Bis(trifluoroacetyl) peroxide was prepared in good yield by the reaction be
tween trifluoroacetic anhydride and sodium peroxide under anhydrous conditi
ons. polymers bearing benzene rings. polystyrene. poly(phenylene oxide) and
poly(diphenylacetylene) were modified chemically by the peroxide. The resu
lting trifluoromethylated polymers have good solubilities in common organic
solvents, and their cast films have good water repellency. The trifluorome
thylated poly(diphenylacetylene)s have high gas and vapor permeabilities. (
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