Polyoxymethylene - molding compositions with improved thermal stability, processes for their preparation and their use

摘要

with improved thermal stability, high polyoxymethylen - containing $(a) 40 to 99.8 wt.% of a polyoxymethylen homo - and / or copolymerisates $a (b) 0.1 to 5% by weight.-% of a networked and teilveretherten melamine formaldehyde kondensates with a mean particle size of 0.1 to 10 m, obtained by condensation in aqueous solution of teilverethertem, methyloliertem melamine with a melamine formaldehyde molverhu00e4ltnis to 1: 1.0 to 6 at a ph of 1 to 5 and a temperature of 30 to 100 c, in the presence of a schutzkolloides and spru00fchtrocknung the formed dispersion $a (c) from 0.1 to 5 wt.% of a stabilizer $a (d) 0 to 50 wt.% of reinforcement and / or fu00fcllstoffes.