How Can I Improve the Colorant Acceptance of My Paints?
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Problems such as pigment float, loss of color and poor rub up when colorants are added to paints occur because some additives used to stabilize the colorant dispersion migrate to pigments and fillers in the white base paint. This causes the colorant pigment to flocculate, causing poor colorant acceptance. Compatibilizers, such as Air Products ZetaSperse® 179 and 182 Dispersants and Carbowet® GA100 and GA210 Surfactants, when used in the paint preparation,can help to compatibilize colorants for improved color development and acceptance by providing fast acting, additional stabilizing properties to the colorant when it is added to the base paint. This stabilization can also help to improve rub up properties and prevent pigment flotation. Carbowet GA100 and GA210 can also help to improve the preparation of the base paint by rapidly wetting and deaerating the dry pigments and fillers and then acting as a co-dispersant to accelerate the milling process.