Polyurethane, commonly abbreviated PU, is any polymer consisting of a chain of organic units joined by urethane (carbamate) links. Polyurethane polymers are formed through step-growth polymerization by reacting a monomer containing at least two isocyanate functional groups with another monomer containing at least two hydroxyl (alcohol) groups in the presence of a catalyst. Polyurethane formulations cover an extremely wide range of stiffness, hardness, and densities.
Polyurethane coatings can provide a thin film, high-gloss finish with exceptional weathering performance characteristics. Polyurethane coatings are used across virtually all industry segments to provide a smooth durable finish that has superior resistance to corrosion, abrasion, and chemical exposure.
|Adhesion (ASTM D4541)||2562 psi|
|Impact Strength (ASTM D256)||155 inch – pounds|
|Hardness (ASTM D3363)||H pencil|
|Use Temperature||250°F max|
|Chemical Resistance (ASTM D543)||Excellent|
|Salt Spray Resistance (ASTM B117)||3000 hrs|
|Thickness||.002″ – .003″|