Use of nanoparticulate organic pigments in paints and coatings
AssigneePPG Industries Ohio, Inc.
InventorsNoel R. Vanier, Calum H. Munro, Eldon L. Decker, Rachel B. Wilson, Matthew E. Wehrle
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Abstract
A protective and decorative coating composition including about 2 to 10 different colorants which in combination with a resinous composition produce a desired visible coating. A majority of the colorants has a maximum haze of about 10% and exhibits an absorbance peak in the visible spectrum wherein at least about 50% of the total absorbance in the visible spectrum occurs at wavelengths within about 50 nm of the wavelength of the peak absorbance.
Claims16
A powder coating comprising:
- a resinous binder;
- and
- a plurality of colorants, wherein a majority of the colorants have a maximum haze of about 10% and exhibit an absorbance peak in the visible spectrum.
A powder coating comprising a plurality of flake-like assemblages for hiding a substrate, said assemblages comprising a plurality of scattering members encapsulated in a resinous polymer, wherein a difference in refractive index between said scattering members and said polymer is greater than about 0.1 and said assemblage has an aspect ratio of about 2 to about 250.
Dependencies are inferred from the claim text.