BR^® 6747-1 Water-Based Adhesive Bonding Primer System

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BR 6747-1 corrosion inhibiting primer is a one part, chromate based, modified epoxy primer which contains no volatile organic components (V.O.C.).

BR 6747-1 is 100% water-based and does not rely on exempt solvents to achieve its zero V.O.C. level rating. BR 6747-1 exceeds all state and federal V.O.C. emission regulations for structural adhesive bonding primers and offers mechanical properties and corrosion resistance equal to that of solvent-based primer systems. BR 6747-1 also provides outstanding performance with most 250°F (120°C) and 350°F (177°C) curing adhesive systems.

Wide application / processing latitude, simple processing with H.V.L.P or standard air atomizing spray equipment; and insensitive to spray booth conditions, temperatures from 65°F (18°C) to 95°F (35°C) and R.H. from 30% to 70%.

For applications which do not allow the use of chromate corrosion inhibitors, please see Cytec Technical Bulletin for BR 6757 non-chromate-based corrosion-inhibiting adhesive bonding primer.

Features and Benefits

• No volatile organic components - 100% water-based, zero V.O.C.
• Short drying time, and easy to determine when flash-off is complete
• Drips and runs are less likely to occur; clean up requires only water
• Rated at 600 hours of continuous operation, so spray gun clogging & tank scaling are not an issue
• Excellent corrosion resistance
• Mechanical properties equal to solvent-based primer systems, with primer thickness from 0.00015 to 0.0004 inches
• Can be cured from 250°F (120°C) to 350°F (177°C) and is compatible with a wide variety of 250°F (120°C) and 350°F (177°C) curing adhesives
• Service temperature from -70°F (-57°C) to 350°F (177°C)
• Protects prepared surface from further oxidation; prevents hydrolysis of oxide layers
• M.E.K. wipe resistant after 60 minute cure at 250°F(120°C)
• Long storage life, 12 months at 40°F to 55°F