It can promote the ring-opening reaction of epoxy and carboxyl groups, with very low dosage, and antiyellowing. It can reduce the curing temperature of the system, significantly improve the incomplete curing of the system, improve the impact resistance of the coating film, increase the adhesion of the substrate, and the anti-yellowing temperature can reach 230 ℃.
Curing accelerator KC5230 is a special onium salt catalyst that can be used as an internal catalyst for carboxyl polyester resins or as a curing accelerator to reduce the curing temperature or shorten the curing time of powder coatings.
Accelerate ring-opening polymerization of an epoxy group and carboxyl: Superb anti-yellowing in 230C with low dosage; Anti-cracking;
Lower the curing temperature/shorten the curing time, Improve the curing reaction.
KC5230 is used in powder coatings based on polyester/TGIC
3)Special Features and Benefits
Better curing effect and thermal stability than QAS. Easy to use, free to flow, and humidity resistant.
Cost performance: Catalyze the curing reaction with a low dosage
0.05-0.1 % additive (as supplied) based on the total formulation when extruding with all formulation components.
The above-recommended levels can be used for orientation
Optimal levels are determined through a series of laboratory tests.