Polyoxymethylene laser sintering powder, process for its production, and moldings produced from this laser sintering powder
AssigneeBASF SE
InventorsClaus Dallner, Steffen Funkhauser, Frank Müller, Jürgen Demeter, Mark Völkel
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Abstract
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.
Claims6
A polyoxymethylene powder which is intended for selective laser sintering and which has 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.
Dependencies are inferred from the claim text.