MK-6820V Polymethacrylate (PMA) Viscosity Index Improvers for Gear Oil
According to SAE J306, the 100℃ kinematic viscosity of gear oil should remain within the viscosity range after a 20-hour KRL shear test, for example, the 100℃ kinematic viscosity of grade 90 oil should be above 13.5 mm²/s after shear. At the same time, outstanding low-temperature fluidity is also needed to meet the low-temperature Brookfield viscosity requirements.
Polymethacrylate Viscosity Index Inhibitor Typical Data
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Item
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Typical Data
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Test Method
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MK-6820V
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Appearance
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Transparent Viscous Liquid
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Visual Check
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Kinematic Viscosity(100℃), mm²/s
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400-600
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GB/T265
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Colour, number
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0.5
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GB/T6540
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Density (20℃), kg/m³
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920
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SH/T0604
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Flash Point (Open Cup), ℃
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160
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GB/T3536
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Thickening Ability
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2.42
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SH/T0622Appendix A
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PSSI
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Diesel InjectorShear, 30 Cycles, %
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1.24
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SH/T0103
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Diesel InjectorShear, 90 Cycles, %
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1.25
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Diesel InjectorShear, 250 Cycles, %
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2.89
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KRL 20h, %
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20
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NB/SH/T0845
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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.
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Thickening, Viscosity Index and Pour Point in Different Base Oils
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100N
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32#
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MK-6820V
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MK-6820V
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wt%
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0
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5
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10
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0
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5
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10
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Kinematic Viscosity (100℃), mm²/s
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4.27
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5.02
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6.09
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5.67
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6.7
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8.08
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Kinematic Viscosity (40℃), mm²/s
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18.59
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22.29
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27.44
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29.5
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35.09
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43.17
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VI
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140
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161
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179
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136
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151
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163
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Pour Point, ℃
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-40
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-55
unfrozen |
-51
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-20
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-42
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-41
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Advantages in Industrial Gear Oil Formulation
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Thermal Efficiency
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Bearing Protection
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MicropittingProtection
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Additive Compatibility
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Total Cost
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Mineral Gear Oil
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Low
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Medium
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Medium
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High
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Low
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PAO/mPAOGear Oil
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High
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High
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Medium
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Low
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High
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Gear Oil with TC-051V
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High
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High
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High
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High
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Medium
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Applications in Gear Oil |
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Products
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PSSI (KRL 20h)
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Product Features
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Suggested Applications
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MK-6810V
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10
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Ultra-high Shear Stability and Excellent Low-temperature Performance
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High-performance oil meeting OEM specifications
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MK-6820V
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20
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High Shear Stability; Outstanding Low-temperature Brookfield Viscosity
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SAE 75W-90, 75W-85, 75W-80, etc.
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MK-6830V
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40
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Excellent Thickening Performance; Good Low-temperature Brookfield Viscosity; Designed for Low-viscosity Oil with Low Dosage Levels
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SAE 75W-80, etc.
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MK-6840V
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50
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Good Low-temperature Brookfield Viscosity; Designed for Low-viscosity Oil with Low Dosage Levels
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SAE 75W-80, etc.
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Polymethacrylate Viscosity Index Inhibitor Suggested Use
Add 5.0%~35.0%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 of MK-6820V functional polymer needed.
Polymethacrylate Viscosity Index Improvers Packaging
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:
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High viscosity index & good low-temperature performance
- Excellent shear stability & outstanding formulation flexibility
Performance Advantages of Finished Gear Oil:
- Excellent blending flexibility & outstanding performance at high and low temperatures lExcellent shear stability & oil temperature reduction due to low tractive effort
- Excellent compatibility with rubber & good solubility with other additives
- Excellent thermal stability and oxidation stability
