| 摘要 |
<p>A blowing agent which is a mixture of ethanol and dibutylphthalate, the molar ratio of ethanol to dibutylphthalate being in the range of from about 1.5 to about 4. This blowing agent is useful in the preparation of a polymeric foam derived from an organic polyisocyanate compound and a compound having more than one active hydrogen, for example a polyhydroxy compound.</p> |
