LOW FORMALDEHYDE EMITTING CROSSLINKING AGENTS

摘要

Described is a liquid, partially alkoxymethylated melamine cross-linker composition having from about 2.6 to about 4.6 moles of combined formaldehyd e per mole of melamine, from about 1.4 to about 4.4 moles of alkyl per mole of melamine, from about 1.3 to about 3.4 moles of NH per mole of melamine, a fr ee formaldehyde level of less than about 0.5 weight percent based on 100 percen t solids, and an N-methylol level of less than about 6.0 weight percent; processes for its preparation; a low formaldehyde emitting curable compositi on containing the cross-linker; as well as a method of coating a substrate and substrates so coated.