Patent ID: 8865250

Claim:
A process for producing pulverulent coating compositions comprising: providing an aqueous polymer dispersion comprising i) as component A, a polymer obtained by radical polymerization of a) N,N-diethylaminoethyl methacrylate, and b) at least one radically polymerizable compound selected from esters of α,β-ethylenically unsaturated mono- and dicarboxylic acids with C 1 -C 8 -alkanols; and spray processing the aqueous polymer dispersion with a spraying apparatus in the presence of a drying gas to provide a powder, wherein an entry temperature of the drying gas into the spraying apparatus is at least 20° C. above a glass transition temperature and is at least 20° C. above a minimum film-forming temperature of the polymer and an exit temperature of the drying gas from the spraying apparatus is maintained at 40 to 85° C.