POLYURETHANE COATING SYSTEM CONTAINING ZINC INITIATOR

摘要

Zinc crosslinked acrylic dispersions can initiate hardening of multicomponent polyurethane coatings based on polyester polyols or polyurethane polyols and decrease the coating tack-free time. Zinc carbonates and ultrafine zinc oxide can initiate hardening of multicomponent polyurethane coatings and decrease the coating tack-free time. The decreased tack-free times facilitate earlier application of additional polyurethane layers and earlier return of a coated article to service, and can provide improved floor finishes.