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US 2006/0148973 A1Published application
Process for preparing fluoropolymer dispersions
AssigneeSolvay Solexis S.p.A.
InventorsMarco Malvasi, Valeri Kapeliouchko
Life of this patent
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Abstract
A process to substantially remove fluorinated anionic surfactants from fluoropolymer dispersions comprising the following steps: a) addition to the fluoropolymer dispersion of one or more non fluorinated surfactants; b) contact of the dispersion with an anionic exchanger; c) separation of the dispersion from the anionic exchanger and recovery of the dispersion substantially fluorinated anionic surfactant free.
Claims18
A process to substantially remove fluorinated anionic surfactants from fluoropolymer dispersions comprising the following steps:
- a) addition to the fluoropolymer dispersion of one or more non fluorinated anionic surfactants;
- b) contact of the dispersion with an anionic exchanger;
- c) separation of the dispersion from the anionic exchanger and recovery of the dispersion substantially fluorinated anionic surfactant free.
Dependencies are inferred from the claim text.