Which of the following are addition polymers?

APolyacrylonitrile (Orlon)
BGlyptal
CNeoprene
DBuna-N

Answer: A, C, D

Orlon, neoprene and Buna-N form from unsaturated monomers by chain-growth addition. Glyptal is a polyester formed from ethylene glycol and phthalic acid with loss of water.

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