Patent ID: 6787594
Filing Date: 2004-09-07
Classification: C08F,D04H

Abstract:
In a vinyl acetate based polymer emulsion formed by the emulsion polymerization of vinyl acetate and N-methylolacrylamide, optionally other monomers, in the presence of a stabilizing system and a redox catalyst system comprised of an oxidizing agent and a reducing agent, the improvement for reducing formaldehyde emissions in the resulting vinyl acetate based polymer emulsion, which comprises:forming said vinyl acetate based polymer emulsion utilizing as the reducing component of the redox catalyst system a reducing agent of the formula: where M is a hydrogen atom, an ammonium atom a monovalent metal ion or an equivalent of a divalent metal ion, R1 is OH or NR4R5 wherein R4 and R5 each are H or C1-Calkyl; R2 is H or an alkyl, alkenyl, cycloalkyl or aryl and R3 is CO2M.