PAINTS, VARNISHES AND DISTEMPERS The surtaces of walls, ceiling, wood and metal works are coated with paints, varnishes or distempers to proteet them and give them good appearance. Paint is a mxlure of solid pigments in liqud vehicles. The essential constituents of oil-borne painis are base, vehicle, solvent, pigment, ilier and drier. 1. Base: It is a solid substance in a fine state forming bulk of the paint. White lead, red lead, zinc OXide, iron oxide, aluminium pOwder are commonly Used base materials. 2. vehicle: The liqud substance that holds the ingredienis ol painl is known as vehicle. Linseed il, tung oil, poppy oil, nut oil, etc., are the commonly used vehicles. .. Solvents: Solvents are the paint thiners. Ihe common solvents are turpentine, petroleum spirit nd naptha. . Pigment: Pigments provide colour to the paint Black - Lampblack, charcoal black Brown-Burnt umber, burnt sienna Downloided From : www.asyEngineering. net Blue - Persian blue, ultramarine Green-Chrome green...
What is the paints, varnishes ,distempers