Question: will like (: Polyurethanes can be made by the step growth polymerization based on the reaction between isocyanates (RN=C=O) and alcohols. Predict the repeat unit

will like (:
will like (: Polyurethanes can be made by the step growth polymerization

Polyurethanes can be made by the step growth polymerization based on the reaction between isocyanates (RN=C=O) and alcohols. Predict the repeat unit and draw the reaction mechanism for the polymerization of 4,4-methylenebis(phenylisocyanate) and ethylene glycol. +HOOH 4,4'-methylenebis(phenylisocyanate) ethylene glycol

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