9/28/2010
7,803,277
Process for removing fluorosurfactant from an aqueous fluoropolymer dispersion using sorbent pouches
Noelke et al of DuPont  developed a process for reducing the fluorosurfactant content of an aqueous fluoropolymer dispersion by filling a container with fluoropolymer dispersion, inserting into the container a fabric pouch containing a fluorosurfactant sorbent and, then, removing the fabric pouch.  (RDC 12/7/2010)

9/7/2010
7,790,041
Removing fluorosurfactant from aqueous fluoropolymer dispersions
Noelke of DuPont has developed a process for reducing the fluorosurfactant content of an aqueous fluoropolymer dispersion by filling a shipping container with fluoropolymer dispersion and contacting the dispersion with a fluorosurfactant sorbent in the shipping container to reduce fluorosurfactant content.  The sorbent is an ion exchange resin and is confined for convenient removal.  (RDC //28/2010)