Jotun Resist 78
Jotun Resist 78 is a two component moisture curing inorganic zinc ethyl silicate coating. Heat resistant up to 540°C (1004 °F) as a primer in atmospheric environments. Suitable for structural steel and piping to be exposed to highly corrosive environments.
Best Uses
Jotun Resist 78 is a fast curing, very high zinc dust containing product that conforms to the compositional requirements of SSPC paint 20, level 2 and ISO 12944-5. It provides excellent corrosion protection as part of a complete coating system. It is heat resistant up to 540 °C (1004 °F). To be used as primer in atmospheric environments. Suitable for properly prepared carbon steel substrates only. This product complies with ASTM D520 type II zinc dust.
Suitable for structural steel and piping to be exposed to highly corrosive environments, C5I or C5M (ISO 12944-2). Recommended for offshore environments, refineries, power plants, bridges, buildings and mining equipment. Specially designed as a primer for coating systems where extended durability is required.
Application
To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination. For Carbon Steel, prepare to Sa 2.5 with a surface profile of Fine to Medium G. Use air spray or airless spray. Brush is recommended for stripe coating and small areas. Care must be taken to achieve the specified dry film thickness. In order to avoid settling of heavy zinc, continuous mechanical stirring during application is recommended.
Approvals
- Pre-qualification testing in accordance with NORSOK M-501, Rev. 5, System 1, suitable for exterior exposure in offshore environment, below 120°C
- Tested by independent institute for static coefficient of friction
Notes
- Heat resistant in dry atmospheric environments at a continous 400°C. This product can withstand a peak temperature of 540 °C (1000 °F) for a longer period as well. A continuous temperature above 400 °C (752 °F) will however affect the long term performance of an inorganic zinc silicate coating. Peak temperature duration max. 1 hour
Technical Info
| Components: | Two Part |
| Type: | Moisture curing inorganic zinc ethyl silicate coating |
| Finish: | Matt |
| Stock Colours: | Grey |
| Tintable: | No |
| VOC Content: | 486.0g per Litre |
| Volume Solids: | 72% |
| Suitable Substrates: | Suitable for properly prepared carbon steel substrates only |
| Application Method: | Air Spray, Airless Spray. Use a brush for stripe coating and other small areas |
| Theoretical Coverage: | 8 - 14.4 m2 per litre |
| Wet Film Thickness (WFT): | 70 - 125 microns |
| Dry Film Thickness (DFT): | 50 - 90 microns |
| Induction Time: | - |
| Pot Life: | 8 hours at 23°C |
| Touch Dry: | 30 mins at 10°C |
| Overcoatable: | 13 hours at 10°C |
| Fully Cured: | 13 hours at 10°C |
| Cleaner / Thinner: | Jotun Thinner No. 4 or Jotun Thinner No. 25 |
| Shelf Life: | |
| Packaging: | Available in 11.6 Litres |
