Following are the objects of paintings a surface:
(1) It protects the surface from weathering effects of the atmosphere and actions by other liquids, fumes and gases.
(2) It prevents decay of wood an corrosion in metal.
(3) It is used to give good appearance to the surface. The decorative effects may be created by painting and the surface becomes hygienically good, clean, colorful and attractive.
(4) It provides a smooth surface for easy cleaning.
Characteristics of an ideal paint: Following are the characteristics of an ideal paint:
(1) It should possess a good spreading power i.e. maximum area of the surface should be covered by minimum quantity of the paint.
(2) The pains should be fairly cheap ad economical.
(3) The paint should be such that it can be easily and freely applied on the surface.
(4) The paint should be such that it dries in reasonable time and not too rapidly.
(5) The paint should be such that its colour is maintained for a long time.
(6) The paint should form a hard and durable surface.
(7) The paint should not affect health of workers during its application.
(8) The paint should not be affected by weathering actions of the atmosphere.
(9) The paint should