Fluoroelastomers Containing Copolymerized Units of Vinyl Esters

In order to fully develop physical properties such as tensile strength, elongation, and compression set, perfluoro elastomers must be cured. Perfluoro elastomers containing vinyl acetate units were prepared that, when saponified with sodium hydroxide, provide hydroxyl cure sites. 

Preparation of Poly(Tetrafluorene-co-Perfluoro(MethyMnyl Ether)-co-Vinyl Acetate) 

A 1-liter stainless reactor was charged with 450 ml of water, ammonium perfluorononante (3.0 g), disodium phosphate heptahydrate (2.0 g), ammonium persulfate (0.4 g), and vinyl acetate (5.0 g). The reactor was sealed, treated with tetrafluoroethylene (45 g) and perfluoro(methylvinyl ether) (40 g), and heated to 70°C for 8 hours 

TABLE 1. Summary of random co-vinyl acetate derivatives prepared by emulsion polymerization using ammonium persulfate as the free radical initiator. 

Note Vinyl acetate derivatives was saponified using sodium hydroxide. 

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Title Fluoroelastomers Containing Copolymerized Units of Vinyl Esters... 

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