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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 | 950-741 | 740-650 |
Number of Impurity Particle | ≤16 | ≤16 | ≤20 | ≤20 |
Volatile Substance | ≤0.3 | ≤0.4 | ≤0.4 | ≤0.4 |
Volatile Conten | ≥0.45 | ≥0.48 | ≥0.50 | ≥0.50 |
Whiteness(160℃,10min)% | ≥78 | ≥75 | ≥75 | ≥75 |










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