Water- and oil-repellent treatment of textile

A treatment liquid usable in a method of treating a textile, comprising steps of:

• (1) preparing an emulsion of a water- and oil-repellent agent,
• (2) adding a cationic emulsifying agent to the prepared water- and oil-repellent agent to obtain a treatment liquid comprising the water- and oil-repellent agent and a stain blocking agent,
• (3) adjusting pH of the treatment liquid to at most 7,
• (4) applying the treatment liquid to a textile,
• (5) treating the textile with steam, and
• (6) washing the textile with water and dehydrating the textile,
• wherein the cationic emulsifying agent is selected from the group consisting of a monoalkyl ammonium salt, a dialkyl ammonium salt, a trialkyl ammonium salt, a dipoloxyethylene alkyl methyl ammonium salt, a dipolyoxyethylene alkyl amine, a fatty acid amide of dipolyoxyethylene, and an alkyl amine wherein the number of carbon atoms of the alkyl group is from 1 to 22 and the total number of oxyethylene groups in the molecule is from 2 to 40,
• wherein the water- and oil-repellent agent comprises at least one fluorine-containing compound which is a fluorine-containing low molecular weight compound comprising:
• (I) a repeating unit derived from a monomer having a fluoroalkyl group, represented by the formula:
• Rf—A—OCOCR11═CH2
• wherein Rf is a fluoroalkyl group having 3 to 21 carbon atoms, R11 is a hydrogen atom or a methyl group, and A is a divalent organic group, and
• (II) a repeating unit derived from a fluorine-free monomer which comprises at least one selected from a fluorine-free monomer which comprises at least one selected from the group consisting of vinyl halide and vinylidene halide, and
• wherein the cationic emulsifying agent is added in an amount of 33.3 to 333.3 parts by weight based on 100 parts (solid content) by weight of the fluorine-containing compound.