| 摘要 |
<p>Novel and improved thermoplastic polyurethanes having an excellent balance of physical properties and improved resistance to ultraviolet degradation are prepared by reacting together a macropolyol including hydroxyl terminated polyesters, polyethers, polycarbonates, polylactones, polyhydrocarbons, and polyepihalohydrins, a diol such as the glycols containing 2 to 10 carbon atoms and p-tetramethyl xylene diisocyanate.</p> |
