A fiber assembly including cellulose water-repellent fibers of the present invention is at least one selected from cotton, a fiber bundle, a yarn, and a gray fabric. A water-repellent agent is in a cross-linked state and fixed to the surface of cellulose fibers. A method for producing a fiber assembly including cellulose water-repellent fibers of the present invention includes applying a water-repellent agent to at least one fiber assembly selected from cotton, a fiber bundle, a yarn, and a gray fabric, and cross-linking the water-repellent agent to the surface of cellulose fibers by drying and then heat curing. Thus, the present invention provides a fiber assembly including cellulose water-repellent fibers that has durable water repellency, can be used for resist dyeing, and does not cause color transfer, a method for producing the fiber assembly, and a fiber product using the fiber assembly.

A fiber assembly including cellulose water-repellent fibers of the present invention is at least one selected from cotton, a fiber bundle, a yarn, and a gray fabric. A water-repellent agent is in a cross-linked state and fixed to the surface of cellulose fibers. A method for producing a fiber assembly including cellulose water-repellent fibers of the present invention includes applying a water-repellent agent to at least one fiber assembly selected from cotton, a fiber bundle, a yarn, and a gray fabric, and cross-linking the water-repellent agent to the surface of cellulose fibers by drying and then heat curing. Thus, the present invention provides a fiber assembly including cellulose water-repellent fibers that has durable water repellency, can be used for resist dyeing, and does not cause color transfer, a method for producing the fiber assembly, and a fiber product using the fiber assembly.

To provide a water/oil repellent composition whereby it is possible to obtain an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture, a method for producing said composition, and an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture. The water/oil repellent composition comprises a copolymer having units based on a monomer (a), units based on a monomer (b) and units based on a monomer (c), and a liquid medium. Monomer (a): a compound represented by (ZY).sub.nX (Z: a C.sub.1-6 perfluoroalkyl group, etc.; Y: a divalent organic group, etc.; n: 1 or 2; X: a polymerizable unsaturated group). Monomer (b): a (meth)acrylate having no polyfluoroalkyl group and having an alkyl group with at least 20 carbon atoms. Monomer (c): a compound represented by CH.sub.2CR.sup.1C(O)O[(C.sub.2H.sub.4O).sub.a(C.sub.4H.sub.8O).sub.b]H (R.sup.1: a hydrogen atom or a methyl group, and a/b=1 to 3).

To provide a water/oil repellent composition whereby it is possible to obtain an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture, a method for producing said composition, and an article which is excellent in each of water-repellency, oil-repellency, washing durability, heavy rain durability and texture. The water/oil repellent composition comprises a copolymer having units based on a monomer (a), units based on a monomer (b) and units based on a monomer (c), and a liquid medium. Monomer (a): a compound represented by (ZY).sub.nX (Z: a C.sub.1-6 perfluoroalkyl group, etc.; Y: a divalent organic group, etc.; n: 1 or 2; X: a polymerizable unsaturated group). Monomer (b): a (meth)acrylate having no polyfluoroalkyl group and having an alkyl group with at least 20 carbon atoms. Monomer (c): a compound represented by CH.sub.2CR.sup.1C(O)O[(C.sub.2H.sub.4O).sub.a(C.sub.4H.sub.8O).sub.b]H (R.sup.1: a hydrogen atom or a methyl group, and a/b=1 to 3).

A water- and oil-repellent agent contains cellulose nanofibers, a compound having at least one functional group of an oxazoline group, a carbodiimide group, an epoxy group and an isocyanate group, as a crosslinking agent, and a perfluoroalkyl compound.

A water- and oil-repellent agent contains cellulose nanofibers, a compound having at least one functional group of an oxazoline group, a carbodiimide group, an epoxy group and an isocyanate group, as a crosslinking agent, and a perfluoroalkyl compound.

A fluorochemical composition comprising: at least one fluorinated compound; and at least one esterquat or amidequat surfactant.

A fluorochemical composition comprising: at least one fluorinated compound; and at least one esterquat or amidequat surfactant.

To provide a water repellent composition whereby a moisture permeable waterproof film is rendered less likely to be peeled from an article treated by the water-repellent composition. The water repellent composition comprises a copolymer (A) having structural units based on a monomer (a) and structural units based on a monomer (b), a polymer (B) having an amino group, an ammonium salt group or an amide group as a pendant group, and an aqueous medium. The monomer (a) is a compound represented by R.sup.F-Q-ZC(O)C(R)CH.sub.2 (wherein R.sup.F is a C.sub.4-6 perfluoroalkyl group, Q is either a divalent hydrocarbon group containing no fluorine atom or a single bond, Z is O or NH, and R is a hydrogen atom, a methyl group or a chlorine atom).

The monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having a C.sub.12-22 alkyl group.

A fabric treatment composition is provided that includes at least one zeta potential modifier, a fluoropolymer and a hydrophobic agent with a melting point or glass transition temperature below 100 C., for imparting fabric protection benefits to a fabric, such as improved stain and soil resistance, oil repellency, water repellency, softness, wrinkle and damage resistance, and better hand feel. Fabric treatment compositions can be used as a pretreatment prior to washing, through soaking, or added to the treatment liquor, that is either the wash or rinse cycle of an automatic washing machine, to first provide and then maintain and refresh the fabric protection benefits imparted to the fabric, with the proviso that an intermediate rinsing step essentially devoid of added surfactant-is used after the washing cycle and prior to the fabric treatment step. Following use of a first treatment composition, protective benefits are maintained and refreshed by means of a second treatment operation employing a second treatment composition. The second treatment composition may have lower active levels of the protective agents to provide for economical and periodic maintenance of the imparted fabric protection benefits.