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PROCESSING OF PVC

Polyvinyl chloride, also known as polyvinyl chloride or as its abbreviation PVC, is the polymer of vinyl chloride, with the formula - (CH2CHCl) n- and a molecular weight between 60,000 and 150,000 u. It is the most important polymer in the series obtained from vinyl monomers and is one of the plastic materials of highest consumption  in the world.

It is a pure, rigid material; it owes its versatility of use to the possibility of also being mixed in high proportions with inorganic compounds and plasticisers, such as phthalic acid esters, which make it flexible and mouldable. It is considered stable and safe in technological applications at room temperature, but extremely dangerous if burnt or heated to high temperatures and in unsuitable processing installations, due to the presence of chlorine in the molecule, which can be released as hydrochloric acid or as a dioxin or vinyl chloride monomer.

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