Fluorinated surfactants for making fluoropolymers

Details Fluorinated surfactants for making fluoropolymers Fluorinated surfactants for making fluoropolymers

2006-12-19

2010-11-23

Eashoo, Mark (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S214000, C562S586000, C524S544000, C524S805000, C427S180000

Reexamination Certificate

active

07838608

ABSTRACT:
The invention provides a fluorinated surfactant having the general formula:in-line-formulae description="In-line Formulae" end="lead"?[Rf—(O)t—CHF—(CF2)n—COO—]iXi+  (I)in-line-formulae description="In-line Formulae" end="tail"?wherein Rfrepresents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xi+represents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.

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