Suspension Polyvinyl Chloride:
The Directorate General of Foreign Trade (DGFT) imposed a six-month restriction on imports of a Suspension Polyvinyl Chloride (S-PVC) resin which is a key input used for manufacturing of pipes.
- Suspension Polyvinyl Chloride is a polymer manufactured from vinyl chloride monomer.
- It is produced through polymerisation of Vinyl Chloride Monomer (VCM) in aqueous medium with the use of initiators and additives ensuring controlled molecular weight and particle morphology.
- Poly(vinyl chloride) resins are produced by four basic processes: suspension, emulsion, bulk and solution polymerization.
- PVC suspensions resins are usually relatively dust-free and granular with varying degrees of particle porosity.
- PVC emulsion resins are small particle powders containing very little free monomer.
- Bulk PVC resins are similar to suspension PVC resins, though the particles tend to be more porous.
- Solution PVC resins are smaller in particle size than suspension PVC with high porosity particles containing essentially no free monomer.
- Applications: S-PVC resin is used across sectors, from irrigation pipes and conduits to electrical wires used in construction.
