Polyethylene Vinyl Chloride

What is vinyl chloride.

Polyethylene vinyl chloride.

Vinyl chloride is used primarily to make polyvinyl chloride pvc. Pvc is the world s third most widely produced synthetic plastic polymer after polyethylene and polypropylene about 40 million tons of pvc are produced each year. It does not occur naturally and must be produced industrially for its commercial uses. Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate the weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene.

Vinyl chloride is an organochloride with the formula h 2 c chcl that is also called vinyl chloride monomer vcm or chloroethene this colorless compound is an important industrial chemical chiefly used to produce the polymer polyvinyl chloride pvc. Pvc is made by subjecting vinyl chloride to highly reactive compounds known as free radical initiators. Since vinyl chloride is a monosubstituted ethylene and not a symmetric molecule in principle it could have explicit tacticity as does for example polypropylene. Vinyl chloride is a colorless gas that burns easily.

Pvc comes in two basic forms. In practice however vinyl chloride polymerized commercially does not have regular tacticity because the growing end of the chain is a free radical at an sp 2 hybridized carbon. Rigid sometimes abbreviated as rpvc and flexible. Vinyl chloride ch 2 chcl also known as chloroethylene is most often obtained by reacting ethylene with oxygen and hydrogen chloride over a copper catalyst it is a toxic and carcinogenic gas that is handled under special protective procedures.