Invention Grant
- Patent Title: Polyoxymethylene laser sintering powder, process for its production, and moldings produced from this laser sintering powder
- Patent Title (中): 聚甲醛激光烧结粉，其生产工艺及由该激光烧结粉制成的模制品
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Application No.: US13503990Application Date: 2010-10-26
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Publication No.: US08795833B2Publication Date: 2014-08-05
- Inventor: Claus Dallner , Steffen Funkhauser , Frank Müller , Jürgen Demeter , Mark Völkel
- Applicant: Claus Dallner , Steffen Funkhauser , Frank Müller , Jürgen Demeter , Mark Völkel
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Drinker Biddle & Reath LLP
- Priority: EP09174163 20091027
- International Application: PCT/EP2010/066107 WO 20101026
- International Announcement: WO2011/051250 WO 20110505
- Main IPC: C08K5/10
- IPC: C08K5/10 ; C08K5/103 ; B32B5/16
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 Mnfrom 22 000 to 25 000 g/mol Mwfrom 60 000 to 140 000 g/mol Mw/Mnfrom 3 to 5 MVRfrom 15 to 70 [cm3/10 min] d50 average particle size60 μm Particle sizefrom 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.
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