Perfluoroalkyl compounds
AssigneeCiba-Geigy Corporation
InventorArmin Hiestand
Life of this patent
Estimating the term…
Abstract
New perfluoroalkyl compounds of the formula R.sub.f --CH.sub.2 CH.sub.2 --SO.sub.x C.sub.m H.sub.2m A, wherein R.sub.f is a perfluoroalkyl radical with 5 to 18 carbon atoms, A is carboxyl, carboxyl ester, carboxylic amide or cyano, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A is carboxyl, then m is only 1 if x is 1, are provided. These new compounds are useful for producing oleophobic finishes on porous and non-porous substrates, e.g. textile materials. They are also useful as intermediates for the manufacture of further fluorine containing finishing agents.
Claims11
A perfluoroalkyl compound of the formula
- R.sub.f --CH.sub.2 CH.sub.2 --SO.sub.x --C.sub.m H.sub.2m A
- wherein
- R.sub.f is a perfluoroalkyl radical with 5 to 18 carbon atoms,
- A is COOH, COOR,
- R is alkyl with 1 to 20 carbon atoms,
- x is 1 or 2 and
- m is a whole number from 1 to 3, with the proviso that when A is carboxyl, then m is only 1 if x is 1.
Dependencies are inferred from the claim text.