Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates

A process for providing soil resistance and resistance to staining by acid dyes to fibers and textiles comprising application to dyed or pigmented fibers and textiles, or application to fibers and textiles just prior to or during dyeing thereof, of an effective amount of a composition comprising a mixture of 1) a sulfonated phenol-formaldehyde condensation product which is useful as a dye-resist agent, a dye-fixing agent, a dye-reserving agent, or an agent which improves the wet-fastness of dyeings on polyamide fibers, and 2) a copolymer having units of formula II ##STR5## wherein D is a vinyl monomer selected from the group consisting of styrene, vinyl ether, and alpha olefin;

• M is H, alkali metal or ammonium cation;
• W is O, S, or a mixture thereof;
• N is a mixture of R' and R" in a molar ratio of M:R':R" of ›1-(e+g)!:e:g;
• R' is Rf-Ad-B-;
• R.sub.f is a fully fluorinated straight or branched aliphatic radical which can be interrupted by at least one oxygen atom;
• A is a divalent radical selected from the group consisting of --SO.sub.2 N(R)-, --CON(R)-, --S--, and --SO.sub.2 -- wherein R is H or a C.sub.1 to C.sub.6 alkyl radical;
• d is 0 or 1;
• B is a divalent linear hydrocarbon radical --CnH2n-- optionally endcapped by --(O--CH.sub.2 --CH.sub.2).sub.z --, --(O--CH.sub.2 --CH(CH.sub.3)).sub.z or --(O--CH.sub.2 --CH(CH.sub.2 C1)).sub.z -- wherein n is 2 to 12 and z is 0 to 50;
• R" is either a C.sub.1 to C.sub.30 alkyl group or a polysiloxane group of formula III ##STR6## wherein j is 5 to 20;
• e is 0.1 to 1.0;
• g is 0 to 0.5;
• h is 3 to 1000;
• and
• k is 3 to 1000.