AQUOSA DISPERSION OF POLYURETHANE, USE OF POLYURETHANE DISPERSION AND PRE-POLYMER COMPLETED BY ISOCYANATE

摘要

Aqueous dispersion of polyurethane, use of polyurethane dispersion and pre -polymer finished by isocyanate. This invention disseminates polyurethane dispersions based on aliphatic isocyanates that form hard coatings and coatings also have good solvent -resistant properties. Improved coating opriates are achieved including 1 to 8 percent by weight of a high functionality polyol in the polyol formulation to produce dispersions.