PROCESS FOR THE MANUFACTURE OF AQUEOUS COATING AGENTS, THE COATING AGENTS AND THEIR USE

摘要

19 Herberts Gesellschaft mit beschr?nkter Haftung : A process for the manufacture of aqueous coating agents, obtained by mixing an aqueous dispersion of one or more water-dispersible or water-soluble binders that contain groups reactive with isocyanate with one or more polyisocyanates that are liquid or are present in liquid form as a result of the addition of organic solvents, as well as optionally pigments, fillers and/or customary lacquer additives, wherein an aqueous dispersion is used of one or more binders with a number-average molecular weight (Mn) of 1000 to 100,000, groups reactive with isocyanate equivalent to a hydroxyl number of 20 to 250 and an acid number of 10 to 100, whose acidic groups are at least partly neutralized by one or more polyamines with primary and/or secondary amino groups mixed with one or more tertiary monoamines, and the polyisocyanate that is liquid or present in liquid form is dispersed in this dispersion shortly before the use of the coating agents; and the coating agents obtained.