One of the objects of the present invention is to provide a fiber treatment agent consisting of an aqueous silicone dispersion capable of quickly forming a silicone elastomer coating having elongation and strength on room-temperature drying and to provide a coating which is the dry product. Further, the object of the present invention is to provide a coating on room-temperature drying without using a high activity catalyst such as organotin compounds. The present invention provides a fiber treatment agent comprising 100 parts by mass of (A) a silicone elastomer which is an addition-reaction product of the following component (A-1) with the following components (A-2) and (A-3): (A-1) an alkenyl group-containing organopolysiloxane having two or more alkenyl groups per molecule, (A-2) an organohydrogen polysiloxane having three or more hydrosilyl groups per molecule, (A-3) a linear diorganohydrogen polysiloxane having hydrosilyl groups only at both molecular chain terminals; 0.1 to 8 parts by mass of at least one surfactant selected from (B) anionic surfactants and (C) nonionic surfactants, 3 to 35 parts by mass of (D) colloidal silica, and 15 to 200 parts by mass of (E) water, relative to total 100 parts by mass of components (A) and (D).

Crosslinked aminosiloxanes obtainable by reaction of identical or different aminosiloxanes with identical or different epoxide components which are water-soluble hydrocarbons, the hydrocarbons comprising oxygen as well as carbon, and optionally further elements selected from nitrogen, sulphur and phosphorus, the hydrocarbon having on average more than one terminal epoxy group, the epoxy group being a carbooxirane radical, and, further, not more than 50% of all the amino groups having undergone reaction with an epoxide group.

Provided is a sizing agent for synthetic fibers, the sizing agent including an organo-modified silicone represented by the following General Formula (1):

##STR00001##

in which in Formula (1), R.sup.1 represents a hydrogen atom, a methyl group or an ethyl group; R.sup.2 represents a group represented by the following General Formula (2); R.sup.3 represents a hydrocarbon group having 8 to 40 carbon atoms and having an aromatic ring, or an alkyl group having 3 to 22 carbon atoms; R.sup.4 represents a group similar to R.sup.1, R.sup.2 or R.sup.3; in a case in which there are numerous R.sup.1, R.sup.2, R.sup.3 or R.sup.4, the substituents may be respectively identical with or different from each other; x represents an integer of 0 or more; y and z each represent an integer of 1 or more; and (x+y+z) is 10 to 200,

##STR00002##

in which in Formula (2), R.sup.5 represents an alkylene group having 2 to 6 carbon atoms; AO represents an alkyleneoxy group having 2 to 4 carbon atoms; R.sup.6 represents an alkylene group having 1 to 6 carbon atoms; c represents an integer from 0 to 4; f represents an integer of 0 or 1; and Ep represents a group represented by the following Formula (3) or the following Formula (4):

##STR00003##

Provided is a sizing agent for synthetic fibers, the sizing agent including an organo-modified silicone represented by the following General Formula (1):

##STR00001##

in which in Formula (1), R.sup.1 represents a hydrogen atom, a methyl group or an ethyl group; R.sup.2 represents a group represented by the following General Formula (2); R.sup.3 represents a hydrocarbon group having 8 to 40 carbon atoms and having an aromatic ring, or an alkyl group having 3 to 22 carbon atoms; R.sup.4 represents a group similar to R.sup.1, R.sup.2 or R.sup.3; in a case in which there are numerous R.sup.1, R.sup.2, R.sup.3 or R.sup.4, the substituents may be respectively identical with or different from each other; x represents an integer of 0 or more; y and z each represent an integer of 1 or more; and (x+y+z) is 10 to 200,

##STR00002##

in which in Formula (2), R.sup.5 represents an alkylene group having 2 to 6 carbon atoms; AO represents an alkyleneoxy group having 2 to 4 carbon atoms; R.sup.6 represents an alkylene group having 1 to 6 carbon atoms; c represents an integer from 0 to 4; f represents an integer of 0 or 1; and Ep represents a group represented by the following Formula (3) or the following Formula (4):

##STR00003##

A composition for the treatment of fiber, yarn and fabrics, said composition comprising at least one highly dispersible clay nanoparticle component, at least one silicone polymer component; and water. Also provided is fiber surface treated with these compositions as well as articles including yarns, fabrics and carpets of the surface treated fiber.

A composition for the treatment of fiber, yarn and fabrics, said composition comprising at least one highly dispersible clay nanoparticle component, at least one silicone polymer component; and water. Also provided is fiber surface treated with these compositions as well as articles including yarns, fabrics and carpets of the surface treated fiber.

A softening agent composition including (1) a silicone polymer, (2) a water-repellent polymer, (3) an emulsifier, and (4) a liquid medium that is water or a mixture of water and an organic solvent. Also disclosed is a method for producing the softening agent composition which includes producing a water-repellent polymer by polymerizing, in the presence of the silicone polymer, a monomer that constitutes the water-repellent polymer. The water-repellent polymer may be at least one selected from the group consisting of fluorine-containing polymers and non-fluorine-containing polymers. Also disclosed is a method for treating a substrate with the softening agent composition and a substrate treated with the softening agent composition.

A human hair fiber treatment agent for treating human hair fibers separated from the human head and artificially fixed at one part of the longitudinal direction, wherein the human hair fiber treatment agent comprises the following components (A) to (C) in the formulation thereof, and the content of the component (A) is 1% by mass or more: (A): formaldehyde or a hydrate thereof; (B): a melamine derivative represented by the formula (1) wherein R.sup.1 to R.sup.3 each represent a hydrogen atom, a hydroxymethylamino group, a hydroxy group, a halogen atom, a phenyl group, a linear or branched alkyl group or alkenyl group having 1 or more and 6 or less carbon atoms, or a linear or branched alkoxy group or alkenyloxy group having 1 or more and 6 or less carbon atoms; and (C): water.

##STR00001##

A human hair fiber treatment agent for treating human hair fibers separated from the human head and artificially fixed at one part of the longitudinal direction, wherein the human hair fiber treatment agent comprises the following components (A) to (C) in the formulation thereof, and the content of the component (A) is 1% by mass or more: (A): formaldehyde or a hydrate thereof; (B): a melamine derivative represented by the formula (1) wherein R.sup.1 to R.sup.3 each represent a hydrogen atom, a hydroxymethylamino group, a hydroxy group, a halogen atom, a phenyl group, a linear or branched alkyl group or alkenyl group having 1 or more and 6 or less carbon atoms, or a linear or branched alkoxy group or alkenyloxy group having 1 or more and 6 or less carbon atoms; and (C): water.

##STR00001##

This fiber-treating agent includes a nitrogen-atom-containing polysiloxane synthesizable from an inexpensive raw material and excelling in preservation stability that is represented by formula (1) and/or a reaction product of the nitrogen-atom-containing polysiloxane with an epoxy compound. This fiber-treating agent makes is possible to add good flexibility and highly durable water-absorbing properties to a fiber.

##STR00001##

(R.sup.2 is an unsubstituted or a halogen-substituted 1-20C univalent hydrocarbon group, R.sup.2 is a univalent organic group containing at least one nitrogen atom, R.sup.3 is R.sup.1 or an ethoxy group, at least one of which is an ethoxy group, R.sup.4 is a hydroxyl group or OSiR.sup.2R.sup.3R.sup.3, and a is an integer from 2 to 2,000.)