Fluoropolymer produced by aqueous polymerization using...

Details Fluoropolymer produced by aqueous polymerization using... Fluoropolymer produced by aqueous polymerization using...

2009-12-18

2011-11-15

Egwim, Kelechi (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S201000, C526S203000, C526S243000, C524S457000

Reexamination Certificate

active

08058376

ABSTRACT:
A process for making an aqueous dispersion of fluoropolymer particles by polymerizing in a first polymerization step at least one fluorinated monomer having an ionic group in an aqueous polymerization medium in the presence of initiator, the polymerizing providing dispersed particulate of fluorinated ionomer, and polymerizing in a second polymerization step at least one fluorinated monomer in the aqueous polymerization medium in the presence of the dispersed particulate of fluorinated ionomer and initiator to form the aqueous dispersion of particles of fluoropolymer.

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Apostolo, Marco et al, “Properties of Fluoroelastomer/Semicrystalline Perfluoropolymer Nano-Blends”, Journal of Fluorine Chemistry, 125 (2004) 303-314.

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