Patent ID: 9611355
Date: 2017-04-04
CPC Classifications: B29B,B29C,B29K,B33Y,C08G,C08J,C08K,C08L,Y10T

Claim:
1. A powder composition, comprising: a laser-sinterable powder including at least 20 weight percent of a polyamide polymer component; wherein the polyamide polymer component includes one or more branched polyamide polymers in an amount that comprises at least 5 weight percent of the laser-sinterable powder, wherein the branched polyamide comprises a star polymer having a single branching unit and at least 3 oligomer or polymer arms covalently attached to the branching unit, wherein the single branching unit is formed from a polycarboxylic acid, wherein at least one of the oligomer or polymer arms comprises a reaction product of reactants including a C11-C20 amino acid, a C11-C20 lactam, or a mixture thereof, and wherein the powder composition has a melt enthalpy of less than 100 J/g and a sintering window of less than 40° C.