Abstract
Abstract Titanium butoxide tris(5H-octafluoropentanoate), Ti(OnC4H9)[OCO(CF2)4H]3, titanium butoxide tris(7H-undecafluoroheptanoate), Ti(OnC4H9)[OCO(CF2)6H]3, titanium butoxide tris(9H-hexadecafluorononanoate), Ti(OnC4H9)[OCO(CF2)8H]3, and titanium butoxide tris(perfluorooctanoate), Ti(OnC4H9)[OCO(CF2)6CF3]3, were prepared by the reaction of titanium butoxide trichloride with sodium fluoro-substituted acylates in 1,1,2-trichloro-1,2,2-trifluoroethane. These compounds were characterized on the basis of elemental analysis as well as their IR, 1H NMR, 13C NMR, and 19F NMR spectra. In the compounds produced, a Ti–OCO bond was stable in water, although a Ti–OR bond was only moderately stable in water. A surface modification against calcium carbonate was attempted by using these products. From measurements of the contact angles θ(°) of water and toluene against a modified calcium carbonate surface, titanium butoxide tris(perfluorooctanoate) was found to be an effective substance for a new-type coupling agent, which increases the affinity between organofluoro polymers and some inorganic substances.
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