Patents Assigned to Holland Colours Apeldoorn B.V.
  • An injection-blow molding method for manufacturing a colored polyester container
    Patent number: 4988477
    Abstract: A colored container of polyester obtained by injection molding of a preform starting from colorless polyester granulate to which a particulate dyestuff composition is fed. The particulate dyestuff composition used is a particulate intimate mixture of a dyestuff and/or a pigment and a solid wax-like carrier having a melting point above 45.degree. C. The preform obtained is converted to the final shape by blow molding.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: January 29, 1991
    Assignee: Holland Colours Apeldoorn B. V.
    Inventors: Richard F. T. Bes, Jan D. Knol
  • 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