Dacron

Dacron or terylene is a polymer of ethylene glycol and terephthalic acid. Terylene is prepared by heating a mixture of ethylene glycol and terephthalic acid at about 420-460K in the presence of zinc-acetate-antimony trioxide catalyst. It is also called Dacron.

n HO—CH₂—CH₂—OH + n HOOC—C₆H₄—COOH ——>

  Ethylene glycol                        Terephthalic acid

— [OCH₂CH₂—O—CO—C₆H₄—CO] _n— + n H₂O

Terylene or Dacron

Uses:

It is used-

• For making cloth by mixing with cotton.
• For making magnetic recording tapes.