Process for producing poly(meth)acrylimide polymers in particle shape

摘要

The production of particulate polymers obtainable by reacting a polymer based on C1-C22-alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one primary amine RNH2, by … …  A) allowing a solution of the polymer to exit a nozzle in a multiplicity of liquid jets, …  B) causing the liquid jets to break up into drops having a narrow particle size distribution by setting the nozzle into longitudinal or transverse vibration or by pulsing the liquid in the nozzle or by providing a distance between exit from the nozzle and entry into a precipitation bath, …  C) precipitating the resultant drops by introduction into a precipitation bath containing a liquid in which the polymer is insoluble, …  D) removing solvent residues and other impurities present in the polymer particles, … and the use of the resultant particulate poly(meth)acrylimides for the production of mouldings, and moulding obtainable from these polymers.