	US 11,739,230 B2
	Precipitation of polyether block amide and thermoplastic polyethylene to enhance operational window for three dimensional printing
Luke Rodgers, St. Petersburg, FL (US); and Erik Gjovik, St. Petersburg, FL (US)
Assigned to JABIL INC., St. Petersburg, FL (US)
Filed by JABIL INC., St. Petersburg, FL (US)
Filed on May 28, 2021, as Appl. No. 17/333,096.
Application 17/333,096 is a continuation of application No. 16/342,433, granted, now 11,046,857, previously published as PCT/US2017/056996, filed on Oct. 17, 2017.
Claims priority of provisional application 62/409,036, filed on Oct. 17, 2016.
Prior Publication US 2021/0284854 A1, Sep. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 11/102 (2014.01); C08J 3/14 (2006.01); C09D 11/108 (2014.01); C08L 101/00 (2006.01); C08K 7/22 (2006.01); C08G 69/40 (2006.01); C08K 9/04 (2006.01); B33Y 70/00 (2020.01)

CPC C09D 11/102 (2013.01) [B33Y 70/00 (2014.12); C08G 69/40 (2013.01); C08J 3/14 (2013.01); C08K 7/22 (2013.01); C08K 9/04 (2013.01); C08L 101/00 (2013.01); C09D 11/108 (2013.01); C08J 2323/00 (2013.01); C08J 2375/04 (2013.01); C08J 2377/00 (2013.01); C08J 2387/00 (2013.01)]

4 Claims

1. A polymer material suitable for three-dimensional printing, comprising a precipitated thermoplastic polyurethane, formed by a precipitation process comprising:

mixing a base thermoplastic polyurethane with laurolactam, 1,12-dodecanedioic acid, water, and aqueous hypophosphorous acid to form a composition;

heating the composition in an autoclave;

maintaining autogenic pressure from the composition in the autoclave;

stirring the composition in the autoclave;

depressurizing the autoclave to atmospheric pressure; and

passing nitrogen over the composition to complete the precipitation, wherein the precipitated thermoplastic polyurethane has a larger enthalpy upon melting compared to a baseline thermoplastic polyurethane.