Polyalphaolefin PAO4
Poly-alpha olefin PAO4 is a product made from alpha-decene polymerization and hydrogenation. It has good low-temperature properties, low volatility and high thermal stability. The high viscosity index of low-viscosity polyalphaolefins gives them very good fluidity at low temperatures and high oil film thickness at high temperatures. Low-viscosity polyalphaolefins are the primary base oils for passenger car engines, heavy-duty diesel engines, transmissions, gearboxes, and a variety of industrial synthetic lubricants.
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Material Chemistry
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Product introduction
Performance features
High viscosity index
Low pour point
Low volatility
Thermal oxidation stability
Hydrolytic stability
Good compatibility with mineral oils and ester oils
Good sensitivity to additives
Recommended Applications
Recommended for use in a variety of industrial and vehicle lubricants, including gear oils, hydraulic oils, internal combustion engine oils, compressor oils, greases and other functional fluids.
Typical data
| Project | Unit | Typical value | Analytical method |
| Kinematic viscosity | cSt | ASTM D445 | |
| 100℃ | 3.9 | ||
| 40℃ | 16.9 | ||
| -40℃ | 2420 | ||
| Viscosity index | 123 | ASTM D2270 | |
| NOACK evaporation loss | wt% | 11 | ASTM D5800 |
| Density 20℃ | g/cm3 | 0.82 | ASTM D1298 |
| Pour point | ℃ | -73 | ASTM D97 |
| Flash point（COC） | ℃ | 219 | ASTM D92 |
| Randian（COC） | ℃ | 249 | ASTM D92 |
| Appearance | clear and transparent | ASTM D4176 | |
| odor | odorless | ASTM D1296 | |
| Pt-Co colorimetry | 0 | ASTM D1209 |
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