Patent ID: 11920008
Assignee: EVONIK OPERATIONS GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A process for producing a polymer composition for selective absorbing sintering or selective inhibition sintering, the process comprising:
a) at least partly dissolving a polymer in a solvent at a temperature of 10 K to 60 K above a dissolution temperature of the polymer, and then
b) reducing the temperature down to a precipitation temperature to obtain the polymer composition in the form of a suspension;
wherein the polymer composition comprises open mesopores, and wherein a cumulative pore volume distribution of the mesopores, measured according to DIN 66134, is 0.01 to 0.15 cm3/g and
said polymer is at least one selected from the group consisting of a polyaryl ether ketone, a polyester, a polyvinyl chloride, a polyacetal, a polypropylene, a polyethylene, a polystyrene, a polycarbonate, a polymethylmethacrylimide, a polymethylmethacrylate and a polyamide.