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US 12,709,698 B2Granted
Curable polymeric compositions
AssigneePoly-Med, Inc.
InventorsMichael Aaron Vaughn, Prabhjot Saini, Mathew Stanford, Hafiz Busari, Debra Tindall
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Abstract
Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA), wherein a composition of one or more photocurable compounds, such as a compound with multiple ethylenically unsaturated groups and a compound with multiple thiol groups, is photopolymerized, optionally in the presence of two or more thermocurable compounds which are reactive with one another and are subjected to thermopolymerization, to form a manufactured article in solid form.
Claims16
A composition comprising:
- a first organic compound (polySH) having multiple thiol groups (SH), wherein the first organic compound is bioabsorbable, and wherein polySH is a macromer;
- a second organic compound (polyEU) having multiple ethylenically unsaturated groups (EU), wherein the second organic compound is bioabsorbable, and wherein polyEU is a macromer;
- having an SH to EU equivalents ratio of X:Y, where X ranges from 25-75 and Y ranges from 75-25 and the sum of X and Y is 100;
- a photoinitiator, wherein the photoinitiator is in a total concentration of less than 1.0 wt %;
- and
- optionally a stabilizer;
- wherein the composition is bioabsorbable;
- and
- wherein the composition is substantially free of monomers.
6 more elements
Dependencies are inferred from the claim text.