What Is Uncoated Calcium Carbonate?
Potential applications include:
- Water-based paints
- Construction compounds
- Adhesives
- Putty and filler products
- Selected paper applications
- General industrial formulations
What Is Coated Calcium Carbonate?
Coated calcium carbonate is surface-treated, most commonly with stearic acid. This treatment makes the surface more hydrophobic and can improve compatibility with polymer systems.
Coated grades are commonly considered for:
- PP and PE filler masterbatch
- PVC compounds
- Plastic films
- Woven packaging
- Pipes and profiles
- Injection-moulded products
Why Is Surface Coating Important?
In suitable formulations, controlled coating may support:
- Better dispersion
- Improved polymer compatibility
- Lower moisture sensitivity
- More stable processing
- Improved surface appearanceMore uniform mineral distribution
The ideal coating level depends on the polymer, production equipment, addition rate and final-product requirements.
Which Grade Should You Choose?
Uncoated calcium carbonate may be appropriate for water-based and mineral-based systems, while coated calcium carbonate is generally more compatible with hydrophobic polymer applications.
However, selection should be based on technical data and production trials rather than the words “coated” or “uncoated” alone. CarboCore helps customers compare particle size, coating condition and application requirements before confirming the appropriate grade.
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