GBASEA Barium Sulfate Extinction 20HB for Coatings with Excellent Hiding Power
Product Overview
GBASEA Barium Sulfate Extinction 20HB is a premium-grade, micronized barium sulfate extender engineered to deliver exceptional opacity, chemical resistance, and rheological control in industrial and decorative coatings. With a controlled particle size distribution (D50: 0.7–1.2 µm) and ultra-low oil absorption (14–18 g/100g), this high-purity (≥98.5%) extender enhances hiding power by up to 30% compared to conventional calcium carbonate or talc, enabling formulators to reduce TiO2 loading while maintaining film integrity and gloss uniformity.
Specifically designed for waterborne, solvent-borne, and powder coating systems, Extinction 20HB acts as a multifunctional additive:
- TiO2 Extender: Improves pigment spacing efficiency, maximizing TiO2 utilization.
- Corrosion Inhibitor: Chemically inert barrier against acids, alkalis, and salt spray (ASTM B117).
- Matting Agent: Delivers consistent semi-gloss to matte finishes (60° gloss: 5–25 GU).
- Density Modifier: Balances sag resistance and sprayability in high-build coatings.
Certified under REACH, RoHS, and ISO 9001, this barium sulfate is a sustainable alternative to critical raw materials, aligning with VOC reduction goals and circular economy principles.
Key Features & Competitive Advantages
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Unmatched Hiding Power & Opacity
- TiO2 Optimization: Reduces titanium dioxide usage by 15–25% while maintaining equivalent contrast ratio (ISO 6504-1: ≥95%).
- Pigment Spacing: Monodisperse particles prevent TiO2 agglomeration, enhancing light scattering efficiency.
- Refractive Index (1.64): Bridges the gap between binders (1.5) and TiO2 (2.7) for optimal light diffusion.
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Superior Processing & Film Properties
- Low Oil Absorption (14–18 g/100g): Minimizes resin demand, lowering formulation costs.
- Thixotropy Control: Pseudoplastic rheology for anti-settling stability and brush/roll application ease.
- Film Reinforcement: 20% improvement in pencil hardness (H–2H) and scrub resistance (ASTM D2486).
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Extreme Environmental Resistance
- pH Stability (2–12): Withstands acidic rain, alkaline cleaners, and marine environments.
- UV Inertness: Zero chalking or yellowing after 1,000+ hours QUV-B exposure (ASTM G154).
- Thermal Stability: No decomposition below 1,580°C, ideal for powder coatings and automotive exhaust systems.
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Sustainability & Compliance
- Heavy Metal-Free: Complies with EU Toy Safety Directive EN71-3 and FDA 21 CFR for food-contact coatings.
- Low Carbon Footprint: Production powered by 70% renewable energy with closed-loop water recycling.
- Dust-Free Granules: Safe handling with ≤0.1% respirable particles (OSHA PEL standards).
Technical Differentiation: Extinction 20HB vs. Conventional Extenders
| Property | Extinction 20HB | Calcium Carbonate | Talc |
|---|---|---|---|
| Oil Absorption (g/100g) | 14–18 | 25–35 | 30–45 |
| Refractive Index | 1.64 | 1.58 | 1.55 |
| pH Resistance | 2–12 | 5–9 | 5–9 |
| Abrasion Resistance | High | Moderate | Low |
| TiO2 Replacement Potential | 25% | 10% | 8% |
Applications
Extinction 20HB is engineered for high-performance coatings across industries:
1. Architectural & Decorative Coatings
- Interior/Exterior Emulsions: Enhacrylics and silicone-modified resins.
- Wood & Furniture Finishes: UV-curable matte varnishes with anti-fingerprint properties.
- Textured Wall Coatings: Improves crack bridging and impact resistance.
2. Industrial & Protective Coatings
- Heavy-Duty Epoxies: Chemical storage tank linings and offshore platform coatings.
- Zinc-Rich Primers: Extends sacrificial anode life in marine environments.
- Powder Coatings: Flow control agent for appliance and automotive underbody coatings.
3. Automotive & Transportation
- Electrocoat Primers (E-Coat): Reduces cratering and improves throw power.
- Clearcoat Systems: Controlled matting without haze or viscosity spikes.
- Adhesive Sealants: Reinforces shear strength in automotive body panel bonding.
4. Specialty Markets
- Lithium-Ion Batteries: Coating additive for electrode binders to enhance thermal stability.
- 3D Printing: Rheology modifier for photopolymer resins in SLA/DLP systems.
- Cosmetic Packaging: FDA-compliant matte finishes for luxury lipstick casings.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO4 Purity | ≥98.5% | XRF Analysis |
| Moisture Content | ≤0.3% | ISO 787-2 |
| Physical Properties | ||
| Particle Size (D50) | 0.7–1.2 µm | Laser Diffraction (ISO 13320) |
| Specific Gravity | 4.3–4.5 g/cm³ | ISO 787-10 |
| Brightness (ISO) | 92–94% | ISO 2470 |
| Performance Data | ||
| pH (10% Slurry) | 6.5–8.5 | ISO 787-9 |
| Conductivity | ≤200 µS/cm | DIN 53779 |
| LOI (1000°C) | ≤1.0% | TGA (ISO 11358) |
Production Process
Extinction 20HB is manufactured through a 10-stage, zero-waste process:
- Ore Selection: Natural baryte ore with ≤0.01% heavy metals.
- Crushing & Grinding: Jaw crushers and Raymond mills to 200-mesh fineness.
- Purification: Acid leaching (HCl) to remove silica and iron impurities.
- Micronization: Wet grinding with zirconia beads to submicron sizes.
- Surface Modification: Stearic acid coating for hydrophobic compatibility.
- Filtration: Membrane filtration to 99.9% purity.
- Drying: Spray drying at 180°C with dehumidified air.
- Classification: Air-jet sieving to eliminate +5 µm particles.
- Quality Control: ICP-OES for heavy metals, BET for surface area.
- Packaging: 25 kg multi-layer anti-moisture bags with palletization.
Why Choose GBASEA Extinction 20HB?
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Technical Excellence
- Patented micronization technology for narrow particle size distribution.
- Customizable surface treatments (silane, titanate, or non-ionic).
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Global Compliance
- Full REACH registration, UK REACH, and Korea K-REACH compliance.
- Halogen-free, APEO-free, and TSCA-listed for global market access.
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Sustainability Commitment
- 100% recyclable packaging and 90% process water reuse.
- Carbon footprint: 1.2 kg CO2/kg (50% below industry average).
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Application Support
- Free formulation audits to optimize TiO2/barium sulfate ratios.
- On-site technical training for dispersion and viscosity control.
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| Business Type | business_type_options | Company Size | 2000 |
| Established | December 18, 2014 | ||
| Address | |||
| Main Products | PVC Resin, PP, PE, PET, Titanium Dioxide, Pigment, Car Tire | ||
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