This type of hybrid binder gives you oil-like performance with the ease of soap and water clean-up. A newer technology based on modified oil binders is available alkyd emulsion. As technology and VOC restrictions have changed over the years, fewer paints today are made with traditional alkyd binders. Traditional alkyd paints dry to a very hard finish and provide superior adhesion and flow and leveling however, they will yellow in light colors and are prone to oxidation and chalking when used on exterior surfaces. A paints binder is the key ingredient that directly relates to a paints performance, including adhesion, washability, scrub resistance, fade resistance or gloss retention.Īlkyd (oil) based binders are made from various oil derivatives such as linseed oil, tung oil, and soya oil. Zinc oxide: Used primarily in primers and exterior paints, zinc oxide provides mildew resistance, corrosion inhibition and stain blocking support.īinders - Provide Performance and Support for Dry Paint Filmīinders are ingredients that provide a binding effect that holds the pigments together to create a dry film on the surface.Talc: Also called magnesium silicate, talc is a soft, general purpose extender pigment.Calcium Carbonate: Used in both interior and exterior paints, calcium carbonate, also called chalk, is a general purpose, low cost, low hide pigment.Diatomaceous silica: Consisting of fossilized organisms, this form of silica is used to control sheen levels. Silica: Provides enhanced durability in exterior paints as well as scrub and abrasion resistance.Clay: Used mainly in interior paints, clay provides hiding power.Commonly used extenders include clay, silica, diatomaceous silica, calcium carbonate, talc and zinc oxide. Some extender pigments also provide additional film performance in the areas of scrub or abrasion resistance. These types of pigments contribute only to a paints dry hide, but are necessary in order to control gloss. Examples of these kinds of pigments include red oxide, yellow ochre and umber.Įxtender pigments are lower cost pigments that give extra weight or bulk to the paint. Inorganic colorants are the duller, earthy colors and are more durable for exterior paint application.These are not very durable for exterior paint application.
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