# Which of the following is not a condensation polymer?

$\begin {array} {1 1} (a)\;Glyptal & \quad (b)\;Dacron \\ (c)\;Nylon-66 & \quad (d)\;PTFE \end {array}$

PTFE is formed by heating tetra fluoro ethene with persulphate catylysts under high high pressure
Ans : (d)