WATER-REPELLING AND OIL-REPELLING AGENT COMPOSITION, WATER AND OIL REPELLENT TREATMENT METHOD, AND WATER-REPELLING AND OIL-REPELLING FIBER

摘要

The invention provides a water- and oil-repellent agent composition which has a high base material absorbability and can impart high oil repellency and water repellency to a base material. The water- and oil-repellent agent composition includes a copolymer (A), a cationic surfactant (B), an aqueous medium (C), and a polyether-modified polydimethylsiloxane (D), wherein particles comprising the copolymer (A) are dispersed in the aqueous medium (C); the copolymer (A) comprises a constitutional unit based on a monomer (a1) consisting of an alkyl (meth)acrylate in which a part other than a (meth)acryloyloxy group is a hydrocarbon structure, and a constitutional unit based on a monomer (a2) consisting of a compound having an ethylenically unsaturated bond and an amide bond; and the polyether-modified polydimethylsiloxane (D) is a compound obtained by substituting a part or all of hydrogen atoms of methyl groups of the polydimethylsiloxane with a polyether chain.