| 摘要 |
<p>Disclosed is an active hydrogen-containing composition suitable for the production of flexible polyurethane foam when reacted with a polyisocyanate, said composition comprising, (a) a polyol having an average functionality of 2.0 to 4.0, and an equivalent weight in the range of from 500 to 5000; (b) from 0.5 to 5 parts, per 100 parts by weight of component (a), of a crosslinker selected from monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, methylene bis(o-chloroaniline) and mixtures thereof; and (c) from 0.3 to 15 parts per 100 parts by weight of component (a), of a compound having at least 3 hydroxyl groups, at least two of which are secondary hydroxyl groups; and an equivalent weight of less than about 500; as well as flexible polyurethane foams prepared therefrom. The active hydrogen-containing composition of the invention has been discovered to be useful in the production of polyurethane foams which are advantageously able to pass certain standard laboratory flammability tests.</p> |
