US 12,138,850 B2
Additive manufacturing using polyurea materials
David Robert Fenn, Allison Park, PA (US); Kurt G. Olson, Gibsonia, PA (US); Reza M. Rock, Pittsburgh, PA (US); Cynthia Kutchko, Allison Park, PA (US); Susan Donaldson, Allison Park, PA (US); and Anthony J. Fogl, Swissvale, PA (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
Filed on Nov. 10, 2020, as Appl. No. 17/093,886.
Application 17/093,886 is a continuation of application No. 16/423,474, filed on May 28, 2019, granted, now 10,864,673.
Application 16/423,474 is a continuation of application No. 15/680,846, filed on Aug. 18, 2017, granted, now 10,434,704, issued on Oct. 8, 2019.
Prior Publication US 2021/0206049 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 64/112 (2017.01); B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); C08G 18/10 (2006.01); C08G 18/32 (2006.01); C08G 18/38 (2006.01); C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 18/75 (2006.01); C08G 18/79 (2006.01); C08G 59/66 (2006.01); C08G 75/045 (2016.01); C08G 75/14 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C09D 175/02 (2006.01); C09D 175/04 (2006.01)
CPC B29C 64/112 (2017.08) [B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); C08G 18/10 (2013.01); C08G 18/3234 (2013.01); C08G 18/325 (2013.01); C08G 18/3821 (2013.01); C08G 18/755 (2013.01); C08G 59/66 (2013.01); C08G 75/045 (2013.01); C08G 75/14 (2013.01); C09D 175/02 (2013.01); C09D 175/04 (2013.01); C08G 18/3855 (2013.01); C08G 18/4854 (2013.01); C08G 18/5024 (2013.01); C08G 18/792 (2013.01); C08G 2150/50 (2013.01); C08K 3/046 (2017.05); C08K 3/36 (2013.01)] 20 Claims
 
1. A reactive additive manufacturing composition, comprising: a first compound having a first functional group;
a second compound having a second functional group, wherein the second functional group is reactive with the first functional group; and
a third compound having a third functional group, wherein the third functional group is reactive with the first functional group or the second functional group;
wherein the reactive additive manufacturing composition is characterized by a tack free time of greater than 3 minutes.