Back to results
US 2006/0223981 A1Published application
Method for removing contaminants from plastic resin
AssigneeHoneywell Federal Manufacturing & Technologies, LLC
InventorsGeorge Bohnert, Thomas Hand, Gary DeLaurentiis
Life of this patent
Estimating the term…
Abstract
A method for removing contaminants from synthetic resin material containers using a first organic solvent system and a second carbon dioxide system. The organic solvent is utilized for removing the contaminants from the synthetic resin material and the carbon dioxide is used to separate any residual organic solvent from the synthetic resin material.
Claims33
A method, comprising:
- exposing resin particles to a solvent, the solvent contacting the resin particles and substantially removing contaminants on the resin particles;
- separating the solvent from the resin particles;
- and
- exposing the resin particles to a solvent removing agent to substantially remove any residual solvent remaining on the resin particles after separation.
1 more element
Dependencies are inferred from the claim text.