Kelong Brand Ultrafine Calcium Carbonate Powder CC998 - High Dispersion for Coating Applications
Kelong Ultrafine Calcium Carbonate CC998: High-Performance Mineral for Next-Generation Coatings
Engineered Dispersion, Enhanced Durability, and Sustainable Formulation Economics
In an era where coating formulators demand both performance and process efficiency, Kelong CC998 Ultrafine Calcium Carbonate redefines functional mineral additives. Precision-engineered through advanced classification technology and surface modification, this high-purity calcium carbonate delivers unmatched dispersion stability, optical properties, and mechanical reinforcement across waterborne, solvent-borne, and powder coating systems.
Core Product Advantages
1. Premium Optical Performance
- Whiteness Index: 98.5+ (ISO 2470-2)
- Blue-White Undertone: Neutral base minimizes color distortion
- Brightness Retention: ≤0.5% loss after 2,000 hrs QUV exposure
2. Precision Particle Engineering
- Median Particle Size (D50): 1.8–2.2 μm
- Narrow Distribution: 90% particles within 0.5–3.5 μm range
- Specific Surface Area: 4.5–5.5 m²/g (BET analysis)
3. Enhanced Coating Functionality
- 35% higher TiO₂ extension efficiency vs. standard GCC
- Reduces milling energy consumption by 25%
- Improves anti-settling stability to 180+ days
4. Sustainable Formulation
- 100% natural mineral content
- APEO-free | REACH & RoHS compliant
- Carbon footprint: 0.38 kg CO₂e/kg (cradle-to-gate)
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| CaCO₃ Content | ≥98.8% | ISO 3262-1 |
| Whiteness (ISO) | 98.5–99.2 | ISO 2470-2 |
| Particle Size (D50) | 1.8–2.2 μm | Laser Diffraction |
| Residue on 45μm Sieve | ≤0.01% | ISO 787-7 |
| Moisture Content | ≤0.15% | ISO 787-2 |
| Oil Absorption | 12–14 g/100g | ASTM D281 |
| pH (10% Slurry) | 8.5–9.2 | ISO 787-9 |
| Specific Gravity | 2.6–2.8 g/cm³ | ASTM D5965 |
| Radioactivity | <0.5 Bq/g (IAEA Safety Std) | Gamma Spectrometry |
Industry-Specific Performance Benefits
1. Coating Industry Applications
Functional Advantages:
- Film Reinforcement: Increases crosshatch adhesion to 5B (ASTM D3359)
- Wear Resistance: 40% improvement in Taber abrasion test (ASTM D4060)
- Weathering Stability: 92% gloss retention after 1,500 hrs salt spray (ASTM B117)
- Rheological Control: Reduces sagging at 150+ μm DFT
Recommended Formulations:
| Coating Type | Loading (% wt) | Key Benefit |
|---|---|---|
| Waterborne Wood Coat | 15–25% | Enhanced grain filling |
| Epoxy Floor Coating | 30–40% | Improved compressive strength |
| Automotive Primer | 20–30% | Stone chip resistance |
| UV-Curable Coating | 10–18% | Reduced cure shrinkage |
2. Paper Industry Applications
Performance Enhancements:
- Increases paper smoothness to 200+ Bekk seconds (ISO 5627)
- Boosts ISO brightness by 3–5 points in wood-containing grades
- Reduces coating color viscosity by 25% at 35% solids
- Improves print gloss to 75+% (IGT Testing)
Economic Impact:
- 18% reduction in TiO₂ usage for equivalent opacity
- 12% lower drying energy consumption
3. Plastics Industry Applications
Functional Improvements:
- Increases HDPE impact strength by 30% (ASTM D256)
- Enhances LDPE tear resistance to 150+ kN/m (ASTM D1922)
- Reduces PVC processing temperature by 15°C
- Improves PP dimensional stability (0.05% shrinkage)
Cost Savings:
- 25–40% resin replacement in polyolefin compounds
- 18% faster extrusion output rates
4. Rubber Industry Applications
Mechanical Enhancements:
- Tensile strength: 28+ MPa (ASTM D412)
- Tear resistance: 45+ kN/m (ASTM D624)
- Heat aging resistance: ≤10% property loss @ 70°C/7d
- Compression set: ≤25% (ASTM D395 Method B)
Compound Optimization:
- 50–100 phr loading in NBR/PVC blends
- 30% reduction in ZnO usage
5. Daily Chemical Applications
- Toothpaste: Enhanced RDA value control (80–120)
- Cosmetics: Improves SPF boost in sunscreens
- Detergents: Maintains powder flowability at 90% RH
Advanced Surface Treatment
Kelong CC998 features a proprietary dual-layer modification process:
Inorganic Activation:
- Phosphate-based treatment improves resin wettability
Organic Compatibility:
- Stearic acid (1.2–1.5%) coating ensures hydrophobic surface
Benefits:
- Dispersibility Index: ≥95% (Hegman 7+ in 15 mins)
- Moisture Resistance: ≤0.3% absorption @ 85% RH
Environmental & Safety Profile
- Certifications:
- ISO 14001 Environmental Management
- ECOCERT Cosmetics Standard
- FDA 21 CFR 178.3297 Compliance
- Safety Data:
- LD50 >5,000 mg/kg (OECD 423)
- Non-irritating to skin (ISO 10993)
Performance Comparison
Benchmark against conventional calcium carbonate grades:
| Parameter | CC998 | Standard GCC | Precipitated CC |
|---|---|---|---|
| Dispersion Energy | 0.8 kWh/t | 1.5 kWh/t | 2.2 kWh/t |
| TiO₂ Replacement | 35% | 20% | 45% |
| Coating Viscosity | 850 cP | 1,200 cP | 650 cP |
| Cost Efficiency | 1.2x | 1.0x | 1.8x |
Case Study: Automotive Primer Optimization
Challenge: Reduce VOCs while maintaining stone chip resistance in waterborne primer.
Solution:
- Replaced 28% TiO₂ with 35% CC998
- Adjusted PVC from 32% to 38%
Results:
- VOC content reduced from 180 g/L to 95 g/L
- Gravelometer rating improved to 8B (SAE J400)
- Raw material cost savings: $0.22/kg
Packaging & Logistics
- Standard: 25 kg anti-static bags (20/pallet)
- Bulk: 1,250 kg FIBC with moisture barrier
- Shelf Life: 36 months in climate-controlled storage
- Global Compliance: IMDG Certified, Non-Hazardous
Why Choose Kelong CC998?
- Technical Superiority: 15+ patents in ultrafine mineral processing
- Quality Consistency: ±0.1 μm particle size tolerance
- Application Expertise: 30+ years in functional mineral development
- Sustainable Sourcing: Quarried from eco-managed limestone deposits
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