Providing the required physical properties. The binder must be chosen for the
most desirable physical and chemical properties for an end use application.
Important properties include:
Hardness Impact resistance Hot/cold resistance
Flexibility Weather resistance Chemical resistance
Durability Water resistance Corrosion resistance
Recoatability Heat resistance Detergent resistance
Abrasion resistance Sunlight resistance Stain resistance
Various products require paint films that possess properties specific to that
particular product. For example, automobiles and trucks require finishes that
resist road salt, gasoline, oil, harsh chemicals, detergents, bird droppings, tree saps
and acidic components in rain and air. Home appliances such as washing machines
must have finishes that stand up to water, bleach and alkaline detergents.
Machinery finishes must resist cleaning agents, heat-transfer fluids, cutting oils
and various lubricants.