Question:
Identify the monomers use to prepare glyptal.
Identify the monomers use to prepare glyptal.
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Phthalic acid (ortho) $\rightarrow$ Glyptal (used in paints). Terephthalic acid (para) $\rightarrow$ Terylene (used in clothes).
Updated On: May 14, 2026
- $\beta$-Hydroxy butyric acid and $\beta$-hydroxy valeric acid
- Ethylene glycol and phenol
- Ethylene glycol and terephthalic acid
- Ethylene glycol and phthalic acid
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Glyptal is a polyester resin used in paints and lacquers, formed by a condensation polymerization reaction.
Step 2: Meaning
Monomers are the building blocks that repeat to form a polymer chain.
Step 3: Analysis
- Ethylene glycol and Phthalic acid (1,2-benzene dicarboxylic acid) react to form Glyptal. - Note: If terephthalic acid (1,4-benzene dicarboxylic acid) is used with ethylene glycol, the result is Terylene (Dacron).
Step 4: Conclusion
The specific combination for Glyptal is Ethylene glycol and phthalic acid. Final Answer: (D)
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