Polyurethane yarn, as well as fabric and swimwear using same
AssigneeTorayOpelontexCo., Ltd.
InventorsKatsuya Suzuki, Toshihiro Tanaka
Life of this patent
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Abstract
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.
Claims7
A solution spun polyurethane yarn capable of achieving chlorine resistance without containing zinc, said solution spun yarn consisting of
- (i) 0.15-4 wt% of a partially hindered phenol compound having at least one partially hindered hydroxyphenyl and a molecular weight of 300 or greater,
- (ii) 0.5-10 wt% of a synthetic carbonate selected from the group consisting of potassium bicarbonate, potassium carbonate, calcium bicarbonate, calcium carbonate, sodium bicarbonate, sodium carbonate, lithium carbonate and magnesium carbonate, or a complex salt or hydrate thereof, wherein said synthetic carbonate does not contain heavy metal impurities, and
- (iii) polyurethane,
- wherein the polyurethane yarn has an average molecular weight of 30,000 to 150,000 and wherein a fabric comprising the yarn exhibits a chlorine resistance of at least two-fold longer as compared to a fabric comprising a yarn without (i) or (ii).
Dependencies are inferred from the claim text.