13 сентября, 2015 
Pokraskin Polyisocyanates are used with hydroxyl functional polyesters for ambient-cure two-component systems giving rise to films with an excellent combination of mechanical properties, solvent resistance, adhesion, durability and optical properties. More details can be found in Section 2.11.
Epoxy resins are important curing agents for powder coatings based on acid functional polyester resins. Epoxy-polyester hybrid powder
|
|
|
Figure 2.16: Reactions of carboxylic acid functional polyesters |
coatings show excellent adhesion, hardness, toughness and chemical resistance. High MW solid epoxy resins are normally used for such coatings. In addition to conventional epoxy resins, triglycidyl isocy — anurate is used as a cross-linker for powder coatings with improved durability. More details on epoxy resins can be found in Section 2.9.
In addition to these systems, polyesters modified with silicone are important binders for coatings with excellent weather resistance and mechanical properties coupled with improved heat resistance.
Опубликовано в рубрике 