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Usage Levels of pearl pigment on coating application
Jun 25, 2018

Dryblended effect pigments are typically used at loadings of 3-5% and mixed with the powder coating to produce a metallic effect. Bonded materials can be used at a higher concentration. Some applicators use effect pigments at very low concentrations (e.g., 0.25% to 1.0%) to act as a toner. The overall usage level depends on the desired finish.

Effect pigments can be combined with transparent colorants to form various colors. Opaque colorants and minerals should be avoided because they mask the benefit of effect pigments. Most commercially available powder coatings are not designed to be transparent bases and are therefore not optimally suitable for dryblending with effect pigments. In these cases, large-particle-size pigments will yield the greatest effect. If possible and economical, a two-stage process provides the brightest effect appearance: 1) an opaque color is sprayed first and partially cured; and 2) the effect pigment is dispersed in a clear powder and fully cured. The transparency of effect pigments creates a sense of depth in the coating. 

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