Polyurethane for non-reactive hot melt adhesive systems
Thermoplastic hot melt adhesives liquefy when heated. They crystallize and produce an adhesive bond during the subsequent cooling process and rapidly develop bond strength. Desmomelt® from Covestro provides good processing behavior and high performance in the finished product.
Our Desmomelt® product is a linear, thermoactivatable polyurethane powder based on a polyester polyol and an aromatic diisocyanate.
The material is an ideal choice for formulators seeking a formulation that doesn’t use solvents and offers 100 percent solids. Other benefits include:
- Fast initial bond strength
- High chemical resistance
- Excellent adhesion on many substrates
- Extreme high resistance against heat and cold
- Low thermoactivation temperature for heat sensitive substrates