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What are copolymers? Give the chemical e...

What are copolymers? Give the chemical equation for the preparation Dacron. Is it an addition or condensation polymer?

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The polymers obtained by the condensation of two or more different monomers, are called copolymers. For example, bakelite, nylon - 66 etc. Terylene is obtained by heating terephthalic acid and glycol as follows:

It is fonned by the condensation polymerisation. Hence, it is a condensation polymer.
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