摘要:
Three-dimensional shaped products are prepared by a layer-by-layer moldless production process in which at least one powder layer is provided, regions of the respective powder layer are selective melted via input of electromagnetic energy, wherein the powder of the powder layer contains at least one polymer powder or copolymer powder produced from a dispersion which contains at least one polymer or copolymer and which contains a water-soluble component, the water-soluble component containing at least one oligosaccharide.
摘要:
The present invention relates to a three-dimensional powder-based production process using powders based on cyclic oligomers, and to moldings produced by this process.
摘要:
A process 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; a powder which comprises a polymer powder or copolymer powder with from 0.001% by weight to 5% by weight content of at least one polymeric polyol, the polymeric polyol having been selected from the group consisting of polyethylene glycols and polyvinyl alcohols; the powder formed from the process; method of using the powder; and a shaped article formed from the powder.