Cycat 500 Sulfonic acid Cytec Drier / Siccative >> Primary drier (active drier) Acrylic/Acrylate Resins Amino Resins Coatings >> Electrodeposition Coatings >> Solvent-Free/ High-Solids Coil Coating Isobutanol CYCAT 500 catalyst is a strong sulfonic acid catalyst which catalyzes the curing reaction between carboxyl, hydroxyl and amide functional groups with alkylated melamine formaldehyde and urea formaldehyde crosslinking agents. CYCAT 500 catalyst is recommended for use in electrocoating applications to achieve cures in the range of 110-135°C in 15 to 30 minutes, or to reduce the baking time at higher baking temperatures. CYCAT 500 catalyst is also recommended for coatings applied by other application techniques, providing improved adhesion and resistance properties compared with other sulfonic acid type catalysts. ADVANTAGES Reduces energy requirements No decrease in electrocoat bath stability High electrical resistivity Improves resistance properties Organic (hydrocarbon) solvent soluble APPLICATION AREAS Primers Electrocoat Coil coating finishes High solids systems Electrostatic spray systems SOLUBILITY CYCAT 500 catalyst is soluble in most commonly used organic solvents. Its solubility in water is limited. Grams CYCAT 500 catalyst/ 100 Grams Solvent at 25°C Deionized water 5 Deionized water (CYCAT 500 catalyst pre-neutralized with dimethylethanolamine) >100 n-Butanol >100 2-Ethoxyethanol >100 2-Butoxyethanol >100 Xylene >100 USE IN ELECTROCOATING SYSTEMS CYCAT 500 catalyst has been found to accelerate the cure reaction of amine and alkali hydroxide neutralized amino crosslinked electrocoating materials and reduce the baking temperature by about 40 to 50°C (75 to 100°F). The lowest cure temperatures have been achieved with carboxyl, hydroxyl containing resins. Although the amount of catalyst required will depend upon the resin system used, the cure time and temperature, a range of 1-3% catalyst solution on the binder solids is suggested as a starting point. Migration studies have shown that, based on the bath composition, 40-70% of the catalyst present in the bath codeposits in the film. The feed formulation, therefore needs to contain a different level of catalyst than the original bath. The bath stability of electrocoating paints containing CYCAT 500 catalyst has been studied by static aging. After 30 days stirring in open tanks at 24°C, film properties were checked and compared to the original. Except for a slight decrease in film thickness, there were no differences observed. The deposited films were smooth and even. Salt-spray resistance of panels prepared from the original and aged coating were equivalent. CYCAT 500 catalyst can be added during the preparation of the electrocoating paint or to the electrocoating tank. Because this catalyst is a strong acid and only partially watersoluble in the acid form, neutralization of the CYCAT 500 catalyst with a base before addition to the electrocoating material is recommended. CYCAT 500 catalyst has little or no effect on gloss versus uncatalyzed paint. Some reduction in salt spray resistance has been noted with finishes containing CYCAT 500 catalyst versus the uncatalyzed fully baked electrocoating paint. The use of 0.5 to 2% medium chrome yellow or basic lead silico chromate pigment eliminates this reduction in salt spray resistance. USE IN SPRAY-APPLIED SYSTEMS Effect on Resistivity of Electrostatic Spray Finishes CYCAT 500 catalyst is recommended for spray applied coatings. It has less effect on the electrical resistivity of the coating than other sulphonic acid type catalysts. Catalyst: None CYCAT 500 CYCAT 4040 Strong sulfonic acid catalyst which catalyzes the curing reaction between carboxyl, hydroxyl and amide functional groups with alkylated melamine formaldehyde and urea formaldehyde crosslinking agents. Recommended for use in electrocoating applications to achieve cures in the range of 110-135°C in 15 to 30 minutes, or to reduce the baking time at higher baking temperatures. Recommended for coatings applied by other application techniques, providing improved adhesion and resistance properties compared with other sulfonic acid type catalysts. Can be used for primers, electrocoat, coil coating finishes, high solids systems, electrostatic spray systems. Advantages: reduces energy requirements. No decrease in electrocoat bath stability. High electrical resistivity. Improves resistance properties. Organic (hydrocarbon) solvent soluble Soluble in most commonly used organic solvents (n-butanol, 2-ethoxyethanol, 2-Butoxyethanol, xylene), in deionized water (CYCAT 500 catalyst pre-neutralized with dimethylethanolamine) . Its solubility in water is limited.