Polymer additives / 06
Viscosity index improver
An ethylene-propylene copolymer for controlling lubricant viscosity-temperature behaviour.
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01 / Description
Function and properties
An ethylene-propylene copolymer used as a viscosity index improver in lubricating oils. Selection considers base oil composition, target viscosity, thickening efficiency and shear stability. Suitable oils, incorporation methods and treat rates depend on the grade and formulation testing. Evaluate low-temperature performance and viscosity retention after shear in the finished oil.
- Viscosity-temperature control
- Polymer additives
- Selection for the base oil
02 / Characteristics
Selection information
- Polymer type
- Ethylene-propylene copolymer
- Product form
- White rubber blocks
- Main function
- Viscosity index improvement
- Selection criteria
- Base oil and target viscosity
| Parameter | Specification (premium grade) | Test result | Test method |
|---|---|---|---|
| Appearance | White rubber blocks, free of foreign matter | White rubber blocks, free of foreign matter | Visual inspection |
| Volatile matter, mass % | ≤ 0.50 | 0.20 | GB/T 24131.1-2018, oven method B |
| Ash, mass % | ≤ 0.04 | 0.03 | GB/T 4498.1-2013, method A |
| Ethylene content, mass % | 48.6–52.6 | 50.8 | SH/T 1751-2005, method A |
| Vanadium content, μg/g | ≤ 2 | 1 | SH/T 1814-2020, section 3 |
| Mooney viscosity ML(1+4), 100 °C | 8–11 | 10 | Annex A or direct method in GB/T 15340-2008; GB/T 1232.1 |
Results are reproduced from the supplied data and are not fixed values guaranteed for every batch. Supply is governed by the agreed specification and batch quality documents. Test method references follow the source information.
Confirm numerical specifications, test methods and supply terms for your selected grade. Include your requirements in the enquiry.
03 / Applications
Applications
Engine oil formulations
Industrial oil formulations
Multigrade lubricant development
Evaluate compatibility, treat rate and performance in the intended formulation or process.
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