Toray Opelontex Co., Ltd.

Invista North America S.a.r.l.

Sanyo Chemical Industries, Ltd.

Takemoto Oil & Fat Co., Ltd.

Torayopelontexco., Ltd.

Invista Technologies S.a.r.l.

The Lycra Company UK Limited

Toshihiro Tanaka

Masashi Hara

Hong Liu

Tatsuaki Kanbayashi

Hiroshi Takayama

Katsuya Suzuki

Hirokuni Inoue

Yasushi Sasaki

Koji Hirano

Yasushi Fujita

Yasunobu Arakawa

Shingo Ito

Yusuke Koike

Hironori Ishiwata

Masahi Hara

Fumitake Mori

Kazuki Naeshiro

Keiichiro Oshima

Shinpei Funaoka

Kenzo Hori

Shingo Itoh

Kouichi Taniguchi

Fumio Takeuchi

Provided is an elastic fiber treatment agent, containing; a hydrocarbon resin (A); and a hydrocarbon oil (B). The hydrocarbon resin (A) contains a polymer having a structural unit, as a main structural unit, derived from at least one monomer selected from aromatic olefin and aliphatic diolefin, the polymer being partially hydrogenated or fully hydrogenated. It is preferred that the hydrocarbon resin (A) contains a polymer having a structural unit derived from aromatic olefin as a monomer, the polymer being partially hydrogenated or fully hydrogenated, and the aromatic olefin is at least one selected from indene and methylstyrene. Thus, the elastic fiber treatment agent of the present invention imparts excellent unraveling properties to elastic fibers and has excellent adhesiveness to hot melt adhesives, enables the production of stretchable sheets exhibiting good adhesiveness even when processed at a high draft ratio, and is suitable for obtaining soft feel sanitary products.

Treatment agent for elastic fiber

In order to provide a polyurethane yarn having exceptional performance in terms of resistance to chlorine embrittlement essentially without the use of zinc, which is a heavy metal, and having advantageous application particularly in swimwear; as well as a fabric and article of swimwear using the polyurethane yarn, the present invention is a polyurethane yarn characterized in containing a partially hindered phenol compound having at least one partially hindered hydroxyphenyl group and a molecular weight of 300 or more, and a synthetic carbonate comprising one metal selected from the group consisting of alkali metals and alkaline-earth metals. The polyurethane yarn and other fibers are combined to yield a fabric and article of swimwear.

Polyurethane yarn, as well as fabric and swimwear using same

[Problem] To provide a polyurethane elastic yarn which has the high strength and ductility sought in polyurethane elastic yarn, and also has excellent durability and heat resistance, as well as little fatigue at low temperature; and a production method thereof. [Means of Resolution] A polyurethane elastic yarn made from polyurethane which has polymer diol and diisocyanate as starting substances, wherein said polyurethane comprises a polyurethane A containing a polybutadiene structure in which the proportion of 1,2-bonded butadiene structure to 1,4-bonded butadiene structure in the molecule is in the range from 91:9 to 20:80.

Polyurethane elastic yarn and production method thereof

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 &#x3bc;g/g&#xb7;h to 1000 &#x3bc;g/g&#xb7;h.

Polyurethane fiber

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.

Polyurethane resin, polyurethane resin composition, and method for manufacturing polyurethane resin

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.

Elastic fabric comprising a polyurethane elastic fiber made from a polyether based polyol

Problem To provide a polyurethane elastic yarn with excellent elongation, recoverability, and light resistance that is suitable for use in stretchable fabrics and clothing, and to provide a method for manufacture thereof. Resolution Means Include a benzotriazole ultraviolet absorber containing one or more unsaturated bond in the molecule when manufacturing elastic yarn made of polyurethane with a polymeric diol and diisocyanate as starting material.

Polyurethane elastic yarn and method for producing same

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.

Deodorant material

Disclosed is a polyurethane elastic yarn which is excellent in elongation, resilience, heat resistance, alkali resistance, chemical resistance, and capability of being dyed with a cationic dye and which is suitable for use in a stretch cloth, a wearing apparel or the like. The polyurethane elastic yarn comprises: an elastic yarn comprising a polyurethane mainly composed of a polymer diol and a diisocyanate; and a polymer of a compound having a sulfonate group contained in the elastic yarn.

Cationic dyeable polyurethane elastic yarn and method of production

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.

Elastic polyurethane yarn and method of manufacturing the same

Growing community of inventors

Shiga, Japan

Toshihiro Tanaka