Dow Barrier Primer Datasheet Dow Barrier Primer

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  • Description for Dow Barrier Primer

    • Adhesion promoter for use on sensitive porous substrates • Two-component epoxy resin system • Suitable for use on substrates such as natural stone, masonry and glass-reinforced concrete.

    *See Terms of Use Below

    Application Type Primer
    1 Part or 2 Part 2-Part
    Material Form Liquid
    Substrate Metal, Carbon steel, Glass-reinforced concrete
    Manufacturer Dow
    Chemistry Epoxy resin
    Cure Method 2-Part
    Color Pale yellow
  • Technical Data for Dow Barrier Primer

    • Application Type
    • 1 Part or 2 Part
      • 2-Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
    • Chemistry
    • Cure Method
      • 2-Part Cure - 2-Part
    • Color
      • Yellow - Pale yellow
    Cure Specs
    Work / Pot Time (min) 480 Test Method
    Mix Ratio 1:1 (by volume)
    Other Properties
    Flash Point (°F) 95.0
    Business Information
    Shelf Life Details From date of manufacture
    Shelf Life (mon) 12
    Not Good For
    Don't Use For Dow Corning® 790 Silicone Building Sealant, Dow Corning® 888 Silicone Joint Sealant, Dow Corning® 890-SL Silicone Joint Sealant, Dow Corning® NS Parking Structure Sealant, Dow Corning® SL Parking Structure Sealant
  • Best Practices for Dow Barrier Primer

    *See Terms of Use Below

    1. Surface Preparation

      Surfaces to be primed should be clean, dry and free from contaminants. Use an abrasive cleaning method and then blow with compressed air to remove dust.(Air compressors used for this purpose must be equipped with traps capable of providing moisture- and oil-free air.)

    2. Application

      Mix together equal parts of Parts A and B (by volume). After mixing, the primer should be used within 8 hours. Apply a thin, uniform layer by brush to the surfaces to be primed, avoiding contact with areas that will not be sealed. Allow the primer to air dry for a minimum of one hour before sealant application (primer should be dry to the touch). Sealant should be applied within 6 hours of primer application.

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Work / Pot Time Test Methods
Work / Pot Time Temperature
480 min 25°C