Invista North America S.a.r.l.

Toray Opelontex Co., Ltd.

Invista Technologies S.a.r.l.

The Lycra Company UK Limited

Masashi Hara

Toshihiro Tanaka

Hong Liu

Hiroshi Takayama

Hirokuni Inoue

Tatsuaki Kanbayashi

[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

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

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

Masashi Hara