Jotamastic 90
Surface-tolerant, abrasion-resistant epoxy mastic primer for maintenance and repair where optimum surface preparation is not possible. Provides long-lasting protection in high corrosivity environments. Can be used as primer, midcoat, finish coat, or single-coat system in atmospheric and immersed environments. MCI tintable in a wide range of colours. Sub-zero application capable. NORSOK M-501, LEED, and BREEAM certified.
Key Features
Technical Specifications
Product Properties
- Volume Solids
- 80 ± 2%
- VOC (EU Directive)
- 234 g/l
- Density
- 1.4 kg/l
- Flash Point
- 35°C
Film Build
- Dry Film Thickness (DFT)
- 100–300 μm
- Gloss Level
- Semi gloss (35–70 GU @ 60°)
Application
- Mixing Ratio
- 3.5:1 (Comp A : Comp B Standard)
- Thinner
- Jotun Thinner No. 17
- Airless Spray
- Nozzle 19–25 thou, 150 bar / 2100 psi
- Pot Life
- Standard 2h / Winter Grade 45 min @ 23°C
Drying Times (23°C)
- Drying Schedule
- Surface dry 4h, Walk-on dry 6h, Overcoat min 3h, Cured 7 days @ 23°C (Standard)
Performance
- Heat Resistance
- Dry atmospheric 90°C continuous; Immersed sea water 50°C/60°C; Immersed crude oil 80°C/90°C; Winter Grade 120°C continuous
- Certificates & Approvals
- Pre-qualified NORSOK M-501. Tested to LEED and BREEAM. Certified IMO Res.288(87) — PSPC Crude Oil Tanks.
Packaging
- Colours Available
- Black, white, and MCI tinting system
- Pack Sizes
- 3.55L + 1L (4.55L kit); 15.6L + 4.4L (20L kit)
- Shelf Life
- Comp A 48 months, Comp B 24 months
Suitable Substrates
Environments
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