Process for manufacturing a dispersion of a vinylidene fluoride polymer

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United States of America Patent

PATENT NO 9920141
SERIAL NO

13516017

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Abstract

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A process for manufacturing a dispersions of a vinylidene fluoride (VDF) thermoplastic polymer [polymer (F)], said process comprising polymerizing VDF in an aqueous phase comprising:

    at least one surfactant selected from the group consisting of non-fluorinated surfactants [surfactant (HS)] and fluorinated surfactants having a molecular weight of less than 400 [surfactant (FS)]; andat least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R′F)] and at least one functional group, said functional PFPE having a number average molecular weight of at least 1000 and a solubility in water of less than 1% by weight at 25° C.,wherein said functional PFPE is present in the aqueous phase in an amount of 0.001 to 0.3 g/l.

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Patent Owner(s)

Patent OwnerAddress
SOLVAY SPECIALTY POLYMERS ITALY S P A20021 BOLLATE (MI)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kent, Bradley Lane Woolwich Township, US 21 58
Spada, Fabrizio Chelsea, AU 4 13

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