Glyptals are chiefly employed in

Options

A. Toy making
B. Surface coating
C. Photofilm making
D. Electric insulators

Answer

### Step-by-Step Solution:

1. **Understanding Glyptals**: Glyptals are a type of polymer formed from the reaction of ethylene glycol and phthalic acid. They are known for their resin-like properties.

2. **Identifying the Composition**: Glyptals are synthesized from ethylene glycol and phthalic acid. This combination results in a polymer that has specific characteristics suitable for various applications.

3. **Recognizing the Properties**: Glyptals are categorized as alkyd resins. Alkyd resins are known for their durability, resistance to moisture, and ability to form a hard finish.

4. **Applications of Glyptals**: The primary uses of glyptals include:
- **Surface Coatings**: They are widely used in paints and varnishes due to their excellent adhesion and protective qualities.
- **Binding Materials**: Glyptals serve as binding agents in various materials, including cement.
- **Manufacturing Pens**: They are also utilized in the production of certain types of pens, where their properties enhance the writing experience.

5. **Conclusion**: Therefore, glyptals are chiefly employed in surface coatings, binding materials, and the manufacture of pens.

### Final Answer:
Glyptals are chiefly employed in surface coatings.