Examples of addition polymers are

Options

A. Kevlar
B. Nylon 66
C. Natural rubber
D. Teflon

Answer

To determine which of the given options are examples of addition polymers, we need to analyze each option based on the definition of addition polymers. Addition polymers are formed by the polymerization of monomers without the production of any by-products.

### Step-by-Step Solution:

1. **Understanding Addition Polymers**:
- Addition polymers are formed when monomers with double or triple bonds react to form a long chain without the loss of any small molecules (like water or HCl).

2. **Analyzing Each Option**:
- **Option 1: Kevlar**:
- Kevlar is synthesized from benzene-1,4-diamine and benzene-1,4-dicarbonyl dichloride.
- During the polymerization, HCl is released as a by-product.
- **Conclusion**: Kevlar is a condensation polymer, not an addition polymer.

- **Option 2: Nylon 6,6**:
- Nylon 6,6 is formed from adipic acid and hexamethylenediamine.
- The reaction releases water as a by-product.
- **Conclusion**: Nylon 6,6 is also a condensation polymer, not an addition polymer.

- **Option 3: Natural Rubber**:
- Natural rubber is made from the polymerization of isoprene (C5H8).
- The polymerization does not produce any by-products.
- **Conclusion**: Natural rubber is an addition polymer.

- **Option 4: Teflon**:
- Teflon is produced from the polymerization of tetrafluoroethylene (C2F4).
- This reaction also does not yield any by-products.
- **Conclusion**: Teflon is an addition polymer.

3. **Final Answer**:
- The examples of addition polymers from the given options are **Natural Rubber and Teflon**.

### Summary of Results:
- **Addition Polymers**: Natural Rubber, Teflon
- **Condensation Polymers**: Kevlar, Nylon 6,6