What type of rubber compound is Neoprene based on?

• A. Butylene
• B. Acetylene
• C. Ethylene
• D. Propylene

Answer: (B)

Neoprene is a synthetic rubber compound that is primarily based on polychloroprene, which is derived from the polymerization of chloroprene. Chloroprene itself is a derivative of acetylene, making acetylene the correct foundational compound upon which neoprene is built. This connection to acetylene is significant because it influences neoprene's properties, such as its resistance to oil, ozone, and various weathering conditions. The unique structure provided by its acetylene basis contributes to the versatility of neoprene in various applications, including seals, gaskets, and insulation. This chemical relation is critical to understanding neoprene's performance characteristics compared to other synthetic rubbers that may be based on different compounds.