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ExBar® W 325

1 of 8 products in this brand
ExBar® W 325 is manufactured using only the highest quality white, natural barium sulfate ore. Strict quality control results in consistent products that are used in coatings, paint, plastics, rubber, sealants, friction materials and many other applications where color, purity and particle size are principle concerns.

Functions: Filler

Chemical Family: Barites & Barium Salts, Silicates

    Knowde Enhanced TDS

    Identification & Functionality

    Chemical Family

    Barites & Barium Salts,

    Silicates

    Chemical Name

    Barium sulfate,

    Calcium Aluminum Borosilicate

    CASE Ingredients Functions

    Filler

    CAS No.
    7727-43-7
    EC No.
    231-784-4
    Technologies

    CASE Ingredients

    Product Families

    CASE Ingredients — Additives

    Fillers & Extenders

    Features & Benefits

    Properties

    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
    Rheology

    • 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

    Applications & Uses

    Markets

    Adhesives & Sealants,

    Paints & Coatings

    Applications

    Adhesives & Sealants — Other Adhesives & Sealants Applications

    Paints & Coatings — Other Paints & Coatings Applications