Polymethacrylate (PMA) Viscosity Index Improvers for Ultra-low Temperature Oil
Ultra-low temperature oil is widely used for mechanical equipment in extremely cold regions with a working temperature as low as -50℃, whose harsh environment makes enormous demands on the viscosity-temperature performance, especially the low-temperature performance, of the oil. To be specific, ultra-high viscosity index, ultra-low pour point and low-temperature kinematic or dynamic viscosity are required, and the shear stability of the oil under certain working conditions needs to be taken into consideration as well. Our products designed for ultra-low temperature oil show better performance in such respects, and this series of products can also be used when similar performance is asked for, such as in aviation oil and high-performance shock absorber oil. The products in the following tables are developed with differentiated focuses for the performance, such as viscosity index improvement and shear stability, in order to meet all kinds of needs.
MK-6733V Polymethacrylate Viscosity Index Improvers Typical Data
| Item | Typical Data | Test Method | |
| Appearance | Transparent Viscous Liquid | Visual Check | |
| Kinematic Viscosity (100℃), mm²/s | 1000-1300 | GB/T 265 | |
| Colour, number | 0.5 | GB/T 6540 | |
| Density (20℃), kg/m³ | 880 | SH/T 0604 | |
| Flash Point (Open Cup), ℃ | 160 | GB/T 3536 | |
| Thickening Ability | 6.91 | SH/T 0622 Appendix A | |
|
PSSI
|
Diesel Injector Shear, 30 Cycles, % | 8.19 |
SH/T 0103 |
| Diesel Injector Shear, 90 Cycles, % | 14.14 | ||
| Diesel Injector Shear, 250 Cycles, % | 17.45 | ||
| KRL 20 h, % | 63 | NB/SH/T 0845 | |
| Note: According to Appendix A, the product is added to HVI150 base oil, and the increase in kinematic viscosity (100℃) of the blended oil with 10% PMA viscosity index improver is measured. | |||
MK-6733VThickening, Viscosity Index and Pour Point in Different Base Oils
| 100N | 250N | |||||
| MK-6733V | MK-6733V | |||||
| wt% | 0 | 5 | 10 | 0 | 5 | 10 |
| Kinematic Viscosity (100℃), mm²/s | 4.27 | 6.37 | 9.33 | 7.4 | 11.33 | 16.47 |
| Kinematic Viscosity (40℃), mm²/s | 18.59 | 26.51 | 37.95 | 50.23 | 71.19 | 98.32 |
| VI | 140 | 207 | 242 | 108 | 152 | 182 |
| Pour Point, ℃ | -40 | -51 | -46 | -22 | -40 | -39 |
Recommended Formula of MK-6733V in Shock Absorber Oils
| Formula | ||
| 60N Base Oil | 95 | |
| MK-6733V | 3.5 | |
| Functional Additives
MK-8010 |
1.5 | |
| MK-PPD | 0 | |
| Non-Silicon Defoamer | 300ppm/Ton | |
| Item | Test Method | |
| Kinematic Viscosity (40℃), mm²/s | 15.49 | GB/T 265 |
| Kinematic Viscosity (100℃), mm²/s | 4.72 | GB/T 265 |
| VI | 247 | GB/T 1995 |
| Pour Point, ℃ | -50 | GB/T 3535 |
| Flash Point, ℃ | 164 | GB/T 3636 |
| Brookfield Viscosity (-40℃), mPa·s | 3298 | GB/T 11145 |
Applications in Ultra-low Temperature Oil |
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| Products | PSSI (KRL 20h) | Product Features | Suggested Applications |
For use with low-viscosity Group II, III, IV and V and naphthenic base oils |
| MK-6731V | 36 | Excellent Shear Stability and Low-temperature Performance; Good Performance in Improving the Viscosity Index | Oil used in extremely cold regions requiring excellent shear stability, viscosity index improvement and low-temperature performance | |
| MK-6732V | 48 | Good Shear Stability; Excellent Low-temperature Performance and Viscosity Index Improvement | Oil used in extremely cold regions requiring excellent viscosity index improvement and low-temperature performance and aviation hydraulic oil | |
| MK-6733V | 63 | Outstanding Low-temperature Performance and Viscosity Index Improvement | Shear-stable oil used in extremely cold regions requiring excellent viscosity index improvement and low-temperature performance, shock absorber oil or other special oil | |
Suggested Use
Add 1.0%~15.0%wt to the specified base oils. Given the different types of base oils, thickening, viscosity index and pour point tests of the blended oil are required to determine the exact amount ofMK-6733V functional polymer needed.
Polymethacrylate Viscosity Index Improvers Packaging
MK-6733V is a solution of modified polymethacrylate (PMA) in deeply refined mineral oil, which can be packaged in 200 L steel drums with a net weight of 175 kg or IBC tanks with a net weight of 900 kg.
Product Features:
- Outstanding Low-temperature Performance
- Viscosity Index Improvement
