| 摘要 |
An improved, modified polyisocyanurate foam composition having improved compressive strength and good flame and smoke properties is prepared by the reaction of a methylene diisocyanate with a modifying amount of a hydroxyl compound, such as a hydroxyl-containing polyether or a saturated polyester, and with an alicyclic glycol, such as cyclohexane dimethanol, in the presence of a trimerization catalyst, a blowing amount of a blowing agent and a surfactant.
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