Powdered composition of polyarylene ether ketone ketone that enables an excellent castability / cohesion balance suitable for laser sintering

摘要

Descriptive summary: A polyarylene ether ketone ketone powder composition that allows for an excellent castability / cohesive balance suitable for laser sintering. The present invention comprises a composition comprising 99.6 to 99.99% by weight of at least one polyarylene ether ketone powder and 0.01 to 0.4% by weight of a hydrophilic fluidizing agent. About. This hydrophilic fluidizing agent is characterized by a mass increase (amount of absorbed water) of more than 0.5% after 5 days adjustment at 95% relative humidity. This mass increase of the fluidizing agent is determined by Karl Fischer measurements after desorption of water by treatment at 170 ° C. for 5 minutes. This composition is suitable for laser sintering. Specifically, it provides an excellent castability / cohesion balance for the powder. [Selection] Figure 1