Product Overview
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Benjamin Moore HP1750 Waterborne Bonding Primer is a professional-grade, single-component bonding primer engineered for outstanding adhesion to difficult ferrous and non-ferrous metal surfaces. Formerly sold as Corotech V175, this translucent green primer combines the application advantages of a water-based coating with the adhesion and corrosion protection expected from a high-performance industrial primer.
HP1750 is an excellent choice for aluminum, galvanized metal, steel, stainless steel, copper, and other hard-to-coat surfaces. It can be finished with high-performance epoxies and urethanes or with more maintenance-friendly acrylic, direct-to-metal, and alkyd enamel coatings.
A Water-Based Alternative to Traditional Etching Primers
Traditional metal etching primers are commonly solvent-based, two-component products that achieve adhesion by chemically etching the metal surface. Although effective, these systems require mixing and often involve stronger odors, solvents, more difficult cleanup, and limited working times.
HP1750 was developed as a convenient, single-component alternative for many applications traditionally requiring an etching or wash primer. It requires no catalyst or induction period and provides excellent adhesion without the complexity of a two-component system.
Its water-based formula offers:
- Soap-and-water cleanup
- Lower odor than traditional solvent-based primers
- No catalyst or hardener to measure
- No limited pot life after mixing
- Easier application and maintenance
- Reduced solvent exposure
Exceptional Adhesion to Difficult Metals
HP1750 provides remarkable adhesion to properly prepared ferrous and non-ferrous metals. It is particularly valuable on smooth or difficult substrates where conventional primers may struggle to establish a dependable bond.
Recommended metal surfaces include:
- Aluminum
- Galvanized metal
- Steel and iron
- Stainless steel
- Copper
- Other properly prepared ferrous and non-ferrous metals
Proper cleaning and surface preparation remain critical, particularly on stainless steel, copper, new galvanized metal, and other smooth or contaminated surfaces. A test application is recommended before beginning large or critical projects.
Impressive Corrosion Protection
Although HP1750 is water-based, it provides surprisingly strong corrosion resistance when used as part of a properly specified coating system. It creates a tightly bonded foundation that helps protect the metal and support the long-term performance of the selected finish coat.
This combination of adhesion, corrosion protection, easy application, and broad topcoat compatibility makes HP1750 a true powerhouse metal primer.
Broad Topcoat Compatibility
HP1750 can be topcoated with a wide range of industrial and maintenance coatings.
For demanding environments, it can be finished with:
- High-performance epoxy coatings
- Aliphatic urethane coatings
- Industrial protective coating systems
For applications where easier future maintenance is preferred, it can also be topcoated with:
- Acrylic enamel
- Waterborne direct-to-metal coatings
- Solvent-based DTM coatings
- Alkyd enamel
- Architectural and industrial finishes
Translucent Green Appearance
HP1750 has a translucent green color and is not intended to provide a fully opaque or hiding film. Its purpose is to create a thin, tightly bonded foundation between the metal substrate and the finish coating all while offering excellent corrosion protection.
The translucent appearance is normal and should not be mistaken for inadequate coverage. Apply the product at the recommended spread rate and film thickness rather than attempting to achieve complete visual hiding.
Key Features
- Formerly Corotech V175
- Exceptional adhesion to difficult metal surfaces
- Suitable for ferrous and non-ferrous metals
- Excellent choice for aluminum and galvanized metal
- Can be used on properly prepared stainless steel and copper
- Single-component formula requires no catalyst
- Water-based for easier application and cleanup
- Lower odor than traditional solvent-based etching primers
- Excellent corrosion resistance for a waterborne primer
- Alternative to traditional two-component etching and wash primers
- Compatible with high-performance epoxies and urethanes
- Can also be topcoated with acrylic, DTM, and alkyd enamels
- Translucent green appearance
- Suitable for use in USDA-inspected facilities
- Meets numerous regional air-quality and VOC requirements
Ideal Applications
- Aluminum doors, panels, railings, and equipment
- Galvanized roofing, siding, ductwork, and structural components
- Stainless steel surfaces
- Copper components
- Steel and ferrous metal
- Industrial machinery and equipment
- Commercial and institutional metal surfaces
- Food-processing and USDA-inspected facilities
- Maintenance coating systems
- Metal surfaces requiring epoxy or urethane topcoats
- Projects where traditional solvent-based etching primers are undesirable
Environmental and Regulatory Compliance
HP1750 complies with numerous regional air-quality requirements, including:
- OTC
- OTC Phase II
- CARB
- CARB 2007
- CARB 2019
- Utah
- Arizona Maricopa County
- South Coast Air Quality Management District requirements
It is also suitable for use in USDA-inspected facilities when applied and used in accordance with applicable requirements.
Recommended For: Interior and exterior ferrous and non-ferrous metal, including properly prepared aluminum, galvanized metal, steel, stainless steel, and copper. HP1750 is ideal where exceptional adhesion, corrosion resistance, easy application, and broad topcoat compatibility are required.
COLORS: Translucent Green ONLY
COVERAGE: 300 – 400 Sq. Ft. per gallon
Cleanup: Soap and water
Resin Type: Waterborne Acrylic
Recommended Use: Interior or exterior
MPI Rating: N/A
VOC Level: < 200 g/L - VOC Compliant in all regulated areas.
Certifications & Qualifications:
- Qualifies for LEED® v4 Credit
- Qualifies for CHPS low emitting credit (Collaborative for High Performance Schools)
- CDPH v1 Emission Certified
- Suitable for use in USDA inspected facilities
DRY TIMES:
- To touch: 30 Minutes
- To Recoat: 2 Hours
- High humidity and cool temperatures will result in longer dry, recoat and service times.
COMPLIANCE & CERTIFICATIONS:
- OTC
- OTC II
- CARB
- CARB07
- CARB19
- UTAH
- AZMC
- SCAQMD
- Eligible for LEED® v4
- CDPH Emissions Certified
- Eligible for CHPS low emitting credit (Collaborative for High Performance Schools)
- Class A (0-25) over non-combustible surfaces when tested in accordance with ATSM E-84.
- Suitable for use in USDA inspected facilities.
SURFACE PREPARATION: All grease, oil, dirt, mildew, or any other surface contaminants must be removed using HP6000 Oil & Grease Emulsifier or SSPC-SP1 solvent cleaning.
- Ferrous Metal: All loose rust and mill scale should be removed prior to applying this product. A minimum of SSPC-SP6 Commercial Blast or abrasive blasting is recommended for severe environmental exposures. Small areas may be cleaned in accordance with SSPC-SP2 Hand Tool Cleaning or SSPC-SP3 Power Tool Cleaning or SSPC-SP13 Power Tool Cleaning to bare metal. Tightly adhering rust may be coated over provided the surface is intended for use in mild atmospheric exposures.
- Non-Ferrous Metal (Galvanized, Aluminum, etc.): Remove surface contaminants using HP6000 Oil & Grease Emulsifier or SSPC-SP1 solvent cleaning.
- Previously Painted Surfaces: Clean using HP6000 Oil & Grease Emulsifier or solvent washed as outlined above. Dull glossy surfaces by sanding. Remove all loose, flaking or peeling paint prior to application.
APPLICATION: Stir thoroughly before and occasionally during use. Thinning is not required although a small amount of water (up to 8 fl. oz. per gallon) may be added for preferred application properties. For best results, use a premium nylon/polyester brush, roller, or a similar product. This product can also be sprayed.
- Spray, Airless: Pressure / 1,500 – 2,500 PSI Tip / 0.013 – 0.017
- Air Spray (Pressure Pot): 704 or 765 air cap and Fluid Tip E
- NOTE: Do not apply if material, substrate or ambient temperature is below 50 °F (10 °C) or above 90 °F (32 °C). Relative humidity should be below 85%. Do not apply if within 5 degrees of dew point or if rain is expected within 12 hours of application.
LIMITATIONS:
- Not recommended for floor applications
- Not recommended for immersion service
- Do not apply if material, substrate or ambient temperature is below 50 °F (10 °C) and with humidity levels less than 85%.
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