| 摘要 |
<p>This invention relates to water-blown polyurethane foam prepared in the presence of a foam stabilizing additive. The additive comprises from 10 to 50 weight percent of a hydrocarbon oil, and from 90 to 50 weight percent of a polyester polyol which is a solid at room temperature. Use of the additive in a polyurethane foaming process provides for improved dimensional stability of the resulting foam. The additive is especially of value when preparing water blown polyether polyol-based polyurethane foam useful, for example, in sealant applications.</p> |
