Laser sinter powder with a metal salt and a fatty acid...

Details Laser sinter powder with a metal salt and a fatty acid... Laser sinter powder with a metal salt and a fatty acid...

B - Operations, Transporting

29

C

B29C 67/04 (2006.01) C08F 22/36 (2006.01) C08J 3/12 (2006.01) C08J 3/14 (2006.01) C08J 3/20 (2006.01) C08J 5/00 (2006.01) C08K 3/26 (2006.01) C08K 5/04 (2006.01) C08K 5/09 (2006.01) C08K 5/098 (2006.01) C08K 5/10 (2006.01) C08K 5/101 (2006.01) C08K 5/138 (2006.01) C08K 5/20 (2006.01) C08L 77/00 (2006.01)

Patent

CA 2475759

Disclosed is a powder for selective laser sintering to form a three dimensional prototype. The powder comprises polyamide, a metal salt of a weak acid, such as a metal carbonate and a fatty acid derivative, such as a fatty acid amide. A molding formed by using the powder has a marked advantage in appearance and in surface finish when compared with conventional products, especially when recyclability of the powder. The molding produced from recycled sinter powder also has markedly improved mechanical properties when compared with recycled conventional nylon-12 powders, in particular in terms of modulus of elasticity and tensile strain at break. The molding also has a density approaching that of injection moldings.

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