Back to results
US 12,583,965 B2Granted
Polymerizations in supercritical carbon dioxide, products of same, and uses thereof
AssigneeCornell University
InventorsWen-Chyan Tsai, Yadong Wang
Life of this patent
Estimating the term…
Abstract
In various examples, methods of forming a polymer (e.g., a condensation polymer including but not limited to a polyester), include the steps of forming a mixture comprising one or more monomer(s), one or more biocatalyst(s), and carbon dioxide. In various examples, the methods are at least partially carried out in sub critical carbon dioxide or supercritical carbon dioxide. In various examples, a polymer is a condensation polymer. In various examples, a fabricated article, which may be a medical article, includes one or more polymer(s).
Claims21
A method of forming a polymer comprising:
- forming a mixture comprising:
- one or more monomer(s),
- wherein the monomer(s) is/are chosen from diacid monomers, polyol monomers, amino alcohol monomers, and combinations thereof;
- one or more biocatalyst(s);
- and
- supercritical carbon dioxide fluid or subcritical carbon dioxide liquid,
- wherein the mixture does not initially contain water, organic solvent(s), metal catalyst(s), metal(s) thereof, or combinations thereof, and
- continuously venting carbon dioxide out of the mixture, wherein continuously venting carbon dioxide out of the mixture maintains a total water content of the mixture at less than 3 wt. %,
- wherein the polymer is formed.
6 more elements
Dependencies are inferred from the claim text.