Railways & Aerospace

PU coatings in railways and aerospace applications Transportation coatings are applied on jet aircrafts, railway vehicles...all kinds of equipment which are usually too big to be baked. Therefore, these coatings are mostly air or possibly forced-dried (excepted OEM paints for truck cabins).

Aerospace coatings shall be very flexible, highly durable in extreme conditions and must show excellent chemical resistance in order to resist Skydrol. For many years, two-component (2K) polyurethane topcoats based on polyester polyols (with high -OH% content) and crosslinked with aliphatic polyisocyanates have proven to be the ideal systems to fulfill these tough requirements.

Truck, buses and railway coatings have to show nice appearance, very good anticorrosion properties, high durability, chemical and stone-chip resistance. They also have to comply with new environmental protection regulations, thus 2K waterborne polyurethane coatings are becoming very popular.