Table 3 Phase equilibrium results in different inhibitor and pour point depressant systems.
From: Synthesis of long-chain polyester polymers and their properties as crude oil pour point depressant
DW | DW + 2% PVP | DW + 2%PVP+ 0.1% P-PPD | DW + 5% EG | DW + 2%PVP+ 5% EG | DW + 2%PVP + 5% EG + 0.1% P-PPD | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
T/K | P/MPa | T/K | P/MPa | T/K | P/MPa | T/K | P/MPa | T/K | P/MPa | T/K | P/MPa |
276.3 | 3.6 | 276.46 | 3.71 | 276.63 | 3.82 | 276.8 | 4.5 | 276.57 | 4.53 | 276.49 | 4.35 |
278.27 | 4.43 | 278.03 | 4.31 | 278.37 | 4.57 | 278.35 | 5.44 | 277.98 | 5.27 | 278.16 | 5.42 |
280.34 | 5.54 | 280.05 | 5.4 | 280.55 | 5.75 | 280.45 | 6.9 | 279.93 | 6.57 | 279.7 | 6.45 |
282.48 | 6.83 | 282.01 | 6.59 | 282.27 | 6.89 | 281.61 | 7.89 | 281.26 | 7.57 | 281.45 | 7.76 |
284.3 | 8.26 | 284.05 | 8.17 | 283.8 | 8.16 | 283.15 | 9.37 | 282.6 | 9.01 | 282.49 | 8.8 |
