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Which one of the following is not a condensation polymer?
A
Neoprene
B
Melamine
C
Glyptal
D
Dacron
Detailed Solution
Neoprene is formed by addition (chain-growth) polymerisation of chloroprene,
$CH_2=C(Cl)-CH=CH_2$. No small molecule is lost.
Melamine (melamine–formaldehyde), glyptal (ethylene glycol + phthalic acid) and dacron (ethylene glycol + terephthalic acid) are condensation polymers, formed with loss of water.
So neoprene is not a condensation polymer.
$CH_2=C(Cl)-CH=CH_2$. No small molecule is lost.
Melamine (melamine–formaldehyde), glyptal (ethylene glycol + phthalic acid) and dacron (ethylene glycol + terephthalic acid) are condensation polymers, formed with loss of water.
So neoprene is not a condensation polymer.