| 摘要 |
<p>The present invention relates to a polyurethane coating having a hardness of 50 to 90 Shore A, obtainable by mixing (a) polyisocyanate having an average functionality of 2 to less than 2.5, (b) polymeric compounds having isocyanate-reactive groups, (c) catalysts, comprising trimerization catalyst, optionally (d) chain extenders, and (e) auxiliaries and/or additives to give a reaction mixture, applying the reaction mixture to an article, and curing the reaction mixture to give the polyurethane coating, the polyisocyanate component (a) and the components (b) to (e) being reacted in amounts such that the isocyanate index is 103 to 200. Further provided with the present invention are a process for producing an abrasion-resistant polyurethane coating, and a steering wheel comprising an abrasion-resistant polyurethane coating.</p> |
