Overview
Pour point depressants (PPDs) lower the temperature at which a lubricating oil ceases to flow by interfering with the growth and interlocking of wax crystals. Polymethacrylate PPDs are particularly effective across Group I, II, and III base oils, offering broad base oil response compared to other PPD chemistries such as alkylated naphthalene or styrene esters. PMA PPDs are used in engine oils, gear oils, and hydraulic fluids formulated for cold climate service. Treat rates are typically 0.1–1.0 wt%. Shear stability of the PPD itself is also a consideration for applications requiring long-term pour point retention.
| Chemistry | KV @100°C (mm²/s) | Base Oil Compatibility |
|---|---|---|
| PMA Pour Point Depressant (Universal) | 300–600 | Group I, II, III |
| PMA Pour Point Depressant (High Efficiency) | 200–600 | Group I, II, III |
| PMA Pour Point Depressant (High Shear Stability) | 165 | Group I, II, III |
| PMA Pour Point Depressant (Engine / Gear / Hydraulic) | 100–250 | Group I, II, III |
| PMA Pour Point Depressant (Highly Efficient) | 380 | Group I, II, III |
| PMA Pour Point Depressant (Low Viscosity) | 75–150 | Group I, II, III |
| PMA Pour Point Depressant (High Viscosity) | 700–1000 | Group I, II, III |
| PMA Pour Point Depressant (Highly Efficient) | 260 | Group I, II, III |