Neoprene rubber is obtained by the polymerization

Options

A. polyhalo - olefin
B. polybutadiene
C. polythylacrylate
D. polyamide

Answer

To determine how neoprene rubber is obtained through polymerization, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Monomer**:
- Neoprene rubber is synthesized from a specific monomer. The monomer for neoprene is chloroprene.

2. **Chemical Structure of Chloroprene**:
- The chemical structure of chloroprene is represented as CH2=CCl-CH=CH2. This indicates that chloroprene has a double bond (alkene) and a chlorine atom attached to it.

3. **Polymerization Process**:
- The process of polymerization involves the linking of multiple chloroprene monomers to form a long chain polymer. This process can be initiated by heat, light, or chemical catalysts.

4. **Formation of Neoprene**:
- During polymerization, the double bonds in chloroprene open up and link together, resulting in the formation of neoprene, which is a type of synthetic rubber.

5. **Classification of Neoprene**:
- Neoprene is classified as a polyhalo olefin because it is derived from a monomer (chloroprene) that contains both a halogen (chlorine) and a double bond (alkene).

6. **Conclusion**:
- Therefore, neoprene rubber is obtained by the polymerization of chloroprene, which falls under the category of polyhalo olefins.

### Final Answer:
Neoprene rubber is obtained by the polymerization of chloroprene (polyhalo olefin).