PVC Resin & Additives - PVC Resin

There are 4 types of PVC Resin grouped by polymerization method

1. Suspension Grade PVC
2. Emulsion Grade PVC
3. Bulk Polymerised PVC
4. Copolymer PVC

We supply majorly Suspension Grade.

Suspension Grade PVC

The most widely prevalent type, Suspension grade PVC is made by polymerizing droplets of Vinyl Chloride monomer suspended in water. When Polymerisation is complete, the slurry is centrifuged and the PVC cake is gently dried by special heating systems so as not to subject the unstabilised resin to heat degradation. Particle size of the resin ranges from 50-250 microns and have porous popcorn like structures which readily absorbs Plasticisers. The structure of the PVC particles can be modified by selecting suitable suspending agents and Polymerisation Catalyst. Less porous types are extensively used for the high volume Rigid or Unplasticised PVC applications like PVC Pipes, Windows, Sidings, Ductings. Suspension grades of a coarser particle size and very porous structures absorb large quantities of Plasticiser forming a dryblend at temperatures as low as 80oC.The more porous types are used in Plasticised applications like Cables, Footwear, Soft Calendered Sheeting and Films etc.

K-value / Specifications	57-59	60-62	65-67	72-74	79-81
Degree of Polymerization	700±50	800±50	1000±50	1350±50	1800±100
Bulk Density(g/cc) (ISO 60)	0.57±0.04	0.57±0.04	0.54±0.04	0.51±0.04	0.49±0.04
Particle Size (45 mesh pass %) (Honeywell SRA-150)	99	99	99	99	99
Volatiles(%) (ISO 1269)	0.3	0.3	0.3	0.3	0.3
Residual VCM(ppm) (ISO 6401)	<1	<1	<1	<1	<1

Applications of PVC Resin

K-Value	Application
57-59	Injection Moulding (Fitting), Blowing Moulding (Bottle)
60-62	Injection Moulding (Pipe Fitting), Hollow-vacuum Forming (Bottle Blowing), Rigid Film, Shrinkable Film.
65-67	Soft and Semi-rigid Product For General Purpose (PVC Film, Sheet, Beach Chair, Venetian Blind), Rigid Pipe, Hose, Wire and Cable Insulation.
72-74	High Impact Flexible Products (PVC Leather, Film,  Furniture, Shoes), High Impact Sheet, High Voltage Wire and Cable Insulation.
79-81	High Impact Flexible Products (PVC Leather, Film,  Furniture, Shoes), High Impact Sheet, High Voltage Wire and Cable Insulation.