| abstract |
Disclosed is a polymer dispersion which can be produced without an emulsifier or a large amount of solvent and which produces a coating having good mechanical and optical properties. In the first step, polymer P) is prepared by polymerizing a free radical copolymerizable vinyl monomer mixture in the presence of a reactant of glycidyl versatic acid and dicarboxylic acid, and then in the second step. Polymer P) with one or more polyester polyols having a hydroxyl number of 10 to 500 mg KOH / g solids and an acid number of> 0.5 to ≦ 30 mg KOH / g solids, before or after the addition of the neutralizing agent, In a further step, a production process comprising dispersing the resulting polymer mixture in water, the resulting hydroxy-functional polyester-polyacrylate polymer aqueous dispersion, an aqueous coating composition containing said dispersion. [Selection figure] None |