A urethane linkage occurs when an alcohol adds across the
A urethane linkage occurs when an alcohol adds across the carbon—nitrogen double bond in an isocyanate:
Polyurethanes are formed from the copolymerization of a diol with a diisocyanate. Polyurethanes are used in foamed insulation and a variery of other construction materials. What is the structure of the polyurethane formed by the following reaction?
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