C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/00 (2006.01) B29C 35/08 (2006.01) C08J 3/16 (2006.01) C08J 5/00 (2006.01) C08K 3/04 (2006.01) C08K 3/22 (2006.01) C08L 29/04 (2006.01) C08L 71/02 (2006.01)
Patent
CA 2583200
A process is proposed for production of a powder suitable for use in a process for the layer-by-layer moldless production of a three-dimensional shaped article, in which regions of the respective powder layer are selectively melted via input of electromagnetic energy, comprising mixing of a polymer or copolymer with at least one water-soluble polymeric polyol, the dissolution of the mixture in water to form a dispersion, the isolation of the polymer particles or copolymer particles from the dispersion, and the washing and drying of the isolated polymer particles or isolated copolymer particles, as also is a powder which comprises a polymer powder or copolymer powder with from 0.001% by weight to 5% by weight content of a polymeric polyol, the polymeric polyol having been selected from a group comprising polyethylene glycol and polyvinyl alcohol, as also is a use and a shaped article.
Komada Hajime
Matsui Hideki
Monsheimer Sylvia
Nakaie Yoshiki
Degussa Gmbh
Evonik Degussa Gmbh
Fetherstonhaugh & Co.
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