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Question:

How is dacron obtained from ethylene glycol and terephthalic acid?

Answer:

Dacron (terylene) is obtained by the polymerization of ethylene glycol and terephthalic acid at 420 to 460 K in the presence of zinc acetate-antimony trioxide catalyst.

The reaction is as follows:

It is used in blending with cotton or wool fibres, as glass reinforcing materials in safety helmets, for making magnetic recording tapes.


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