Abstract: Problem To provide a polyurethane elastic yarn having good heat setting properties in a wide temperature range and high thermal adhesive strength in a wide temperature range while also maintaining its elastic properties (permanent deformation and elongation). Solution A polyurethane elastic yarn comprising polyurethane polymer [A] and polyurethane polymer [B] below, wherein the ratio of polyurethane polymer [A] to polyurethane polymer [B] in terms of parts by mass is from 1:99 to 30:70 or from 70:30 to 99:1, the exothermic peak (crystallization peak) of the polyurethane elastic yarn as measured by a differential scanning calorimeter (DSC) is in the range from 110° C. to 210° C., and the heat capacity at the exothermic peak is 3.0 J/g or more and 100 J/g or less.

Abstract: Elastic yarn wound body packages able to simplify processing of a tail yarn of an elastic yarn when manufacturing a fabric, or the like, continuously by simultaneous vertical take-up unwinding of a multistage elastic yarn through providing elastic yarn wound body packages on a multistage stand are provided. The elastic yarn wound body package comprises a paper tube and an elastic yarn wound body, wherein: the paper tube has a groove in the circumferential direction, perpendicular to the paper tube axis, between an end portion of the elastic yarn wound body and an end portion of the paper tube; a tail yarn of the elastic yarn wound body is wound into the groove; and a wire-shaped object or tape-shaped object that crosses at least a portion of the yarn bundle of the tail yarn is held thereby.

Abstract: A composite laminate is provided with improved appearance aesthetics and functionality for use in disposable diaper and hygiene products, providing particularly low elongation dependency of unload power, and a soft feel. The composite laminate body has a plurality of elastic fibers arranged in parallel in one direction, interposed between two sheets of cloth; and resin bonding the elastic fibers and the two sheets of cloth, provided in a plurality of strands arranged to be parallel in one direction that intersects with the elastic fibers; wherein the two sheets of cloth and the elastic fibers are separated between locations where adjacent resin strands and elastic fibers intersect in the longitudinal direction of the elastic fibers.

Abstract: Elastic yarn wound body packages able to simplify processing of a tail yarn of an elastic yarn when manufacturing a fabric, or the like, continuously by simultaneous vertical take-up unwinding of a multistage elastic yarn through providing elastic yarn wound body packages on a multistage stand are provided. The elastic yarn wound body package comprises a paper tube and an elastic yarn wound body, wherein: the paper tube has a groove in the circumferential direction, perpendicular to the paper tube axis, between an end portion of the elastic yarn wound body and an end portion of the paper tube; a tail yarn of the elastic yarn wound body is wound into the groove; and a wire-shaped object or tape-shaped object that crosses at least a portion of the yarn bundle of the tail yarn is held thereby.

Abstract: Provided is a fragrance-retaining fiber that, after absorption of a fragrance component, retains the fragrance even though a long period of time has passed. In particular, provided is a fragrance-retaining polyurethane-based fiber having, 48 hours after absorption of a fragrance component, a total fragrance component emission of from 0.1 ?g/g·h to 1000 ?g/g·h.

Abstract: The present invention relates to a polyurethane resin including, as constituent units, a diol (a1) having a number average molecular weight of 500 to 10,000, an organic diisocyanate (b), and a chain extender (a2). The total concentration of urethane groups and urea groups in the polyurethane resin is 1.25 to 2.50 mmol/g based on the weight of the polyurethane resin. Hard segment domains of the polyurethane resin have an average domain size of 20 to 30 nm as measured with an atomic force microscope.

Abstract: To provide elastic fabric that has comfortable wear and fit even in thin and light fabric by using a high-powered polyurethane elastic fiber that has at least 1.5 times the active force and recovery per unit fineness at the time of 100 to 200% elongation compared to conventional polyurethane elastic fiber. Resolution means an elastic fabric comprising a polyurethane elastic fiber made of a polyol, with a molecular weight between 450 and 1600 with a ratio of weight average molecular weight to number average molecular weight of at least 1.8, an organic diisocyanate compound, and a diamine compound.

Abstract: The present invention relates to polyurethane elastic fibers obtained by spinning a polyurethane resin. The polyurethane resin includes, as constituent units, a diol (a1) having a number average molecular weight of 500 to 10,000, an organic diisocyanate (b), and a chain extender (a2). The total concentration of urethane groups and urea groups in the polyurethane resin is 1.25 to 2.50 mmol/g based on the weight of the polyurethane resin. Hard segment domains of the polyurethane resin have an average domain size of 20 to 30 nm as measured with an atomic force microscope.

Abstract: The present invention relates to a polyurethane resin including, as constituent units, a diol (a1) having a number average molecular weight of 500 to 10,000, an organic diisocyanate (b), and a chain extender (a2). The total concentration of urethane groups and urea groups in the polyurethane resin is 1.25 to 2.50 mmol/g based on the weight of the polyurethane resin. Hard segment domains of the polyurethane resin have an average domain size of 20 to 30 nm as measured with an atomic force microscope.

Abstract: In order to provide an elastic polyurethane thread with excellent antibacterial and deodorant properties as well as excellent color fastness, an elastic polyurethane thread is made which consists of polyurethanes which have polymer diols and diisocyanates as the starting materials, contains metallic phosphates in the range of 0.5-10 wt %, and has an emitted quantity of monoamine compounds with molecular weights of 120 or less of 100 ?g/m2 or more.

Abstract: An object of the present invention is to provide a deodorant material having an excellent capability of removing an odor, especially a distinctive body odor of the middle-aged and elderly. The deodorant material comprises a polyurethane resin capable of removing the odor of nonenal, preferably further capable of removing the odor of at least one selected from the group consisting of ammonia, acetic acid, and isovaleric acid.

Abstract: To provide elastic fabric that has comfortable wear and fit even in thin and light fabric by using a high-powered polyurethane elastic fiber that has at least 1.5 times the active force and recovery per unit fineness at the time of 100 to 200% elongation compared to conventional polyurethane elastic fiber. Resolution means an elastic fabric comprising a polyurethane elastic fiber made of a polyol, with a molecular weight between 450 and 1600 with a ratio of weight average molecular weight to number average molecular weight of at least 1.8, an organic diisocyanate compound, and a diamine compound.

Abstract: Disclosed is composition comprising an aqueous dispersion containing a dye, a stain blocker component, and an anti-soil component. The composition provides uniform dyeing, and superior stain blocking and anti-soil characteristics to fibers, carpets, and fabrics by adjusting the conductivity and pH of the dispersion. Alternatively, the composition can comprise an aqueous dispersion containing a dye, a stain blocker component, and a retarder for slowing down the rate of dye reaction. Also disclosed is a method of applying the compositions and dispersions to fibers, carpets, and fabrics.

Abstract: The present invention provides elastic polyurethane yarns which possess excellent elongation, recoverability, heat resistance and chemical resistance, as well as a method of manufacturing the same. The elastic polyurethane yarns comprise a polyurethane being composed mainly of a polymeric diol and a diisocyanate, and contains through incorporation a compound having within the molecule a phosphorus-nitrogen interatomic bond(s). The process can produce the elastic polyurethane yarns by adding to a solution of the polyurethane a compound having within the molecule a phosphorus-nitrogen interatomic bond(s), followed by spinning.