Which among the following is not a polyester?

Question:

Which among the following is not a polyester?

  1. Novolac

  2. PHBV

  3. Dacron

  4. Glyptal

Correct Option: 1

Solution:

Novalac is a linear polymer of $[\mathrm{Ph}-\mathrm{OH}+\mathrm{HCHO}]$.

So ester linkage not present.

So novalac is not a polyester.

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