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US 12,391,846 B2Granted
Prepolymer with multiple functional groups for printing three-dimensional objects and method of using the same
AssigneeLuxcreo (Beijing) Inc.
InventorsGuang Zhu, Yisi Lu, Jie Gao, Fan Zhang
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Abstract
A prepolymer with multiple functional groups is disclosed. The embodiments of the prepolymer may have the compound of formula X: A polymerizable liquid comprising such prepolymer that can be used for producing three-dimensional objects by methods of additive manufacturing and the method using such polymerizable liquid to form three-dimensional objects is also described.
Claims19
A prepolymer compound of formula X:
- 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.
4 more elements
A method of forming a three-dimensional object, comprising:
- providing a printing region defined by a forming platform and a resin reservoir having a forming surface;
- filling said printing region with a polymerizable liquid, said polymerizable liquid including a prepolymer compound and a photoinitiator, the prepolymer compound having formula X:
- 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;
- exposing said printing region filled with said polymerizable liquid to energy to form a solid printing intermediate having substantially the same shape as said three-dimensional object;
- and
- providing energy to said solid printing intermediate to form said three-dimensional object.
9 more elements
Dependencies are inferred from the claim text.