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Two-pack polyurethane paints are used almost exclusively as topcoats as they offer excellent UV resistance as well as providing a high gloss and enhanced durability. These characteristic come from the fact that as well as physically drying like traditional single pack paints; the two components (a base and a curing agent) undergo an irreversible chemical reaction. This chemical reaction relies on the two components being combined together in the right quantities so it is extremely important to adhere to the correct mixing ratios.

One of the disadvantages of two-pack polyurethane paints is that they cannot be applied over an existing single pack coating. This is because they contain relatively aggressive solvents that can "attack" single pack paint causing it to shrivel and peal. Polyurethane paints also tend to become tacky very quickly due to solvent leaving the paint surface. This will be especially true if applying in hot, dry or windy conditions. It may be necessary to thin the paint (with the correct solvent) in order to increase the working time.


Features of Polyurethane Paint :-

  • Balanced composition
  • Eco-friendly
  • Excellent finish
  • Corrosion resistance
  • High stability of finish

Advantages of Polyurethane Paint :-

Versatility:

Polyurethane coatings can be applied to many surface materials, including wood, metal and plastic, and virtually any type of flooring surface. Its versatility of use is one of the characteristics of polyurethane that has led to its popularity.

Protection:

A primary benefit of using polyurethane coatings is the protection it provides the surface itself. When applied, the coating creates what is essentially an impermeable barrier between the elements and the object it's covering. With its smooth, hard surface, polyurethane seals out rain, dirt, mud, and other natural surface enemies. It allows provides protection from humidity and oxidation, which can cause corrosion.

Limited Risk:

Since polyurethane doesn't emit any vapours that may be harmful to people, animals or the environment, the choice to use it comes at little risk overall. Just be cautious that when you do use it you don't allow children or animals near any open containers since the consumption of polyurethane, like any other coating material, is harmful when swallowed.

Ease of Application:

Polyurethane has come a long way since World War II, and with the many benefits and advantages it provides, it's no wonder it has become a mainstream choice in surface protection.

Applications of Polyurethane Paint :-

  • Heavy Mechanical Industry
  • Food Processing Industry
  • Heavy Chemical Industry