Question

Which of the following organic compounds polymerises to form the polyester dacron?

• A. Propylene and para $-HO -(C_6H_4)- OH $
• B. Benzoic acid and ethanol
• C. Terephthalic acid and ethylene glycol
• D. Benzoic acid and para $-HO- (C_6H_4)- OH$

Answer 1

Answer: (C)

Dacron, commonly known as terylene, is obtained by heating a mixture of terephthalic acid and ethylene glycol at $420-460\, K$ in the presence of zinc acetate and antimony trioxide as a catalyst.