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How is dacron obtained from ethylene gly...

How is dacron obtained from ethylene glycol and terephthalic acid?

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Dacron is obtained by condensation polymerisation of ethylene glycol and terephthalic acid at 420-460K using zinc acetate and antimony oxide as catalyst.

But , Decron is commercially produced by using dimet terephthalate, instead of terephthalic acid.
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