| 摘要 |
<p>A polyurethane polymer which is excellent in oil resistance, weatherability, light resistance, heat resistance, hot-water resistance, hydrolytic resistance, strength, chlorine resistance, and chemical resistance and can be easily and economically produced. It is obtained by polymerizing at least the following two ingredients: (A) a vinyl polymer having a mercapto group at each end of the molecular chain obtained by the reversible addition-elimination chain transfer polymerization method; and (B) an organic polyisocyanate. Also provided are: a polyurethane-based material containing the polyurethane polymer; and elastic polyurethane fibers.</p> |
