Process for manufacturing a dispersion of a vinylidene fluoride polymer
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United States of America Patent
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Mar 20, 2018
Issued Date -
N/A
app pub date -
Dec 15, 2010
filing date -
Dec 18, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
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 Citation Ranking
- 2 Citation Count
- C08F Class
- 38.55 % this patent is cited more than
- 7 Age
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