Surface-Treated Coated Calcium Carbonate

Premium coated calcium carbonate with enhanced dispersion, compatibility and performance characteristics for demanding polymer and coating applications.

Overview

Our coated calcium carbonate is surface-treated with stearic acid or other organic coatings to improve compatibility with polymer matrices, enhance dispersion, reduce moisture absorption and optimize processing characteristics. This makes it ideal for high-performance applications where standard calcium carbonate may not meet requirements.

Applications

Engineering Plastics — improved impact strength and surface finish
PVC Compounds — enhanced processing and mechanical properties
Polypropylene & Polyethylene — better dispersion and compatibility
Masterbatches — superior color dispersion and processing
High-Performance Coatings — improved rheology and film properties
Rubber Compounds — enhanced reinforcement and processing

Typical Specifications

Base Material	Ground Calcium Carbonate (CaCO₃)
Coating Type	Stearic Acid / Organic Surface Treatment
Coating Level	0.5–2.0% (customizable)
Whiteness	≥95%
Moisture	≤0.3%
Particle size (D50)	1–15 µm (custom options available)
Oil Absorption	15–25 g/100g
pH (10% slurry)	8–9

Key Benefits

Superior Dispersion: Coated surface prevents agglomeration and ensures uniform distribution in polymer matrices
Enhanced Compatibility: Organic coating improves interaction with polymer chains for better mechanical properties
Reduced Moisture Sensitivity: Coating acts as a barrier, minimizing moisture absorption during storage and processing
Improved Processing: Better flow characteristics and reduced equipment wear during compounding
Cost-Effective Performance: Achieves premium results at competitive pricing compared to uncoated alternatives