C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/12 (2006.01) B29C 67/04 (2006.01) C08K 5/098 (2006.01) C08L 77/00 (2006.01) C08L 77/02 (2006.01) C22B 1/16 (2006.01)
Patent
CA 2437153
The present invention relates to a sinter powder composed of polyamide which also comprises metal soaps, in particular particles of a salt of an alKanemonocarboxylic acid, to a process for laser sintering, and also to moldings produced from this sinter powder. The moldings formed using the powder of the invention have marked advantages In appearance and in surface finish when compared with conventional products, especially when recyclablilty in the selective laser sintering (SLS) process is taken Into account. Moldings produced from recycled sinter powder of the invention moreover also have markedly improved mechanical properties when compared with moldings based on recycled conventional nylon-12 powders, in particular in terms of modulus of elasticity and tensile strain at break. These moldings also have a density approaching that of injection moldings.
Baumann Franz-Erich
Christoph Wolfgang
Grebe Maik
Monsheimer Sylvia
Muegge Joachim
Degussa Ag
Evonik Degussa Gmbh
Fetherstonhaugh & Co.
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