US 12,391,846 B2
Prepolymer with multiple functional groups for printing three-dimensional objects and method of using the same
Guang Zhu, Ningbo (CN); Yisi Lu, Ningbo (CN); Jie Gao, Ningbo (CN); and Fan Zhang, Ningbo (CN)
Assigned to LUXCREO (BEIJING) INC., Beijing (CN)
Filed by LUXCREO (BEIJING) INC., Beijing (CN)
Filed on Dec. 2, 2021, as Appl. No. 17/457,260.
Application 17/457,260 is a continuation of application No. PCT/CN2020/100049, filed on Jul. 3, 2020.
Claims priority of provisional application 62/872,062, filed on Jul. 9, 2019.
Prior Publication US 2022/0089903 A1, Mar. 24, 2022
Int. Cl. C09D 175/16 (2006.01); B29C 64/129 (2017.01); B29K 75/00 (2006.01); B29K 105/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08G 18/12 (2006.01); C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/48 (2006.01); C08G 18/67 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C09D 175/12 (2006.01)
CPC C09D 175/16 (2013.01) [B29C 64/129 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08G 18/12 (2013.01); C08G 18/246 (2013.01); C08G 18/286 (2013.01); C08G 18/4854 (2013.01); C08G 18/6755 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C09D 175/12 (2013.01); B29K 2075/00 (2013.01); B29K 2105/0002 (2013.01)] 19 Claims
 
1. A prepolymer compound of formula X:

OG Complex Work Unit Chemistry
wherein:
Z is a blocking group;
R1, R2, and A are each independently selected a hydrocarbyl group;
R′ is NH or O; and
Y comprises an amino alcohol or diamine moiety, wherein an amino group side of the amino alcohol moiety is attached to the prepolymer compound and a hydroxyl functional group of the amino alcohol moiety is at a free end; an amino group of the diamine moiety is attached to the prepolymer compound and another amino functional group of the diamine moiety is at the free end.