The preparation of which step-growth polymer does not involve elimination of a small molecule during the course of its formation?

Question

Quizplus · Accepted Answer

Polyurethanes are formed through the reaction of a diisocyanate with a polyol, which does not involve the elimination of a small molecule. This process is a step-growth polymerization but differs from others like polyamides and polyesters, where water or other small molecules are eliminated during the polymerization process.

The Preparation of Which Step-Growth Polymer Does Not Involve Elimination