BYK-CATALYST 450

Blocked catalyst for aqueous and solvent-borne coatings. Accelerates cross-linking of amino resins with resins containing hydroxyl groups. Lowers baking temperature and time. BYK-CATALYST 450 accelerates the cross-linking of amino resins with hydroxyl group-containing resins. Low reactive melamine formaldehyde HMMM (hexamethoxymethylmelamine) resins, in particular, need an accelerator to lower the baking temperature or to shorten the baking time. The increase in viscosity of the product is significantly lower during storage compared to that of pure p-toluene sulfonic acid, which extends shelf life by 1.5 to 3 times. With this additive, the baking temperature can be decreased by 10-20 °C in comparison with other blocked p-TSA catalysts (such as those containing morpholine or aminomethyl propanol blocking agents).