Invista North America S.a.r.l.

Toray Opelontex Co., Ltd.

Invista Technologies S.a.r.l.

Tatsuaki Kanbayashi

Toshihiro Tanaka

Masashi Hara

Hirokuni Inoue

Masahi Hara

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

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Shiga, Japan

Tatsuaki Kanbayashi