Patents Assigned to Nord Naolin Company
  • Patent number: 5650003
    Abstract: A pigment composition containing titanium dioxide (TiO.sub.2) and calcined clay in a weight ratio of between about 30:70 and 70:30, preferably between about 35:65 and 45:55 that is substantially free of a functional microgel component has advantages over a similar pigment containing a functional microgel. The pigment composition contains an amount of epichlorohydrin dimethylamine condensate that is sufficient to cationize the pigment, and lacks a microgel component. It is liquid when agitated. Preferably the composition has a solids content greater than about 55%, and most preferably between about 59% and about 61%.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: July 22, 1997
    Assignee: Nord Naolin Company
    Inventors: Jerry Leon Curtis, Lester William House