Montan Wax is a natural mineral wax extracted from lignite (brown coal). It has a high melting point and contains natural esters, alcohols, and fatty acids. It is widely used as a lubricant, release agent, and dispersant in plastic processing, rubber compounding, and surface treatments due to its excellent thermal resistance and anti-sticking properties.
| Property | Typical Value |
|---|---|
| Appearance | Brown to light yellow flakes or powder |
| Melting Point | 80 – 100 °C |
| Acid Value | 15 – 25 mg KOH/g |
| Saponification Value | 80 – 120 mg KOH/g |
| Volatility (105°C) | ≤ 1.0% |
| Density | 0.98 – 1.02 g/cm³ |
| Issue | Montan Wax Advantage |
|---|---|
| Sticking to mold or roll | Provides strong release performance |
| Poor filler dispersion | Improves pigment/filler wetting and flow |
| Scratches on product surface | Increases surface hardness and smoothness |
| Low processing throughput | Reduces machine friction and heat buildup |
Q1: Is Montan Wax compatible with thermoplastics?
Yes, it is especially effective in polyamides, polyesters, and PVC.
Q2: Does it discolor the product?
It may slightly darken the product; light-colored grades are available upon request.
Q3: How is it added in extrusion?
Typically at 0.3 – 1.5 phr depending on the system and application.
