Patent ID: 7923388

Claim:
A fabric composed of polyolefin fiber, obtainable by a process comprising the following steps a) to c) of a) treating an untreated textile fabric consisting of polyolefin fiber to an extent in the range from 90% to 100% by weight in a plasma under such conditions that, after step a) has been carried out, the fabric has a surface tension in the range from 35 to 60 mN/m, b) treating the fabric obtained after step a) with a polyorganosiloxane containing R 3 Si—O— units as end groups and, within the polyorganosiloxane chain, units of the formula (I) —Si(R) 2 —O— (I) and units of the formula (II) —Si(R)(X)—O— (II) where each R is independently CH 3 , CH 2 —CH 3 or phenyl, and each X is a radical of the formula (III) where t is from 1 to 4, z is from 5 to 60, in each unit of the formula —O—CHR 1 —CHR 2 — one of R 1 and R 2 is H and the other is H or CH 3 and every R 3 present is H or is R, c) treating the fabric with a polymer containing perfluoroalkyl (RF) groups, this polymer being a polyacrylic polymer having RF groups or a polyurethane having RF groups or a mixture of such polymers, this step c) being carried out concurrently with step b) or later than step b).