US 12,071,540 B2
Polymer filaments for additive manufacturing having reduced emissions
Judith Vandewinckel, Livonia, NY (US); Mark Mercandetti, Victor, NY (US); Angela Schnuerch, Naples, NY (US); and James Winters, Alfred Station, NY (US)
Assigned to Xerox Corporation, Norwalk, CT (US)
Filed by Xerox Corporation, Norwalk, CT (US)
Filed on Jun. 1, 2021, as Appl. No. 17/335,697.
Prior Publication US 2022/0380592 A1, Dec. 1, 2022
Int. Cl. C08L 55/02 (2006.01); B29C 64/118 (2017.01); B33Y 70/00 (2020.01); B33Y 70/10 (2020.01); C08K 11/00 (2006.01); C08L 97/02 (2006.01)
CPC C08L 55/02 (2013.01) [B29C 64/118 (2017.08); B33Y 70/00 (2014.12); B33Y 70/10 (2020.01); C08K 11/005 (2013.01); C08L 97/02 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A polymer filament compatible with fused filament fabrication, comprising:
a thermoplastic polymer;
wherein the thermoplastic polymer is not a polylactic acid; and
a bio-based additive admixed with the thermoplastic polymer in an effective amount to decrease total volatile organic compound (TVOC) emissions under additive manufacturing conditions, as determined by gas chromatography and measured relative to the thermoplastic polymer alone, by at least about 10% on a weight basis;
wherein 1) the bio-based additive comprises coffee grounds, grain waste, or any combination thereof, and the thermoplastic polymer is a poly(acrylonitrile-butadiene-styrene) polymer, or 2) the bio-based additive comprises brewer's spent grain;
wherein the bio-based additive is admixed with the thermoplastic polymer at about 0.05 wt. % to about 10 wt. % based on total mass, and
wherein the polymer filament has a diameter ranging from about 1.5 mm to about 3.5 mm.