A method of treating a fabric, including a treatment step of subjecting the fabric to an aqueous liquor which includes an anionic surfactant and from about 100 ppm to about 7,000 ppm of an acidifying agent wherein the treatment step is not followed by a rinse off step.

A method of treating a fabric, including a treatment step of subjecting the fabric to an aqueous liquor which includes an anionic surfactant and from about 100 ppm to about 7,000 ppm of an acidifying agent wherein the treatment step is not followed by a rinse off step.

A water permeability-imparting agent containing an alkylene oxide adduct (A) of a polyvalent active hydrogen compound represented by Formula (1):

R—[O(A.sup.1O).sub.m—(CH.sub.2CH.sub.2O).sub.n—H].sub.1   (1)

wherein R represents a residue, after removal of all active hydrogen, of the polyvalent active hydrogen compound; A.sup.1O represents a C2 to C4 alkyleneoxy group; m represents an average addition mole number of A.sup.1O and is a number of 4 to 50; n represents an average addition mole number of CH.sub.2CH.sub.2O; and 1 represents a valence and is an integer of 3 to 6, and an average addition mole number ratio between A.sup.1O and CH.sub.2CH.sub.2O in Formula (1), n/m, is 0 to 0.5.

A water permeability-imparting agent containing an alkylene oxide adduct (A) of a polyvalent active hydrogen compound represented by Formula (1):

R—[O(A.sup.1O).sub.m—(CH.sub.2CH.sub.2O).sub.n—H].sub.1   (1)

wherein R represents a residue, after removal of all active hydrogen, of the polyvalent active hydrogen compound; A.sup.1O represents a C2 to C4 alkyleneoxy group; m represents an average addition mole number of A.sup.1O and is a number of 4 to 50; n represents an average addition mole number of CH.sub.2CH.sub.2O; and 1 represents a valence and is an integer of 3 to 6, and an average addition mole number ratio between A.sup.1O and CH.sub.2CH.sub.2O in Formula (1), n/m, is 0 to 0.5.

[Problem] To provide a sizing-agent-coated carbon fiber bundle in which, even when the sizing-agent-coated carbon fiber bundle has superior handling properties, the sizing agent on the sizing-agent-coated carbon fiber bundle exhibits excellent solubility in water and the adhesion amount of remaining sizing agent is reduced. [Solution] A sizing-agent-coated carbon fiber bundle obtained by applying polyethylene glycol and/or a surfactant to a carbon fiber bundle as a sizing agent, wherein all of the following conditions (i)-(iii) are satisfied. (i) The adhesion amount of the sizing agent is 0.15-0.80 parts by mass (inclusive) per 100 mass parts of the sizing-agent-coated carbon fiber bundle 100. (ii) The dry F-F friction coefficient is 0.39 or less. (iii) The adhesion amount of the sizing agent after washing for 50 seconds under the conditions disclosed in the specification is 0.12 parts by mass or less per 100 parts by mass of the sizing-agent-coated carbon fiber bundle 100.

The present invention is a softening base agent containing a compound represented by the following formula 1:

##STR00001## wherein each of R.sup.1 and R.sup.2 represents a hydrocarbon group with 6 or more and 24 or less carbons, and the total number of carbons in R.sup.1 and R.sup.2 is 18 or more and 30 or less; and M is a cation, excluding a hydrogen ion.

[Object] The present invention provides a sulfonated fine cellulose fiber having excellent viscosity and the like, as well as a sulfonated fine cellulose fiber production method capable of efficiently producing the sulfonated fine cellulose fibers.

[Method for Achieving the Object] A fine cellulose fiber obtained by fibrillating a cellulose fiber wherein a part of the hydroxyl groups of the fine cellulose fiber is substituted with sulfo groups, and an introduction amount of sulfur attributable to the sulfo groups is higher than 0.42 mmol/g. The fine cellulose fiber comprises a plurality of unit fibers and has an average fiber width of 30 nm or less. A dispersion liquid in which the fine cellulose fiber is dispersed in a water-soluble solvent at a solid concentration of 0.5% by mass has a viscosity of 5,000 mPa.Math.s or more at 25° C. This makes it possible to obtain the desired viscosity when the fine cellulose fibers are dispersed in a dispersion liquid.

[Object] The present invention provides a sulfonated fine cellulose fiber having excellent viscosity and the like, as well as a sulfonated fine cellulose fiber production method capable of efficiently producing the sulfonated fine cellulose fibers.

[Method for Achieving the Object] A fine cellulose fiber obtained by fibrillating a cellulose fiber wherein a part of the hydroxyl groups of the fine cellulose fiber is substituted with sulfo groups, and an introduction amount of sulfur attributable to the sulfo groups is higher than 0.42 mmol/g. The fine cellulose fiber comprises a plurality of unit fibers and has an average fiber width of 30 nm or less. A dispersion liquid in which the fine cellulose fiber is dispersed in a water-soluble solvent at a solid concentration of 0.5% by mass has a viscosity of 5,000 mPa.Math.s or more at 25° C. This makes it possible to obtain the desired viscosity when the fine cellulose fibers are dispersed in a dispersion liquid.

The present invention provides a detergent composition for textile products, containing the following component (A) and component (B): component (A): an internal olefin sulfonate having 16 or more and 18 or less carbons; and component (B): an alkyl sulfate having 12 or more and 14 or less carbons.

A lightweight heat-preserving fiber and a preparation method thereof are provided, wherein the fiber is prepared by measuring, composite spinneret's extruding, cooling, oiling, drawing, heat setting and winding a polyester melt. The composite spinneret has a hollow spinning hole and a circular spinning hole. The ratio of the micropore length of hollow spinning hole to circular spinning hole equals to the ratio of the equivalent diameter of hollow spinning hole to circular spinning hole multiplies the coefficient K, and the equivalent diameter is the ratio of the cross-sectional area to the circumference of the cross-section, the coefficient K ranges from 0.97 to 1.03. The oil agent contains a crown ether, and the content of the crown ether ranges from 67.30 to 85.58 wt %. The thermal conductivity of a knitted fabric having a basis weight of 100 g/m.sup.2 prepared by lightweight heat-preserving fiber is no larger than 0.150 W/m.Math.K.