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US 11,952,457 B2Granted
Bioabsorbable resin for additive manufacturing with non-cytotoxic photoinitiator
AssigneeCarbon, Inc.
InventorGina Michelle Policastro
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Abstract
A resin useful for producing objects is provided, which resin contains a photoinitiator of low cytotoxicity. The resins may be suitable for use in additive manufacturing techniques such as bottom-up and top-down stereolithography, produce objects that are bioresorbable and non-cytotoxic, and/or produce objects that are flexible or elastic. Methods of use of the resin and objects produced therefrom are also provided.
Claims26
A photopolymerizable resin useful for the additive manufacturing of a bioresorbable object, comprising:
- (a) from 5 percent by weight to 90 percent by weight of a photopolymerizable bioresorbable polyester oligomer;
- (b) from 1 percent by weight to 70 percent by weight of non-reactive diluent;
- (c) from 0.1 percent by weight to 10 percent by weight of dihydro-4,4-dimethyl-2,3-furandione (DDFD) photoinitiator;
- (d) an ultraviolet (UV) light absorber;
- (e) optionally, from 1 percent by weight to 50 percent by weight of reactive diluent;
- (f) optionally, from 1 percent by weight to 50 percent by weight of filler;
- and
- (g) optionally, from 1 percent by weight to 10 percent by weight of at least one additional cross-linking agent.
5 more elements
Dependencies are inferred from the claim text.