Patent ID: 9388262
Filing Date: 2016-07-12
CPC Classification: C08F,C08J

Claim Text:
1. A process for producing a fluorinated olefin/vinyl alcohol copolymer, comprising: (1): emulsion polymerizing a fluorinated olefin of formula (1) and a vinyl ether of formula (2) in an aqueous medium comprising an emulsifier to obtain a fluorinated olefin/vinyl ether copolymer, wherein the mass ratio of the vinyl ether of formula (2) to the aqueous medium is from 5/95 to 70/30: wherein in formula (1), X in formula (2), R wherein said fluorinated olefin and said vinyl ether have an alternating copolymerization ratio of at least 95%; and (2): converting said fluorinated olefin/vinyl ether copolymer to a fluorinated olefin/vinyl alcohol copolymer by substituting R