High Performance Epoxy Mastic – Semi-Gloss (HP4600)

Description

Ultimate High-Solids Protection for Severe & Industrial Corrosion

Benjamin Moore® High Performance Epoxy Mastic Semi-Gloss (HP4600) is a master-grade commercial maintenance coating built to survive extreme industrial conditions. By utilizing a high-solids polyamide epoxy binder, this thick barrier film acts as an impenetrable shield against aggressive atmospheric corrosion, structural stress, chemical degradation, and underwater exposure.

Best Used For:

• Structural steel, exterior tank shells, bridges, and offshore platforms
• Heavy industrial concrete floors and secondary chemical containment dikes
• Pulp and paper mills, wastewater treatment plants, and coastal facilities
• Direct submersion / continuous immersion tanks (fresh or salt water)
• Hand-tool cleaned or power-tool cleaned rusted metal where sandblasting is prohibited

Key Benefits & Features:

• Tenacious Surface Tolerance: Formulated specifically to wet out and lock down tight, hand-prepared rust, eliminating the need for complex, costly blasting on minor repairs.
• High-Build Protective Barrier: Highly viscous formula allows professionals to achieve thick, defensive dry film layers in a single pass to seal out oxygen and water.
• Broad-Spectrum Chemical Defiance: Outperforms standard paints when exposed to constant fuel spray, petroleum oils, aggressive solvents, alkalis, and acids.
• Certified Submersion-Safe: Forms a tightly cross-linked, non-porous semi-gloss film that is fully rated for continuous underwater immersion.

Technical Specifications & Mixing Instructions:

• Coating Type: Two-Component High-Solids Polyamide Epoxy
• Volume Solids (Mixed System): 79% ± 2% (Extreme high density)
• Mixing Protocol: Must be mechanically mixed with its corresponding catalyst component before application.
• Induction & Workability Window: Requires a 15-minute induction period; Pot life is restricted to 2 hours at 77°F (25°C) once combined.
• Cleanup Solvent: Specialized industrial epoxy thinners or Xylene (Do not use water or mineral spirits).
• Dry to Touch: 4 hours | Time Before Recoating: 12 hours.
• Full Structural Return to Service: Light industrial use after 72 hours; full chemical cure in 7 days.

Available Base Options:

• Tinting System: Formulated across 7B, 8B, and 9B industrial tint bases to achieve a full catalog of heavy-duty facility colors.