Polyurethane top coats for industrial coatings- for long lasting high quality surfaces
One- and two-component polyurethane coating systems are particularly suitable for top coats on high-quality industrial goods. They feature great physical and optical properties and have an excellent durability. Depending on their final application they can be classified in these categories:
The selection of the coating system depends among other considerations on the size and geometry of the parts to be coated. Generally, two-component polyurethane coatings are used when the parts are too big or too complex for one-component stoving coatings. Waterborne and high solids are the choice, when the primary goal is the reduction of solvents. Productions facilities and parts permitting, UV curing top coats can be an alternative. Since UV curing takes place very quickly, the parts can immediately be used for subsequent processing.
For highly efficient coating processes the polyaspartic acids (Polyaspartics) take a very important role. With polyaspartics films can be applied in high thickness, in one pass and bubble-free, replacing several coating layers compared to classical coating systems. Even 1-coat applications are possible with these products (direct-to-metal, DTM). Their high solid character and the rapid film building are additional advantages. Find out more in the section Corrosion protection - Polyaspartics and in the Technology section under High Solid Systems.
New developments in the field of waterborne two-component polyurethane dispersions enable the formulation of low-VOC systems that are well within the VOC limits set by current legislation and offer users maximum freedom in the choice and quantity of co-solvent used. With rapidly drying coating systems, production efficiency can be significantly increased, energy costs lowered as a result of lower oven temperatures compared to standard systems and the CO2 balance thereby improved, all without having adverse effects on pot life.
The property profile of these new waterborne products with respect to gloss, drying and resistance properties is at a comparable level to that of solventborne systems, in some cases even exceeding it.
Examples from a wide range of products suitable for industrial coatings
Polyurethanes for one- and two-component waterborne systems Polyurethanes for one-component waterborne stoving systems Polyurethanes for one-component solventbased systems Polyurethanes for two-component solventbased systems Polyaspartic acids (Polyaspartics) for high solid systems
Polyurethanes for one- and two-component waterborne systems
One- and two-component polyurethane coating systems are particularly suitable for top coats on high-quality industrial goods. They feature great physical and optical properties and have an excellent durability. Depending on their final application they can be classified in these categories: