Properties of Barium Sulfate

Highest density of any extender

  • Contributes to particle packing density, allowing more solids to be added to the formulation
  • Exceptional noise absorption & deadening
  • Excellent filler in anti-chip coatings
  • Contributes to improved adhesion

Extremely low solubility

  • Chemically inert
    • Not affected by acids or alkalis
    • Insoluble in water
  • Excellent filler in corrosion resistant and flame retardant coatings
  • Low reactivity with binders (extremely low magnesium & calcium oxide content)

Excellent dispersibility

  • Wets easily in all systems

Good scrub resistance

  • The wearing away or removal of a paint film

Improved mar resistance

  • The resistance of a material to abrasive action

Neutral pH: 6.0 - 8.5

  • Control of cross-linking
  • Agglomeration
  • Poor adhesion
  • Reaction times and set times

Refractive index: 1.64 - 1.65

  • One of the highest refractive indexes for a filler/supplemental pigment
  • Good tint retention
  • Improved hide
  • Higher surface gloss
  • Improved light scattering and reflectance

Titanium Dioxide (TiO2) Extender

  • (ExBar® W 1) can replace as much as 6% to 14% in some formulations

Thermal stability

  • Thermal degradation does not occur until 2,876°F (1,580°C) centigrade
  • Excellent in heat resistant coatings
  • Reduced compound stickiness
  • Reduction in die swell due to increased melt temperatures in extrusion

Excellent exterior durability and weather resistance (does not chalk or yellow)
Extremely low oil absorption: 6 - 12

  • Low resin demand and reduction in needed binder, resulting in lower materials costs
  • Higher degree of impermeability, resulting in lower resin demand

Low MoH’s hardness scale: 2.5 - 3.5

  • Grinds easily
  • Low abrasion
  • Minimal wear on equipment
  • Excellent sandability

Radiation blocking

  • Blocks gamma radiation
  • Does not block microwave

Improved impact ratio

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