Perfluoropropionyl peroxide

Solution polymerization of VDE in fluorinated and fluorochlorinated hydrocarbons such as CEC-113 and initiated with organic peroxides (99), especially bis(perfluoropropionyl) peroxide (100), has been claimed. Radiation-induced polymerization of VDE has also been investigated (101,102). Alkylboron compounds activated by oxygen initiate VDE polymerization in water or organic solvents (103,104). Microwave-stimulated, low pressure plasma polymerization of VDE gives polymer film that is <10 pm thick (105). Highly regular PVDE polymer with minimized defect stmcture was synthesized and claimed (106). Perdeuterated PVDE has also been prepared and described (107). 

Four perfluorodiacylperoxide free radical initiators were prepared by condensing perfluoroacyl chloride derivatives with hydrogen peroxide and sodium hydroxide. When the product bis(2-fluoro-2-trifluoromethyl-perfluoropropionyl) peroxide was used to polymerize vinylidene fluoride, a 90% conversion was observed. 

Perfluoroether monomers 3,5-dioxa-l-heptene, (I), and 3,5,8-trioxa-l-nonene, (II), were prepared by the author [1] and polymerized with tetrafluoroethylene using perfluoropropionyl-peroxide as the reaction initiator. 

In the work conducted by Chandrasekaran, " initiators for solvent-based polymerization included aliphatic and aromatic peroxy compounds, including fluorine and chlorine substituted organic peroxides. Specific examples are acetyl peroxide, succinic acid peroxide, 2,4-dichlorobenzoyl peroxide, t-butylper-oxypivalate, decanoyl peroxide, trichloroacetyl peroxide, and perfluoropropionyl peroxide. Aqueous polymerization was conducted using persulfate, perphosphate and perborate salts of sodium, potassium. 

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