Cymel 345 Methylated melamine resin Cytec Amino Resins >> Urea based (incl. UF) Coatings >> Solventborne Coatings >> Waterborne Isobutanol Slightly soluble in water and xylene HIGH SOLIDS METHYLATED MELAMINE RESINS METHYLATED HIGH IMINO MELAMINE RESINS Methylated high imino melamine resins are partially methylolated and highly alkylated. These characteris-tics result in resins containing a significant concen-tration of alkoxy/imino or high NH functionality. The advantages are fast cure response at 120-150°C without the need for strong acid catalysts, fast cure response in waterborne formulations, high film hardness, and low formaldehyde release on cure. In addition to reacting with hydroxyl, carboxyl and amide functionality on polymers, these resins also self-condense readily. Therefore, their practical equivalent weight is typically 180-240. They, too, can be stabilized by adding amine and stabilizing alcohol to the formulation. Compared to their highly alkylat-ed counterparts, the high imino resins usually result in slightly less flexible coatings and slightly higher VOCs when used in solvent-based systems. CYMEL 345 Fast cure response. Does not require a strong acid catalyst. Ve ry low HCHO release. Partially methylolated, highly alkylated, high solids, high imino melamine resin. Offers fast cure response at 120-150°C without need for strong acid catalysts, fast cure response in waterborne formulations, high film hardness, and low formaldehyde release on cure. Reacts with hydroxyl, carboxyl and amide functionality on polymers. Gives very low formaldehyde release.