Question

what are the monomers of dacron?

Answer 1

The monomer, bis(2-hydroxyethyl) terephthalate, is prepared either by reaction of ethylene glycol and terephthalic acid, or by the reaction of dimethyl terephthalate and ethylene glycol as a transesterification.

Answer 2

Explanation:

Dacron is coploymer prepared by condensation of methyl ester of terphthalic  acid with ethylene glycol. During condensation methanol molecule is formed which results formation number of ester linkage.

The monomer of Dacron are: Terphthalic  acid with ethylene glycol:

$2HOCH_2-CH_2OH+H_3CO-CO-Ph-CO-OCH_3\rightarrow$

$HOCH_2-CH_2O-CO-Ph-CO-OCH_2CH_2OH+2CH_3OH$