Invention Application
US20050027050A1 Laser sinter powder with a metal salt and a fatty acid derivative, process for its production, and moldings produced from this laser sinter powder
审中-公开
具有金属盐和脂肪酸衍生物的激光烧结粉末,其生产方法和由该激光烧结粉末制成的模制品
- Patent Title: Laser sinter powder with a metal salt and a fatty acid derivative, process for its production, and moldings produced from this laser sinter powder
- Patent Title (中): 具有金属盐和脂肪酸衍生物的激光烧结粉末,其生产方法和由该激光烧结粉末制成的模制品
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Application No.: US10901204Application Date: 2004-07-29
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Publication No.: US20050027050A1Publication Date: 2005-02-03
- Inventor: Sylvia Monsheimer , Maik Grebe , Franz-Erich Baumann
- Applicant: Sylvia Monsheimer , Maik Grebe , Franz-Erich Baumann
- Applicant Address: DE Marl
- Assignee: DEGUSSA AG
- Current Assignee: DEGUSSA AG
- Current Assignee Address: DE Marl
- Priority: DE10334496.9 20030729
- Main IPC: C08J3/20
- IPC: C08J3/20 ; B29C67/04 ; C08F22/36 ; C08G73/02 ; C08J3/00 ; C08J3/12 ; C08J3/14 ; C08J5/00 ; C08K3/08 ; C08K3/26 ; C08K5/04 ; C08K5/09 ; C08K5/098 ; C08K5/10 ; C08K5/101 ; C08K5/138 ; C08K5/20 ; C08L77/00

Abstract:
The present invention relates to a sinter powder composed of polyamide which also comprises metal salts of weak acids, in particular metal carbonates, and fatty acid derivatives, in particular fatty acid esters or fatty acid amides, 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 recyclability 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.
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