| 摘要 |
<p>Tough, heat-formable sheet material and mouldable articles produced therefrom comprising a high-molecular weight synthetic resin as stiffening component wherein the stiffening component is a low-melting, highly-crystalline polyesterurethane formed by reacting polyester chains with isocyanate to obtain sufficient molecular weight to give desired properties. Products are especially suitable for use in shoe counters and can be formulated to combine desired mechanical properties with predetermined set-up times during which mouldability is retained to enable several shoe-making operations to be carried out without the need for further heating.</p> |
