| Mass of copolymers’ Molecule | Ratio of copolymers’ DМАК:Dn-1 | Viscosity Decrease of oil solution, % on the period (Hours) | |||
| 1 | 4 | 8 | 12 | ||
| 8000 | 90:10 | 4.8 | 5.8 | 6.9 | 7.7 |
| 8000 | 80:10 | 4.6 | 5.1 | 5.5 | 5.9 |
| 8000 | 70:30 | 3.4 | 4.6 | 4.6 | 4.6 |
| 8000 | 60:40 | 2.3 | 3.4 | 4.5 | 4.5 |
| 10,000 | 80:20 | 5.5 | 9.0 | 9.2 | 9.5 |
| 13,000 | 80:20 | 9.5 | 10.5 | 11.5 | 11.5 |
| Polydecylmethacrylate | |||||
| 13,000 | - | 12.5 | 14.0 | 15.8 | 17.9 |