| 摘要 |
<p>The object of the invention is to provide a polyurethanic resin that can be employed in dental field for performing precise dental models. The polyurethanic colour resin have to react to substance that allow to get away moisture and to strengthen chemical resistance, to improve impact strength, to reduce deformation under load, to increase abrasion resistance and to improve environmental stress crack resistance. The grafted polyurethanic colour resin can be used to performing very precise dental models that also are very resistant to rotating and hands instruments, rich in dental details, and can be personalized by resin colour.</p> |
