Pulverulent composition based on PAEK(s), sintering construction process and object derived therefrom

A pulverulent composition comprising a powder based on at least one polyaryl ether ketone (PAEK), said composition having at least one first endothermic peak and at least one second endothermic peak,

• the at least one first endothermic peak having a peak temperature of strictly more than 280° C., and
• the at least one second endothermic peak having a peak temperature within a range of 200° C. to 280° C.;
• wherein the at least one first endothermic peak and the at least one second endothermic peak are measured on a thermogram obtained by differential scanning calorimetry according to the standard ISO 11357-3:2018, on first heating, using a temperature ramp of 20° C./min;
• in which the enthalpy measured between 225° C. and 280° C. represents from 15% to 50% of the total enthalpy measured between 225° C. and 330° C. on said thermogram;
• the powder comprising a first powder P1 and a second powder P2, the first powder P1 and the second powder P2 being based, independently or not of one another, on said at least one PAEK;
• wherein the first powder P1 has the at least one first endothermic peak with the peak temperature strictly more than 280° C., and possesses no endothermic peak having a peak temperature of less than or equal to 280° C.;
• and
• wherein the second powder P2 has the at least one second endothermic peak having a peak temperature within a range of 200° C. to 280° C.