Polyvinyl chloride(PVC) is the third-most widely manufactured and useed plastic raw material, it comes in two basic forms: rigid and flexible. The rigid type PVC is used in making of pipes and profiles applications such as doors and windows. PVC is used in construction because it is more economic than traditional metal materials in pipe and profile applications. It can be made softer and more flexible by the addition of plasticizers, the most widely used being phthalates. In this form, it is also used in clothing and upholstery, electrical cable insulation, plumbing, floooring, wall covering, artificial leather, signage, phonograph records, inflatable products and many applications where ruubber is used.
Production of PVC resin generally relies heavily on the use of chlorine and crude oil. There are four manufacturing prodcesses widely used in its production. They are the suspension,tlhe mass,the emulsion/dispersion and the solution method. Pure poly(vinyl chloride) is a white, fine power.
