An object of the present invention is to provide a carpet exhibiting excellent antifouling property against both dry soil and wet soil. The carpet is a carpet including a pile yarn having a coated pile single yarn, in which the coated pile single yarn is a pile single yarn to which a layer A containing organopolysiloxane and a fluorine-based compound is attached, a fineness of the coated pile single yarn is 8 to 40 dtex, a crimp elongation of the pile yarn is 10% to 30%, a carpet staining degree (ΔE) in an antifouling dry test is 30 or less, and a carpet staining degree (ΔE) in an antifouling wet test is 30 or less.

An object of the present invention is to provide a carpet exhibiting excellent antifouling property against both dry soil and wet soil. The carpet is a carpet including a pile yarn having a coated pile single yarn, in which the coated pile single yarn is a pile single yarn to which a layer A containing organopolysiloxane and a fluorine-based compound is attached, a fineness of the coated pile single yarn is 8 to 40 dtex, a crimp elongation of the pile yarn is 10% to 30%, a carpet staining degree (ΔE) in an antifouling dry test is 30 or less, and a carpet staining degree (ΔE) in an antifouling wet test is 30 or less.

Provided is a water- and oil-repellent agent composition that is capable of producing an article having a high water pressure resistance and a low water absorption rate. The water- and oil-repellent agent composition contains a fluorine-containing polymer having a unit based on a monomer (a), a unit based on a monomer (b1), a unit based on a monomer (b2), a unit based on a monomer (b3), and a unit based on a monomer (c), wherein relative to all the units that constitute the fluorine-containing polymer, the proportion of the unit based on the monomer (a) is from 70 to 80% by mass, the proportion of the combination of the unit based on the monomer (b1), the unit based on the monomer (b2) and the unit based on the monomer (b3) is from 12 to 28% by mass, and the proportion of the unit based on the monomer (c) is from 2 to 8% by mass. Monomer (a): a compound represented by (Z-Q).sub.nX. Monomer (b1): a monomer not having a polyfluoroalkyl group (R.sup.f group), but having an alkyl group of 22 carbon atoms. Monomer (b2): a monomer not having an R.sup.f group, but having an alkyl group of 20 carbon atoms. Monomer (b3): a monomer not having an R.sup.f group, but having an alkyl group of 18 carbon atoms. Monomer (c): a halogenated olefin.

The present disclosure relates to a fiber for manufacturing a stretchable hydrophobic fiber article, the fiber including silica nanoparticles which are surface-modified such that the silica nanoparticles include a hydrocarbon chain, and a styrene-based thermoplastic elastomer, a stretchable hydrophobic fiber article manufactured therefrom, and a manufacturing method thereof. A fiber and a fiber article according to the present disclosure may have high hydrophobicity, preferably both superhydrophobicity and elasticity. Further, as the fiber and fiber article have excellent mechanical stability and chemical durability, the fiber and fiber article may stably exhibit the aforementioned high hydrophobicity and elasticity even under the harsh conditions.

The present invention relates to functional fibers, that is, sweat-absorptive quick-drying fibers through which moisture, such as sweat discharged from the skin, is quickly discharged to the outside to be dried. A sweat-absorptive quick-drying composition including a water repellent for fibers as a material applied on the fibers further includes water-repellent microcapsules and wasabi antibacterial microcapsules respectively obtained by performing micro-encapsulation of the water repellent for fibers and wasabi oil. Accordingly, it is possible to ensure a very stable water-repellent function by using a water-repellent-functional-processing agent subjected to micro-encapsulation treatment, unlike conventional fibers subjected to sweat-absorptive quick-drying treatment.

To provide a fluorinated copolymer dispersion, whereby it is possible to obtain an article being excellent in water-and-oil repellency and less susceptible to a decrease in the water-and-oil repellency by alkali, etc. and which presents little impact to the environment by an organic solvent; a method for its production; and an article which is excellent in water-and-oil repellency and is less susceptible to a decrease in the water-and-oil repellency by alkali, etc. The fluorinated copolymer dispersion comprises an aqueous medium and a fluorinated copolymer dispersed in the aqueous medium, wherein the fluorinated copolymer has units based on the following monomer (a) and units based on the following monomer (b), the proportion of the units based on the monomer (a) being from 20 to 60 mol % to all units constituting the fluorinated copolymer, and the fluorinated copolymer has a number average molecular weight of from 10,000 to 100,000: Monomer (a): a compound represented by CH.sub.2═CH—R.sup.f (R.sup.f is a C.sub.1-8 perfluoroalkyl group); and Monomer (b): a monomer copolymerizable with the monomer (a).

The present invention provides a water-repellent woven or knitted article that overcomes the problems of the related art and exhibits water-repellent properties and is excellent in abrasion resistance and durability. The water-repellent woven or knitted article of the present invention is a woven or knitted article subjected to a water repellent treatment using a water repellent having a perfluorooctanoic acid (PFOA) concentration of 5 ng/g or less, wherein the woven or knitted article includes, as constituent fibers, fibers having a transverse cross-sectional shape, each fiber has a plurality of grooves at an outer circumference of the transverse cross section, each groove has a wide part, and a size of the grooves in the fibers satisfies the following Formulae (Formula 1) and (Formula 2):

w2/w1≥1.3  (Formula 1)

0.15≤h/d≤0.25  (Formula 2) where w1 represents a groove entrance width, w2 represents a groove wide part width, h represents a groove depth, and d represents a diameter of the fiber, a droplet contact angle between the woven or knitted article and water is 135° or more after 20 times of washing in accordance with a method of JIS L 0217 103 and a water repellency is grade 4 or more in accordance with a spray method of JIS L 1092.

In one embodiment, a fabric is treated by creating a treatment solution comprising a fluid repellant and an antimicrobial compound, creating a treatment foam from the treatment solution, and applying the treatment foam to only an outer side of a fabric so as to coat the outer side of the fabric with the fluid repellant and the antimicrobial compound without coating an inner side of the fabric with the fluid repellant and the antimicrobial compound.

Provided is a fluorinated polymer that can impart excellent washing durability and water- and oil-repellency to fibers, said fluorinated polymer having a repeating unit derived from a fluorinated monomer (a) that comprises a first fluorinated monomer (a1) represented by the formula: CH.sub.2═C(—X.sup.1)—C(═O)—Y.sup.1—Z.sup.1—Rf.sup.1 [wherein X.sup.1 represents a halogen atom; Y.sup.1 represents —O— or —NH—; Z.sup.1 represents a direct bond or a bivalent organic group; and Rf.sup.1 represents a fluoroalkyl group having 1 to 20 carbon atoms] and a second fluorinated monomer (a2) represented by the formula: CH.sub.2═C(—X.sup.2)—C(═O)—Y.sup.2—Z.sup.2—Rf.sup.2 [wherein X.sup.2 represents a monovalent organic group or a hydrogen atom; Y.sup.2 represents —O— or —NH—; Z.sup.2 represents a direct bond or a bivalent organic group; and Rf.sup.2 represents a fluoroalkyl group having 1 to 20 carbon atoms].

Composition, comprising at least components (A) and (B) and optionally at least one of components (C) to (E): (A) polyacrylate obtained in the polymerisation of components (M1) CH.sub.2═CR.sup.3COO—R.sup.1 with (M2) CH.sub.2═CR.sup.3COO—R.sup.2 and optionally (M3) CH.sub.2═CR.sup.3—X—R.sup.4
(B) wax
(C) blocked isocyanate
(D) organic polysiloxane;
(E) melamine resin;
wherein
R.sup.1 is a residue containing from 1 to 8 carbon atoms;
R.sup.2 is a residue containing from 9 to 40 carbon atoms;
R.sup.3=H, CH.sub.3, C.sub.2H.sub.5;
X=COO, CONH
R.sup.4=glycidyl or CH.sub.2(CH.sub.2).sub.n—OR.sup.5, wherein n is an integer in the range of from 1-10 and R.sup.5 is H or a residue containing from 1 to 6 carbon atoms;
and wherein the composition is based on water and/or an organic solvent and is fluorine-free.