Patents Assigned to Holland Colours Apeldoorn B.V.
  • Solid particulate coloring composition
    Patent number: 4681632
    Abstract: Solid particulate coloring composition comprising a number of components including at least one component being liquid at ambient temperature obtained by mixing a molten carrier material which is solid at ambient temperature; one or more of said components which are liquid at ambient temperature, a pigment of dyestuff, and a particulate material having a large specific surface, preferably a synthetic silica material and dividing said mixture into particles being solid under ambient conditions.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: July 21, 1987
    Assignee: Holland Colours Apeldoorn B.V.
    Inventors: Richard F. T. Bes, Jan D. Knol
  • Particulate coloring composition made by prilling
    Patent number: 4484952
    Abstract: Coloring composition in finely divided form, obtained by mixing a meltable organic carrier with a pigment and finely dividing the composition. The organic carrier consists of a mono or tetra ester of pentaerythritol and stearic acid, stearylamide, ethylene bisstearylamide or hydrogenated castor oil.For adjusting the melting range and the viscosity of the composition, metal soaps, waxes or phthalic acid esters may be added.
    Type: Grant
    Filed: August 3, 1983
    Date of Patent: November 27, 1984
    Assignee: Holland Colours Apeldoorn B.V.
    Inventors: Richard F. T. Bes, Jan D. Knol, Gooitsen Roest