[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.

Provided are staple fibers for air laid capable of improving dispersibility, and a method for producing the same. The staple fibers for air laid are characterized by including stable fibers to which a fiber treatment agent containing a hydrophilic oil agent and a silicone-containing oil agent is adhered in an amount of 0.7 to 2 wt % of a weight of the staple fibers, wherein a weight ratio of the hydrophilic oil agent and the silicone-containing oil agent contained in the fiber treatment agent (a weight of the hydrophilic oil agent/a weight of the silicone-containing oil agent) is within a range of 60/40 to 90/10, and a moisture content is 2 to 13%.

Provided are staple fibers for air laid capable of improving dispersibility, and a method for producing the same. The staple fibers for air laid are characterized by including stable fibers to which a fiber treatment agent containing a hydrophilic oil agent and a silicone-containing oil agent is adhered in an amount of 0.7 to 2 wt % of a weight of the staple fibers, wherein a weight ratio of the hydrophilic oil agent and the silicone-containing oil agent contained in the fiber treatment agent (a weight of the hydrophilic oil agent/a weight of the silicone-containing oil agent) is within a range of 60/40 to 90/10, and a moisture content is 2 to 13%.

The present invention comprises the coating and modification of textile materials in order to provide them with water-repellent properties. The object of the invention was to hydrophobize textiles loaded with metal oxide, wherein the hydrophobing agent presented here is non-toxic and environmentally friendly, adhering to the metal oxide surface considerably more stably and without the use of additional dispersants and binders, which also takes environmental aspects into account. The object is achieved by the use according to the invention of metal oxide particles and/or metal hydroxide particles of group IVB, IIB or IIIA or mixtures thereof, wherein said particles are present in a size range of 110 nm-10 μm, for the coating of textile materials and their treatment after application to the textile with phosphoric or phosphonic acid ester derivatives of the general form OP(OH).sub.2OR or OP(OH).sub.2R, wherein R is a hydrophobic residue in the form of aliphatic, branched or unbranched, alicyclic or aromatic hydrocarbon groups having 5-40 carbon atoms.

An ink jet composition according to the present disclosure contains a flameproofing agent and resin particles. The resin particles are preferably urethanic resin particles. It is preferable that a urethanic resin making up the urethanic resin particles is a urethanic resin containing a crosslinking group and the crosslinking group is one or more selected from the group consisting of a blocked isocyanate group and a silanol group. The urethanic resin making up the urethanic resin particles preferably has a polycarbonate skeleton.

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.

A biomaterial may be produced by employing bacterial nanocellulose which are biologically functional and can be enhanced via an enzyme tanning treatment, to form a functional biotextile that has improved functionality and various desirable and/or enhanced properties.

A composition to be used for providing permanent hydrophilic finishing of textile fibers and textile products made thereof consists of at least one anionic surfactant based on a neutralized phosphoric acid ester of a fatty alcohol having at least 12 C-atoms in a proportion of 25 to 80 weight percent, a non-ionic consistency enhancer in a proportion of 10 to 50 weight percent, a hydrophilically modified polyalkylsiloxane in a proportion of 3 to 35 weight percent and a hydrotropic dispersion additive in a proportion of 0 to 5 weight percent, each based on the total weight of the composition. The composition is preferably present as a granulate and has a melting point of at least 45° C.

A composition to be used for providing permanent hydrophilic finishing of textile fibers and textile products made thereof consists of at least one anionic surfactant based on a neutralized phosphoric acid ester of a fatty alcohol having at least 12 C-atoms in a proportion of 25 to 80 weight percent, a non-ionic consistency enhancer in a proportion of 10 to 50 weight percent, a hydrophilically modified polyalkylsiloxane in a proportion of 3 to 35 weight percent and a hydrotropic dispersion additive in a proportion of 0 to 5 weight percent, each based on the total weight of the composition. The composition is preferably present as a granulate and has a melting point of at least 45° C.

A liquid film cleavage agent having a spreading coefficient of 15 mN/m or more to a liquid having surface tension of 50 mN/m, and a water solubility of 0 g or more and 0.025 g or less.