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| Specifications | P-440 | P-450 | |||
| First Grade | Qualified | First Grade | Qualified | ||
| B-type visco(DINP60;50rpm),cps≦ | 5000 | 7000 | |||
| K Value | （73-75） | （63～65） | |||
| Degree of Polymerization | 1450±200 | 1000±150 | |||
| Foreign Matter≦ | 20 | 40 | 20 | 40 | |
| Volatile Matter/%≦ | 0.4 | 0.5 | 0.4 | 0.5 | |
| Retained on% | 63µm | 1 | 2 | 1 | 2 |
| VCM Residual/(μg/g)≦ | 10 | 10 | 5 | 5 | |
