List-I | List II | ||
---|---|---|---|
A. | Phenol-formaldehyde resin | I | Glyptal |
B. | The copolymer of 1,3-butadiene and styrene | II | Novolac |
C. | Polyester of glycol and phthalic acid | III | Buna-S |
D. | Polyester of glycol and terephthalic acid | IV | Dacron |
Neoprene is formed from chloroprene. It is prepared by free radical polymerisation. The monomer of neoprene is chloroprene. It is used for preparing gaskets, conveyor belts etc.