To provide an improvement of a process for manufacturing a three-dimensional object by selective sintering by means of electromagnetic radiation of polymer powders, which results in improved mechanical properties of the manufactured objects.
The powder including a polymer or copolymer having at least one of the following structural characteristics is used: (1) a structure wherein at least one branching group is provided in the backbone chain of the polymer or copolymer, and in the case of the use of poly aryl ether ketones (PAEK), the branching group is an aromatic structural unit in the backbone chain of the polymer or copolymer; (2) a structure wherein at least one end group of the backbone chain of the polymer or copolymer is modified; (3) a structure wherein at least one bulky group within the backbone chain of the polymer of copolymer is provided, and in the case of the use of poly aryl ether ketones (PAEK), the bulky group is not selected from the group consisting of phenylene, biphenylene, naphthalene and CH2- or isopropylidene-linked aromatics; (4) a structure wherein at least one aromatic group non-linearly linking the backbone chain is provided.
MUELLER FRANK (DE)
LEUTERER MARTIN (DE)
| JP2007523774A | 2007-08-23 | |||
| JP2005089863A | 2005-04-07 | |||
| JP2003506229A | 2003-02-18 | |||
| JPH07501765A | 1995-02-23 | |||
| JP2007039631A | 2007-02-15 |
| WO2008057844A1 | 2008-05-15 | |||
| WO2009114715A2 | 2009-09-17 | |||
| WO2005097475A1 | 2005-10-20 |
Shuichi Fukuda
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