Polymethacrylates are synthetic polymers derived from methacrylate esters, commonly used as viscosity index (VI) improvers, pour point depressants, and defoamers in lubricating oils.
Key functions of PMA
Viscosity index improver: PMAs help oils resist thinning at high temperatures and thickening at low temperatures, improving performance across a wide temperature range.
Pour point depressant (PPD): modified PMA structures disrupt wax crystal formation in oils, lowering the pour point and improving cold flow properties.
Shear stability enhancer: PMAs can be used for high shear stability, making them suitable for applications like automatic transmission fluids and hydraulic oils.
Defoaming agent: PMAs are used to reduce foam formation in oil systems, especially where high agitation is involved.
Key Advantages of PMA viscosity modifiers:
- Highly customizable (molecular weight, polarity, solubility)
- Excellent clarity in finished oils
- Strong low-temperature performance
- Good oxidative and thermal stability
- Compatible with Group I–IV base oils
DYM Resources sources and supplies PMA viscosity modifiers globally.
For more information regarding the product availability, feel free to contact us at info@dymresources.com.