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US 7,252,980 B2Granted
Polymer extraction methods
AssigneeMetabolix, Inc.
InventorsJohan Van Walsem, Luhua Zhong, Simon S. Shih
Life of this patent
Estimating the term…
Abstract
Polymer extraction methods are disclosed.
Claims30
A method of separating a polymer from a biomass containing the polymer, the method comprising:
- contacting the biomass with a solvent system, including a solvent for the polymer and a precipitant for the polymer, to provide a residual biomass and a solution that includes the polymer, the solvent for the polymer and the precipitant for the polymer;
- and
- applying a centrifugal force to the solution and residual biomass to separate at least some of the solution from the residual biomass;
- wherein the polymer comprises a PHA and the method separates the polymer from the biomass.
1 more element
The method of chum 1, wherein the solvent for the polymer has a solubility in water of than about one percent.
Dependencies are inferred from the claim text.