| 摘要 |
The present invention provides new perfluoroalkylcarboxylic acid esters of the formula <IMAGE> <IMAGE> WHEREIN Rf is perfluoroalkyl with 4 to 18 carbon atoms, A represents a radical forming with the -NCO-N-group ethylene urea, hydantoin or isocyanurate radicals, m is a whole number from 1 to 3, q is 1 or 2 and x is 0, 1 or 2, with x being 0 or 1 if m is 1. The new compounds are useful for producing oil- and water-repellent finishes on porous and non-porous finishes, such as paper, textiles or plastics.
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