PROCESS FOR THE PREPARATION OF DISPERSIONS OF ANIONIC WATERPROOF POLYMER CONTAINING NON-VOLATILE TERTIARY AMINE, THE DISPERSION AND COVERAGE OBTAINED RESULT FROM THIS DISPERSION.

摘要

A process for the preparation of an aqueous dispersion of an anionic polyurethane in which initially a tertiary functional amino acrylic monomer of formula IO R¹R²C = CCO-R³-NR4R5 ¿R Where, R, R¹, R², R³, R4 and R5 are organic groups that do not show reactivity towards the double bond or tertiary amine function, is used as a neutralizing agent for carboxylic acid groups hung in dispersions of a polyurethane or polyurethane / polyacrylate, where unsaturated monomers undergo in addition polymerization by addition, optionally together with other unsaturated monomers, characterized in that the aqueous dispersion of the anionic polyurethane is prepared by following the steps of: - preparation of an isocyanate functional anionic polyurethane prepolymer, optionally in the presence of vinyl monomers - mixing of an isocyanate terminated anionic polyurethane prepolymer with a tertiary amino functional unsaturated monomer, and optionalm among other vinyl monomers - followed by dispersion of the mixture obtained in water, and elongation of the polyurethane prepolymer chain with an active hydrogen compound during or after dispersion in water, - initiation of the radical polymerization of vinyl monomers, including tertiary amino functional unsaturated monomers.