Unlike standard amine hardeners, phenalkamines provide reliable cure on damp concrete, moisture-tolerant adhesion, and blush-free films in the high relative humidity common at GCC coastal construction sites in Abu Dhabi, Dubai, Doha, Kuwait City, and Muscat.
Technical specifications
| PARAMETER | SPECIFICATION | TEST METHOD |
|---|---|---|
| Chemical Class | Phenalkamine (CNSL-based, construction grade) | — |
| Appearance | Amber to dark viscous liquid | Visual |
| Viscosity @ 25°C | 500 – 8,000 mPa·s (grade dependent) | ASTM D445 |
| AHEW | 110 – 200 g/eq | Calculated |
| Amine Value | 200 – 300 mg KOH/g | ASTM D2074 |
| Cure Condition | Ambient temperature, damp or dry substrate | — |
| Pot Life (100g mass, 25°C) | 45 – 120 min (grade dependent) | Exotherm method |
| Tack-Free Time @ 25°C | 3 – 6 hours | — |
| Min Application Temp | 5°C (above dew point) | — |
| Shelf Life | 12 months sealed, 5–30°C | — |
| HS Code | 3824.99 |
Applications
- Concrete Waterproofing & Damp Substrate Coating — Primary hardener for epoxy waterproofing coatings applied to damp or wet concrete in GCC basement structures, tunnels, underground car parks, and infrastructure where substrate drying prior to application is impractical.
- GCC Infrastructure Repair & Bridge Coatings — Used in epoxy coating systems for concrete bridge decks, parking structures, and infrastructure in GCC — Qatar's QNH and Lusail projects, Saudi Arabia's Vision 2030 infrastructure, and UAE's expanding metro and road networks.
- Industrial Floor Coatings on Green Concrete — Enables epoxy floor coating application on concrete that has not fully dried — reducing construction programme time on GCC projects where the construction schedule does not allow 28-day concrete drying before floor coating application.
- Pipe & Tank Lining on Potable Water Infrastructure — Phenalkamine-cured epoxy linings for potable water tanks, pipelines, and reservoirs — applicable in GCC water infrastructure where assets cannot be fully dewatered or dried prior to lining application.
- Marine & Coastal Infrastructure Protection — Applied in splash zone and tidal zone coatings on GCC coastal structures — jetties, seawalls, piers, and port facilities where salt spray, humidity, and wave action make damp-surface cure essential.
Key properties
- Moisture-tolerant cure — reliable performance on damp GCC substrates
- No amine blushing in high-humidity GCC coastal conditions
- Excellent adhesion to damp concrete, brick, and masonry
- Outstanding chemical and water resistance in service
- Good flexibility — resists cracking under GCC thermal cycling
- Effective cure at temperatures as low as 5°C (high-altitude KSA sites)
- Compatible with RAYPOXY YR-128 and all standard BPA liquid epoxy resins
- Long pot-life variants available for large-area spray application
Usage and recommendations
Use with RAYPOXY YR-128 liquid epoxy resin. Mix ratio: 60–100 g phenalkamine per 100 g epoxy (EEW 190) — calculate from actual AHEW on batch COA. For damp surface application: substrate must be firm, sound, and free of standing water — damp is acceptable, puddles are not. In GCC summer conditions: use early morning application (lower temperature, lower humidity) for maximum pot-life. Pot-life at 45°C is 30–50% of the 25°C datasheet value. Contact Raykem for construction-grade phenalkamine grade selection.
Packaging
- 190 kg MS Barrel
- IBC on request
- Custom packaging available
Storage and shelf life
Store in sealed containers at 5–30°C in a ventilated area, away from direct sunlight. Phenalkamines react with atmospheric CO₂ and moisture — keep sealed. Shelf life: 12 months.