Precipitated Barium Sulphate in Powder Coatings

*Ultra-fine, high-purity Blanc Fixe for gloss, stability, and surface optimization*

What is Precipitated Barium Sulphate?

Precipitated Barium Sulphate (BaSO₄), also known as Blanc Fixe, is a chemically inert, white, micronized filler produced from highly purified barium salts. Compared to natural barytes, precipitated grades offer:
- Much higher purity and brightness
- Ultra-narrow particle size distribution
- Enhanced chemical and thermal stability
- Very low oil absorption and surface area

These features make it a key functional filler in powder coatings, delivering surface improvement, gloss control, and pigment extension.

Why Use Blanc Fixe in Powder Coating?

Powder coatings require perfect particle compatibility, mechanical resistance, and consistent optical properties. PBS enhances key parameters in multiple ways:

Benefit	Effect in Powder Coatings
High Purity (98.8% BaSO₄)	No impurities, no interference with curing
Narrow Particle Size (d50 ≈ 1 µm)	Uniform film thickness, smooth surface
Low Oil Absorption (13–16 g/100g)	Maintains resin flow, does not overload binder
High Brightness (L* = 99)	Enhances color strength, improves whiteness
Chemical Inertness	No reactivity with pigments or curing agents
High Density (4.4 g/cm³)	Increases mechanical durability & scratch resistance

Where to Use It?

Chemion PBS-12 is especially suited for:
- Gloss control and film leveling
- Whiteness enhancement without yellowing
- Matting agent carrier
- Pigment volume extender in high-gloss & matte systems
- Cost-effective filler without compromising quality

It integrates seamlessly into:
✅ Architectural powder coatings
✅ General industrial powder paints
✅ Automotive components
✅ High-solid systems requiring filler balance

Product Spotlight: CHEMION PBS-12

BaSO₄ Purity: 98.8% (DIN.EN.ISO 3262/2)

Whiteness (L*): 99 (ISO 7724)

pH: 7.4

Particle Size (d50): 0.9–1.2 µm

Oil Absorption: 13–16 g/100g

Specific Gravity: 4.4 g/cm³

Volatile Matter: 0.1–0.2%

Residue >45 µm: <0.01%

Appearance: Bright white, ultra-fine powder
Packing: 25 kg PE-lined paper bags on pallets
Shelf life: 12 months in dry storage conditions

How to Incorporate into Powder Coatings?

- Typical dosage: 5–20% depending on system
- Can be used in combination with TiO₂ to reduce cost while maintaining brightness
- Pre-dispersed in base resin or added during premixing
- Suitable for all epoxy, polyester, polyurethane and hybrid powder coating systems

Support from Chemion AG

- Side-by-side comparisons with other fillers
- Gloss, whiteness, and dispersion testing
- Formulation guidance for flow, gloss and matting control
- Consistent technical documentation (TDS, SDS, COA) and REACH compliance

Contact Us

Email: info@chemionag.com
Web: www.chemionag.com

CHEMION AG – Performance Matters. Purity Delivers.