| 摘要 |
<p>The present invention relates to a preparing method of polyols and polyurthane, polyurethaneforms using the same by depolymerizing the polyester, polyamide and polyurethane with the polymeric fatty acid monopoly hydroxyl alcoholide, and additionally react with the polybasic acid, polyol and amine to prepare acid value of 0.5~lDKOH/g, hydroxyl value of 10~500DKOH/g, and amine value of l~50DKOH/g in polyol, and polyurethane and polyurethaneforms using the same. This is to transform the double bond of the unsaturated fatty acid from the component of the oils and fats in conjugate double bond to induce the Diesl-Alder reaction, and with the improvement of the reactivity to form stability combination in chemical structure to prevent the separate leaching appearance of fatty and fatty oil from the final product, and having the fine compatibility with the polyether-polyol as well as transparent and storage stability. Furthermore, it has 100% of solid with very low viscosity at the room temperature for easy handling while having a great reactivity with the isocyanate that this preparing polyol having excellent chemical and mechanical properties. And, in particular, by recycling the waste edible oil and waste synthetic resin that can be employed as industrially useful material for environment-friendly and economical advantage.</p> |
