highly alkylated melamine resin

highly alkylated melamine resins in this category are similar to commercial methyl etherified hexahydroxymethyl melamine (HMMM), with the only difference being the type of alkyl alcohol used. Alkylated resins are made up of a combination of methoxy groups and alkoxy (ethoxy, n-butoxy, or isobutoxy) with longer chain lengths, and they are distinguished by the degree of alkylation and the amount of monomers. The longer chain length of the alkoxy group gives the resin lower viscosity, improved leveling and interlaminar adhesion. This series of products are high-efficiency crosslinkers containing hydroxyl, carboxyl and amide groups of functional polymers, most of which have an effective equivalent of 140-200. Other advantages are low VOC and high flexibility of the curing film when using flexible body resin.

high iminomine alkylated melamine resin

this class of high imide melamine resins is similar to the high imide melatherized melamine resin series (partially methyl etherified and highly alkyl etherified), with the difference being the different types of alkyl alcohols used, which are composed of a combination of methoxy and n-butoxy groups. Butoxy groups improve resin leveling and interlayer adhesion. Like the methyl etherification series, they mainly contain a large number of alkoxy/imine groups or alkoxy/NH functional groups in their structure. Its advantages are that it can be cured quickly at 120-150°C without the addition of acidic catalysts, fast curing in water-based systems, high paint film hardness, and low formaldehyde emission during curing. In addition, they can react with functional polymers containing hydroxy, carboxyl and amide groups, but these resins are also very prone to self-condensation reactions, and their effective equivalents are usually 200-250. The stability of the formulation can be increased by adding amines and alcohol solvents.