An object of the present invention is to provide a ligand-immobilized sea-island composite fiber in which generation of fine particles due to peeling of a sea component from an island component and generation of fine particles due to destruction of a fragile sea component are both suppressed. The present invention provides a sea-island composite fiber comprising a sea component and island components, in which a value (L/S) obtained by dividing the average total length (L) of the perimeter of all island components in a cross section perpendicular to the fiber axis by the average cross-sectional area (S) of the cross section is from 1.0 to 50.0 μm.sup.−1, a distance from the surface to the outermost island component is 1.9 μm or less, and an amino group-containing compound is covalently bonded to a polymer constituting the sea component at a charge density of 0.1 μmol or more and less than 500 μmol per 1 gram dry weight.

A product for incorporating ultraviolet radiation protection and antimicrobial protection into a synthetic polymer is disclosed which has a quantity of zinc oxide particles modified with a layer of a reactive group that forms a bond with a quantity of synthetic polymer chips having C—H bonds. A product for incorporating ultraviolet radiation protection and antimicrobial protection into a synthetic polymer prior to forming a synthetic material is also disclosed which has a quantity of synthetic polymer chips and a quantity of zinc oxide particles modified with a layer of a reactive group that forms a bond with the quantity of the synthetic polymer chips.

The present invention relates to a method for producing fine hydrophobically modified cellulose fibers wherein anionic group-containing anionically modified cellulose fibers are bound to a modifying group, the method including subjecting hydrophobically modified cellulose fibers having an average fiber length of 1 m or more and 1,000 m or less to a finely pulverizing treatment in an organic solvent. The fine hydrophobically modified cellulose fibers obtained by the method for production of the present invention can be suitably used in various resin manufactured articles for daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and various industrial applications such as automobile parts.

Polyester-free cotton is obtained from a fabric and/or fibers containing polyester and cotton by reacting the fabric and/or fibers with an amine organocatalyst and/or carboxylic acid salt of same and an alcohol solvent. The reaction, which may be run in batches or as a continuous flow process, recovers (i) polyester-free cotton as a solid inert by-product of the reaction, (ii) the amine organocatalyst and/or carboxylic acid salt of same for reuse, (iii) a polyester monomer product, and (iv) unreacted alcohol. The reaction works on any polyester-cotton fabric and/or fibers, including those that have at least one additional material, such as polyethers polyolefins, polyurethanes, nylon, rayon, acetate, viscose, modal, acrylic, wool, and combinations thereof.

Polyester-free cotton is obtained from a fabric and/or fibers containing polyester and cotton by reacting the fabric and/or fibers with an amine organocatalyst and/or carboxylic acid salt of same and an alcohol solvent. The reaction, which may be run in batches or as a continuous flow process, recovers (i) polyester-free cotton as a solid inert by-product of the reaction, (ii) the amine organocatalyst and/or carboxylic acid salt of same for reuse, (iii) a polyester monomer product, and (iv) unreacted alcohol. The reaction works on any polyester-cotton fabric and/or fibers, including those that have at least one additional material, such as polyethers polyolefins, polyurethanes, nylon, rayon, acetate, viscose, modal, acrylic, wool, and combinations thereof.

A dustproof fabric which includes an antistatic dustproof fabric having excellent antistatic properties, a high air permeability and high-level dustproof properties is provided. The antistatic dustproof fabric includes two or more fiber layers. At least one of the two or more fiber layers is a fiber layer 1 containing an antistatic agent. The polarity of the antistatic agent is opposite to the polarity of the zeta potential of the fiber layer 1. At least one of the two or more fiber layers is a fiber layer 2 which is electrically charged.

The surface of a carbon fiber is electrochemically treated by a method to form nitrogen containing groups on the surface of the carbon fiber. The method comprises contacting a carbon fiber surface with an aqueous solution comprised of a non-cyclic aliphatic amine and water soluble inorganic hydroxide with said aqueous solution having a pH of at least 9. A positive electrical bias is then applied to the carbon fibers in the aqueous solution relative to another electrode in contact with the aqueous solution, wherein the positive electrical bias is at a voltage above the oxidation potential of water. The treated carbon fibers are useful for making epoxy reinforced carbon fiber composites.

The present invention relates to a fabric material-based flexible electrode and a manufacturing method thereof, and a fabric material-based flexible electrode according to the present invention comprises: a substrate (10) including multiple fibers (11) crossing each other; a bonding layer (20), on the substrate (10), including an amine group (NH2)-containing monomolecular substance adsorbed thereon; a nanoparticle layer (30), on the bonding layer (20), having metallic nanoparticles (31) coated thereon; and a plating layer (40), on the nanoparticle layer (30), having a predetermined metal electroplated thereon.

A dryer sheet for incorporating ultraviolet radiation protection and antimicrobial protection into clothing has a carrier substrate, a quantity of dipalmethyl hydroxyethylammonium methosulfate, a fatty acid, and clay, and a quantity of zinc oxide particles each having a surface treated with an acid polymer with the acid polymer binding to the surfaces of the zinc oxide particles.

An oil agent for a carbon fiber precursor is provided that contains a base component, a cationic surfactant, and a nonionic surfactant, wherein the cationic surfactant is a specific nitrogen-containing compound.