| 摘要 |
<p>Fluoropolyethers having functional groups, consisting of random distributed sequences of perfluoropolyoxyalkylene units selected from: ; -CF2-CF2-O-; -CF2O- ; and comprised in one of the following formulae: (I ) (II ) T'-O-(CF2CF2O)p(CF2O)s-CRR'-Y (III) where T, T', T" are a perfluoroalkyl group containing from 1 to 3 carbon atoms and one or two atoms of Cl, Br or I, R, R' are halogen atoms, Y is a functional group, o, q are numbers, zero included, such that o+q = 1-20, n are numbers ranging from 1 to 15, m/n is a ratio ranging from 0.01 to 0,5, p are numbers ranging from 1 to 20, s/p is a ratio ranging from 0.5 to 2, z/o+p is a ratio ranging from 0.01 to 0.05. These compounds are particularly capable of reacting with organic and inorganic substrates, as well as with end groups containing 1 or 2 atoms of a halogen different from fluorine. They can be used as surface modifiers for polymeric and inorganic materials, in order to impart properties, which are typical of the fluorinated products, such as water- and oil-repellency, low friction coefficients, low refraction index and the like.</p> |
