Gilsonite as an Industrial Additive: Overview

Beyond its major markets, gilsonite is a versatile additive in many industrial products.

Why formulators use it

• Natural hydrocarbon resin
• Hardness and high softening point
• Excellent adhesion
• Water and chemical resistance
• Deep black colour
• Cost-effective

Additive markets

• Rubber compounding
• Adhesives
• Briquetting binders
• Insulation and electrical compounds
• Plastics colouring
• Lubricants and greases

Why a natural resin is useful

Gilsonite combines several properties that are hard to find in one material: it is hard at room temperature but melts and dissolves when heated, it is very water-resistant, it bonds well to minerals and metals, and it adds deep black colour. For many black or dark products, it can replace part of a synthetic resin at lower cost.

Choosing a grade for compounding

How to start

1. Identify the property you want to improve (hardness, water resistance, cost, colour).
2. Try 3–4 dosage levels in the lab.
3. Check processing (mixing temperature, viscosity) and final properties.
4. Scale up with a pilot batch.

Points to watch

Gilsonite is dark, so it is limited to black or dark products. It also needs enough heat or solvent to dissolve fully; undissolved particles can act as defects.

See gilsonite powder and gilsonite in rubber compounding.