| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane elastic fiber that shows superior mechanical characteristics, specifically, shows superior stress characteristics in a region at 100-200% elongation, which is a region of practical use, even though using an organic diisocyanate compound having superior yellowing resistance.SOLUTION: The polyurethane elastic fiber contains polyurethane polymerized from polyol, an organic diisocyanate compound, and a diol compound. The organic diisocyanate compound contains at least 1,4-Bis(isocyanatomethyl)cyclohexane. An isomer ratio of trans/cis in the 1,4-Bis(isocyanatomethyl)cyclohexane is 70/30 to 95/5. |
