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About Paints

Why National Paints?

Paints or coatings are liquid, paste, or powder products, which are applied to surfaces by various methods and equipment in layers of given thickness. These form adherent films on the surface of the substrate.

Coatings for Buildings Coatings of buildings are solvent or waterborne. They include coatings that can protect all materials used in building and construction work (e.g., wood, steel, light metals and alloys, plastics, concrete, plaster) against corrosion and decomposition; they can also give a decorative appearance.

Furniture Coatings The long-term value of furniture depends to a high degree on its surface characteristics. Untreated or uncoated surfaces very quickly lose their good appearance and deteriorate under conditions of use. Different forms of wood are used for furniture (e.g., solid wood, veneer, plywood, particle board, and chipboard). Solid wood and veneer may originate from different types of trees with a wide range of properties partly due to their contents of resins and essential oils.

Marine The requirements of any coating system are determined by its in-use environment (service, construction, or maintenance). The sea is wet, salty, usually oxygenated, sometimes anaerobic, and full of living organisms which may colonize the surface of a vessel or platform.

Automotive Cars are coating to achieve maximum, long-lasting corrosion resistance. Cars must also be given an optimum appearance that lasts for many years. Long-lasting color and gloss retention as well as resistance against cracking are therefore necessary.

Exterior Use Coatings Exterior use coatings must be weather-resistant: they must adhere to a wide range of substrates and retain their gloss and shade fastness for a number of years. Bricks, concrete, cement, and stone are the components used for the main construction of building. When the surface is new, most of these materials are very alkaline. Therefore the binders for primers and finishing coats must be particularly resistant to alkali because otherwise hydrolysis can occur in the present moisture due to the high pH of the substrate.

Wood is susceptible to attack from moisture, which is taken up through unprotected end grain, open joints etc. causing dimensional movement. Also sunlight (mainly UV rays) breaks down the wood by depolymerization of the lignin. The UV transparency of the coating therefore has to be low. Fungi may grow when wood is open to moister penetration. The mold grows quickly and disfigures the surface.

Coatings for Metal. Iron and steel are converted to their oxide form in the presence of oxygen and water. The oxygen layer that forms on the surface is rust.

Fire Retardant Coatings.The flammability of combustible wood structures can be reduced by applying a fire retarding paint that forms an insulating layer. The thermal, insulation is so good that ignition can be delayed by at least 10 minutes.

Clean Air Measures Paints and coating materials frequently contain substances that may be a hazard both to human health and to the environment. The primary concern is to minimize adverse effects in all sectors.
Organic solvents in paints constitute significant sources of atmospheric pollution. These direct effects of these substances and their mixtures, particularly the odor nuisance, are taken into account by National Paints. Solvent emissions are reduced by three ways:
  1. Use of low-solvent or solvent-free products.
  2. Application methods with low solvent emissions.
  3. Implementation of waste air treatment as a secondary measure in paint application facilities.