinori Higuchi