What term refers to the polymer class produced by the reaction of a diisocyanate with hydroxyl groups?

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Multiple Choice

What term refers to the polymer class produced by the reaction of a diisocyanate with hydroxyl groups?

Explanation:
When a diisocyanate reacts with hydroxyl groups, urethane linkages form, creating polyurethane polymers. The term urethane (often used to refer to the polymer class itself) captures this specific type of bonding resulting from the reaction between isocyanate groups and alcohols. Polyester, epoxy, and silicone involve different bonding chemistries—esters from acids and diols, epoxy rings from epoxides, and siloxane networks from silicon-oxygen bonds—so they don’t arise from diisocyanate–hydroxyl reactions.

When a diisocyanate reacts with hydroxyl groups, urethane linkages form, creating polyurethane polymers. The term urethane (often used to refer to the polymer class itself) captures this specific type of bonding resulting from the reaction between isocyanate groups and alcohols. Polyester, epoxy, and silicone involve different bonding chemistries—esters from acids and diols, epoxy rings from epoxides, and siloxane networks from silicon-oxygen bonds—so they don’t arise from diisocyanate–hydroxyl reactions.

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