Fine powder of polyamide from renewable materials and method for making such a powder
AssigneeArkema France
InventorsKarine Loyen, Eric Labonne
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Abstract
The present invention relates to a powder of polyamide PA (homopolyamide or copolyamide) derived at least partially from renewable materials, in which the particles have a nonspherical shape and a volume median diameter of less than or equal to 20 μm. The present invention also relates to a process for preparing such a powder.
Claims26
A polyamide (PA) powder comprising a homopolyamide or copolyamide derived at least partially from renewable materials, in which particles of the powder have a nonspherical, irregular shape, without sharp edges, and a volume median diameter within the range of from 5 to 20 μm, an absorption capacity, measured according to the DIN ISO 787N standard, within the range of from 55 to 110 g of oil/100 g of polyamide powder and a breaking strength of said powder, when it is compacted only by compression under one tonne, within the range of from 100 to 600 Newtons.
Dependencies are inferred from the claim text.