Polyurethane rigid foams
作者： Maurizio Guandalini , Paolo Golini
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摘要: The present invention relates to polyurethane rigid foams formulations. More particularly, the formulations, prepared from aromatic polyester polyols, which show improved compressive strength. formulations include an isocyanate reacting mixture, at least one polymeric diphenylmethane diisocyanate, having a functionality of 2.7, and blowing agent; such that stoichiometric index polyisocyanate mixture is 1.0-1.8.
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