1 -4 BASIC KNOWLEDGE ABOUT PAINTS AND PAINTING 1. PIGMENTS Pigments are tiny powders that do not mix with water, oil or solvents. They do not adhere to other subs- tances unless they are mixed with resins and other components in the form of paint. Pigments may be divided into several kinds by their use. Extender pigments Pigmen~s Corrosion-resistant pigments General pigments Color pigments MetaUic pigments Titanized mica pigments (1) EXTENDER PIGMENTS Extender pigments are used mainly in undercoat paints to give body and improve grindability. (2) CORROSION-RESISTANT PIGMENTS Corrosion-resistant pigments are used mainly in undercoat paints to discourage corrosion.
(3) COLOR PIGMENTS Color pigments are used mainly in top-coat paints to give colors and hiding power to the coat. Q) General pigments They give colors such as red, blue, yellow, white and black. ®Metallic pigments Metallic pigments are tiny flakes of aluminum and are used to give shiny and metallic look to the coat. A paint color containing black metallic pigments is called black metallic color, for example. ® Titanized mica pigments These pigments consist of flakes of mica coated with titanium oxides and give pearl-like luster to the coat. Pink colors containing titaniied mica:pigments, for example,' are called pink mica or pink pearl mica. -6-