A contact adhesive is applied to both surfaces, allowed to become touch-dry and then pressed together. Which polymer is commonly used in such adhesives?
Correct answer A. Polychloroprene (neoprene)
Explanation
Contact adhesives are usually solutions of polychloroprene rubber in an organic solvent. Once the solvent evaporates from both coated surfaces, the rubber films bond instantly on contact under pressure.
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