| 摘要 |
<p>The invention relates to a method for producing a molded polyisocyanurate foam by charging a mold with an organic polyisocyanate, a polyol, a surfactant, a foaming agent and a catalyst in an equivalent ratio of NCO to OH of 1.5 to 4.0, wherein the foaming agent comprises dichlorotetrafluoroethane used in an amount of 2 to 30 parts by weight per 100 parts by weight of a solution of starting materials for the foam.</p> |
