Sherwin Williams Acrolon 7700
High performance acrylic polyurethane topcoat with outstanding colour and gloss retention
Sherwin-Williams Acrolon 7700 is a premium two-component, high solids acrylic polyurethane topcoat developed to provide long-term protection and an attractive decorative finish for steel and other suitably primed substrates. Designed for demanding industrial and marine environments, it delivers exceptional colour stability, gloss retention and weather resistance, helping structures maintain their appearance for years even in aggressive outdoor conditions.
Suitable for both new construction and maintenance projects, Acrolon 7700 is commonly specified as the finishing coat over high-performance anti-corrosive primer systems on steelwork, bridges, tanks, offshore structures, conveyors and other exposed assets. Approved for use in high-performance architectural applications under ISO 12944 (C2 to C5 exposure zones). It is also approved for use over FIRETEX® intumescent coatings, making it an excellent choice where both corrosion protection and passive fire protection are required.
Its fast curing characteristics allow application in temperatures as low as 5°C, helping reduce downtime and increase productivity on site. When even faster turnaround is required, Acrolon 7700 can be used with the Acrolon 7700 PUR Accelerator to further reduce drying times.
Available in both gloss and semi-gloss finishes and a wide range of colours, Acrolon 7700 provides a durable, UV-resistant finish that protects against corrosion, abrasion and atmospheric weathering while maintaining a professional appearance throughout its service life. As part of the Sherwin-Williams Global Core range, it delivers consistent performance and colour matching across international projects.
Recommended uses
Acrolon 7700 is ideal for:
- Structural steel
- Bridges and highways
- Storage tanks and vessels
- Offshore platforms
- Marine structures
- Steel fabrication
- Power generation facilities
- Oil and gas installations
- Water and wastewater treatment plants
- Pharmaceutical and food processing facilities
- High-performance architectural steelwork
Key features
- High solids acrylic polyurethane technology
- Excellent long-term gloss and colour retention
- Outstanding resistance to UV exposure and weathering
- Durable finish with excellent corrosion protection when used over approved primer systems
- Suitable for shop and on-site application
- Fast drying, even at temperatures as low as 5°C
- Available in gloss and semi-gloss finishes
- Compatible with FIRETEX® intumescent coating systems
- Can be accelerated using Acrolon 7700 PUR Accelerator
- Available in a wide range of colours
- Suitable for worldwide specifications with consistent global performance
Frequently Asked Questions
What is Acrolon 7700 used for?
Acrolon 7700 is used as a high-performance finishing coat over anti-corrosive coating systems, providing long-lasting weather protection and excellent colour and gloss retention on steel structures and industrial assets.
Can Acrolon 7700 be used outdoors?
Yes. It has been specifically formulated for long-term exterior exposure and offers excellent resistance to sunlight, UV degradation and harsh weather conditions.
Is Acrolon 7700 suitable for marine environments?
Yes. It is widely specified for marine and offshore applications where durability, corrosion resistance and appearance are essential.
Can it be applied over intumescent coatings?
Yes. Acrolon 7700 is approved for use as a decorative topcoat over Sherwin-Williams FIRETEX® intumescent coatings.
| Suitable Substrates: | Correctly prepared and primed steel, galvanised steel and approved existing coating systems. |
| Shelf Life: | Refer to the latest Product Data Sheet. |
| VOC Content: | High solids formulation. Refer to the Product Data Sheet for specific values. |
| Application Method: | Airless spray, conventional spray, brush (small areas) or roller (small areas). |
| Theoretical Coverage: | Up to 11.2m² per litre at 50 microns DFT (allowing for no losses). |
| Finish: | Gloss or Semi-Gloss |
| Volume Solids: | Approximately 56% (colour dependent). |
| Pot Life: | Approximately 2 hours at 20°C. |
| Application Temperature: | Typically from 5°C upwards. |
| Full Cure: | Approximately 7 days at 20°C. |
| Compatible Primers: | Sherwin-Williams epoxy primers and approved anti-corrosive coating systems. |
| Recommended Dry Film Thickness (DFT): | 50–75 microns per coat. |
| Appearance: | Smooth, durable decorative finish |
| Weather Resistance: | Excellent. |
| Abrasion resistance: | Very Good. |
| Recommended Wet Film Thickness (WFT): | 90–135 microns per coat. |
| Pack Size: | Varies depending on colour and specification. |
| Product Name: | Sherwin-Williams Acrolon 7700 |
| Product Type: | Two-component high solids acrylic polyurethane topcoat |
| Colour Range: | Wide range of RAL, BS and bespoke colours (subject to availability) |
| Recommended Uses: | Structural steel, bridges, offshore structures, tanks, marine assets, power stations, industrial buildings, water treatment facilities and oil & gas installations. |
| Application Areas: | Internal and external. |
| Mix Ratio: | Refer to the latest Sherwin-Williams Product Data Sheet. |
| Touch Dry Time: | Approximately 2 hours at 20°C. |
| Minimum Recoat Time: | Approximately 5 hours at 20°C. |
| UV Resistance: | Excellent. |
| Chemical Resistance: | Good resistance to atmospheric contaminants, splash and spill exposure when used within a complete coating system. |
| Corrosion Protection: | Excellent when applied over approved anti-corrosive primers. |
| Compatible Topcoat Accelerator: | Acrolon 7700 PUR Accelerator. |
| Intumescent Compatibility: | Suitable for use over Sherwin-Williams FIRETEX® intumescent coatings. |
| Cleaning Solvent: | Sherwin-Williams recommended thinner/cleaner. |
| Hazardous Product: | Yes. |
| UN Number: | UN1263. |
| Transport Classification: | Class 3 - Flammable Liquid. |
| Packing Group: | III. |
| Manufacturer: | Sherwin-Williams Protective & Marine Coatings. |
