Which of the following is not a polyester pol | vedclass

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(D) $1$. $Terylene$ (also known as $Dacron$) is a polyester formed by the condensation of ethylene glycol and terephthalic acid.
$2$. $Glyptal$ is a

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Novolac

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(D) $1$. $Terylene$ (also known as $Dacron$) is a polyester formed by the condensation of ethylene glycol and terephthalic acid.
$2$. $Glyptal$ is a polyester resin formed by the reaction of ethylene glycol and phthalic acid.
$3$. $PHBV$ (poly-$\beta$-hydroxybutyrate-co-$\beta$-hydroxyvalerate) is a biodegradable polyester.
$4$. $Novolac$ is a phenol-formaldehyde resin,which is a cross-linked polymer,not a polyester.

Which of the following is not a polyester polymer?

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