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US 2020/0046462 A1Published application
Dental materials using thermoset polymers
AssigneeAlign Technology, Inc.
InventorsYan CHEN, Chunhua LI, Srinivas KAZA, Neil Brian CRAMER, Mary Catherine BERARD
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Abstract
Provided herein are crosslinked polymers useful in orthodontic appliances and light polymerizable liquid compositions and formulations useful for making crosslinked polymers. Also provided are methods of making an orthodontic appliance comprising a cross-linked polymer formed by a direct fabrication technique.
Claims20
A light polymerizable liquid composition comprising:
- a first polymerizable component, wherein the first polymerizable component is a urethane (meth)acrylate oligomer;
- a second polymerizable component, wherein the second polymerizable component is a vinyl monomer or a thiol monomer;
- and
- a photoinitiator,
- wherein at least one of the first polymerizable component or the second polymerizable component comprises at least two polymerizable groups, and the viscosity of the light polymerizable liquid composition is less than 4000 cP at 25° C.
2 more elements
A light polymerizable liquid composition comprising:
- a first polymerizable component, wherein the first polymerizable component is a first urethane (meth)acrylate oligomer;
- a second polymerizable component, wherein the second polymerizable component is a first vinyl monomer not including a urethane linkage or a first thiol monomer not including a urethane linkage;
- a third polymerizable component, wherein the third polymerizable component is a second urethane (meth)acrylate oligomer or a second vinyl monomer not including a urethane linkage, or a second thiol monomer not including a urethane linkage;
- and
- a photoinitiator,
- wherein at least one of the first polymerizable component, the second polymerizable component, or the third polymerizable component comprises at least two polymerizable groups, and wherein the viscosity of the light polymerizable liquid composition is less than 700 cP at 25° C.
3 more elements
Dependencies are inferred from the claim text.