Functionalized fluoropolyethers
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United States of America Patent
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Aug 29, 1995
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N/A
app pub date -
Feb 24, 1994
filing date -
Apr 20, 1989
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Abstract
Fluoropolyethers having functional groups, consisting of randomly distributed sequences of perfluoropolyoxyalkylene units selected from: ##STR1## and included in one of the following formulas: ##STR2## where X is F or CF.sub.3 T, T', T'=a perfluoroalkyl group containing from 1 to 3 carbon atoms and one or two atoms of Cl, Br or I; R, R'=halogen atoms; Y=a functional group; o, q=numbers, zero included, such that o+q=1-20; n=a number ranging from 1 to 15; m/n=a number ranging from 0.01 to 0.5; p=a number ranging from 1 to 20; s/p=a number ranging from 0.5 to 2; and z/o+p=a number ranging from 0.01 to 0.05.
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