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| Customization: | Available |
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| Feature: | Biodegradable |
| CAS No.: | 9002-86-2 |
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Polyvinyl chlorides is high molecular compounds polymerized with structural element as CH2-CHCLn,degree of polymerization usually as 590-1500.In the process of re-polymerization ,affected by kinds of factors such as the polymerization process, reaction conditions, reactant composition, additives etc.it can produce eight different types of PVC resin performance is different.
| Items | SG3 | SG5 | SG7 | SG8 |
| K value | 72-71 | 68-66 | 62-60 | 59-55 |
| Viscosity Number (ml/g) |
135-127 | 118-107 | 95-87 | 86-73 |
| Average degree of polymerization | 1370-1251 | 1135-981 | 845-741 | 740-650 |
| Number of impurity substance | ≤16 | ≤16 | ≤20 | ≤20 |
| Mass fraction of volatiles (including water) |
≤0.30 |
≤0.40 |
≤0.40 | ≤0.40 |
| Appearance density | ≥0.45 | ≥0.48 | ≥0.50 | ≥0.50 |
| Number of "fish eye" |
≤20 | ≤20 | ≤30 | ≤30 |
| Whiteness(160ºC,10min)% | ≥78 | ≥75 | ≥75 | ≥75 |
| VCM residue | ≤5 | ≤5 | ≤5 | ≤5 |
| Packing | 25kgs two layers draft paper bag or 1000kgs PP bag | |||
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