POLYOXYMETHYLENE LASER SINTERING POWDER, PROCESS FOR ITS PRODUCTION, AND MOLDINGS PRODUCED FROM THIS LASER SINTERING POWDER

摘要

The invention relates to a polyoxymethylene (POM) powder for use in a selective laser sintering process and having the following parameters: Isothermal crystallization time (at 152°C) 3 min Mn from 22 000 to 25 000 g/mol Mw from 60 000 to 140 000 g/mol Mw/Mn from 3 to 5 MVR from 15 to 70 cm3/10 min d50 average particle size 60 µm Particle size from 30 to 130 µm. A process for producing the powder, and also moldings produced from this powder by a selective laser sintering process, are also described.