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US 6,306,931 B1Granted
Lamellar pigment particle dispersion
AssigneeSilberline Manufacturing Co., Inc.
InventorRussell L. Ferguson
Life of this patent
Estimating the term…
Abstract
Lamellar pigment particles are provided in a form that is readily used for coating compositions by use of a dispersion. The dispersion contains the pigment particles in an amount of 20-55% by weight, and also includes a carrier that is compatible with the vehicle of the intended coating composition. The dispersions are stable and provide essentially complete separation of the lamellar pigment particles.
Claims14
A method of forming a coating composition, comprising:
- forming a lamellar pigment dispersion suitable for forming a coating composition by a method comprising:
- adding lamellar pigment particles to a mixing device;
- adding a dispersion carrier to the mixing device, the dispersion carrier being compatible with a vehicle for a coating composition;
- mixing the pigment particles and dispersion carrier so that the pigment particles are completely wetted with the dispersion carrier;
- and
- adding and mixing additional dispersion carrier to form a dispersion containing 20-55% by weight of the lamellar pigment particles, the pigment particles remaining dispersed in the dispersion without separation upon standing for one year at ambient temperature;
- storing the dispersion containing the lamellar pigment particles;
- and
- mixing the dispersion containing the lamellar pigment particles with a carrier to form a coating composition.
6 more elements
Dependencies are inferred from the claim text.