Typical coatings where CatOnium catalysts are employed are pure epoxy and epoxy/phenolics powder coatings, polyester/epoxy hybrids, polyester powder coatings for outdoor application crosslinked with TGIC or diglycidyl terephthalate, epoxy functional acrylic powder coatings with polycarbonic acids as crosslinkers, two component liquid epoxy coatings crosslinked with polyamidoamines etc.

Quaternary ammonium salts have limited thermal stability and are mostly used for temperatures below 100*C. For shorter curing times, however, higher curing temperatures have no significant effect on their stability. Phosphonium salts are used in the cases in which the use of ammonium compounds is not suitable because of their thermal instability. The thermal stability of the quaternary phosphonium salts is quite good in a range between 120-150*C, but depending on the curing time they can be also used at temperatures even higher than 200*C.

The last group of CatOnium catalysts in our program includes a range of quaternary pyridinium salts that are very effective at high temperatures. For coatings crosslinked with polyisocyanates ViaCat organotin compounds are very effective catalysts.

ViaCat catalysts are used in two component acrylic coatings for car refinishing, two component polyurethane coatings for corrosion protection and polyurethane powder coatings