Table 2.
Comparison between the properties of the product obtained after reaction with oleic acid and methyl ricinoleate using Novozym 435 (6 wt.%) at 80°C and those of commercial lubricants.
| Lubricant | Viscosity at 40°C (cSt) | Viscosity at 100°C (cSt) | Viscosity index |
|---|---|---|---|
| Product of this study (oleic acid + methyl ricinoleate) | 23.9 | 5.2 | 153 |
| Light neutral solvent | 30–40 | 5 | 125 |
| Medium neutral solvent | 40–50 | 7 | 95 |
| Heavy neutral solvent | 70–300 | 10–20 | 95 |
| Mineral oil Spindle 09 | 10.7 | 2.7 | 95 |
| Lubrax Unitractora | 54 | 9.3 | 156 |
aBiodegradable synthetic ester marketed by BR for tractors.