Fluorine-containing polymer aqueous dispersion
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United States of America Patent
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Jun 30, 2015
Grant Date -
Mar 28, 2013
app pub date -
May 13, 2011
filing date -
May 25, 2010
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Abstract
Disclosed is a fluorine-containing polymer aqueous dispersion in which a fluorine-containing polymer is dispersed using, as an emulsifier, a polyfluoroalkylphosphonic acid salt represented by the general formula:
wherein M1 is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base, M2 is an alkali metal, an ammonium base, or an organic amine base, n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3. This fluorine-containing polymer aqueous dispersion uses a polyfluoroalkylphosphonic acid salt with a low bioaccumulation potential as an emulsifier, and has excellent mechanical stability.
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