초록 ▼

A synthetic fiber which is excellent in moisture-absorbing/releasing property and exhibits high elongation and high stretch recovery, characterized in that it has moisture absorption ratios of 0.5 to 4.0% by weight in environments of 20.degree. C..times.65% RH and that of 4.5% by weight or more in e

A synthetic fiber which is excellent in moisture-absorbing/releasing property and exhibits high elongation and high stretch recovery, characterized in that it has moisture absorption ratios of 0.5 to 4.0% by weight in environments of 20.degree. C..times.65% RH and that of 4.5% by weight or more in environments of 30.degree. C..times.90% RH, respectively, and also has a difference between the absorption ratios in both the environments of 4.0% by weight or more. The representative examples of such fibers include polyurethane synthetic fiber and polyether synthetic fiber. The synthetic fiber maintains a high strength at break of an elastic fiber component thereof also in the state of having absorbed moisture, is excellent in color fastness to rubbing, and can be used for manufacturing a stretch fiber fabric product excellent in comfort through blending with another fiber material. The synthetic fiber can be produced by incorporating a water absorption resin having a water absorption ratio in a range from 500 to 4000% by weight into an elastic fiber such as a polyurethane fiber or a polyurethane-urea fiber in a finely dispersed state in an amount in a range from 1 to 15% by weight relative to a fiber-forming polymer.

대표청구항 ▼

1. A moisture-absorbable synthetic fiber with an improved moisture releasing property exhibiting a high elongation and high stretch-recovery, characterized in that it has a moisture absorption ratio in a range from 0.5 to 4.0% by weight in an environment of 20.degree. C..times.65% RH and that of 4.5

1. A moisture-absorbable synthetic fiber with an improved moisture releasing property exhibiting a high elongation and high stretch-recovery, characterized in that it has a moisture absorption ratio in a range from 0.5 to 4.0% by weight in an environment of 20.degree. C..times.65% RH and that of 4.5% by weight or more in an environment of 30.degree. C..times.90% RH, respectively, and has a difference between the absorption ratios in both the environments of 4.0% by weight or more.