Polyester resins are the product of the reaction of__________________?
Correct answer: A. Dihydric alcohol and dicarboxylic aromatic acids
- A. Dihydric alcohol and dicarboxylic aromatic acids
- B. Polyamines with aliphatic dicarboxylic acids
- C. Styrene in the presence of catalyst
- D. Epichlorohydrin with diphenylol propane
Explanation
Polyester resins form by condensation between a dihydric alcohol and a dicarboxylic acid, commonly an aromatic acid, producing ester linkages. Epichlorohydrin with diphenylol propane forms epoxy resin, which is the likely alternative mistake.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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