| 摘要 |
<p>Polyurethane casting mass obtainable by reacting at least one polyether polyol (100 parts) and at least one di- or polyisocyanate (10-80 parts), in presence of 0.5-10% solution of iron(III) acetylacetonate (0.05-5 parts) dissolved in at least one diamine compound (I) or in at least one monofunctional polyether polyol, and optionally in presence of water and/or at least one chain extender, is claimed. Polyurethane casting mass obtainable by reacting at least one polyether polyol (100 parts) and at least one di- or polyisocyanate (10-80 parts), in presence of 0.5-10% solution of iron(III) acetylacetonate (0.05-5 parts) dissolved in at least one diamine compound of formula (NHR-R 1>-NHR 2>) (I) or in at least one monofunctional polyether polyol, and optionally in presence of water and/or at least one chain extender, is claimed. R, R 2> : CH 3, ethyl or propyl; and R 1> : 1-18C alkylene, 6C arylene, 12C arylene or 7-13C alkyl-arylene. An independent claim is also included for preparing polyurethane casting mass, comprising providing polyether polyol, adding iron(III) acetylacetonate dissolved in at least one diamine or in at least one monofunctional polyol and stirring, adding water and/or at least one chain extender, and adding the di- or polyisocyanate.</p> |
