	US 12,091,569 B2
	Ethylene-vinyl ester polymers for additive-manufacture feedstock
Juliana Breda Soares, Pittsburgh, PA (US); Jacob Fallon, Pittsburgh, PA (US); Dillan Passos Bernardes, Pittsburgh, PA (US); Mauro Alfredo Soto Oviedo, Pittsburgh, PA (US); Nei Sebastião Domingues, Jr., Pittsburgh, PA (US); Manoela Ellwanger Cangussu, Pittsburgh, PA (US); Michelle K. Sing, Pittsburgh, PA (US); and Jorge Manuel Jardim Da Silva, Pittsburgh, PA (US)
Assigned to BRASKEM AMERICA, INC., Philadelphia, PA (US)
Filed by BRASKEM AMERICA, INC., Philadelphia, PA (US)
Filed on May 13, 2022, as Appl. No. 17/744,486.
Claims priority of provisional application 63/188,933, filed on May 14, 2021.
Prior Publication US 2022/0389262 A1, Dec. 8, 2022
Int. Cl. C09D 123/08 (2006.01); B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); C08F 210/02 (2006.01); B29K 23/00 (2006.01); B29K 105/16 (2006.01)

CPC C09D 123/0853 (2013.01) [B29C 64/118 (2017.08); B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); C08F 210/02 (2013.01); B29K 2023/083 (2013.01); B29K 2105/16 (2013.01); C08F 2800/20 (2013.01)]

30 Claims

1. An additive-manufacture feedstock, comprising

an ethylene-vinyl ester polymer, the ethylene-vinyl ester polymer having:

a melt flow rate of from 0.1 to 150 g/10 min (190° C./2.16 kg), measured according to ASTM D 1238, and

a vinyl ester content of from 1.0 to 30 wt %, relative to 100 wt % of the ethylene-vinyl ester polymer,

wherein the ethylene-vinyl ester polymer exhibits a Shore A hardness of at least 60, and

wherein the ethylene-vinyl ester polymer, in neat form, has an elastic modulus of from 10 to 1500 MPa, measured according to ASTM D 638, and/or a melt viscosity of from 100 to 1000 Pa·s, measured at a shear rate of 1000 s⁻¹.