MR. JO Phenalkamine Hardener Selector Guide
MR. JO Phenalkamine Hardener Selector Guide
Phenalkamines are the go-to curing agents for epoxy systems exposed to tough, humid, and variable site conditions. Derived from cashew nutshell liquid (CNSL), they offer excellent adhesion, chemical resistance, and tolerance to surface moisture and salt contamination — making them indispensable in marine coatings, protective linings, flooring, and civil engineering applications.
Traditionally, the market has been served by Cardolite (global leader), Kukdo, and Admark. While these brands offer good performance, most focus on large industrial pack sizes, which often create challenges for project users, contractors, and SMEs who need smaller, easy-to-handle packs for site work and batch-controlled applications.
👉 This is where MR. JO makes a difference.
We provide consistent-quality phenalkamines comparable to global benchmarks, but with a focus on user-friendly packs, designed for ease of handling at projects. Whether you’re a small applicator, a contractor running multiple sites, or an OEM testing new systems, MR. JO phenalkamines give you the flexibility and reliability you need.
📌 MR. JO Selector Guide – Phenalkamine Hardeners
| Grade | Equivalent To | Amine Value (mg KOH/g) | Viscosity @25°C (mPa·s) | Color (Gardner) | Density (g/cc) | PHR with std. resins | Key Features & Use Case |
| JH 8361 | NC541 | 300–335 | 25,000–50,000 | ≤17 | 0.97–1.00 | 50–55 | High viscosity, excellent chemical resistance, protective & marine coatings |
| JH 8362 | NC541LV | 320–345 | 1,500–3,000 | ≤16 | 0.97–1.00 | 50–55 | Low-viscosity version, easy handling, floor coatings, tank linings |
| JH 8378 | NC558 | 320–360 | 500–1,500 | ≤17 | 0.95–1.00 | 50–55 | Balanced reactivity, civil engineering & repair mortars |
| JH 8379 | NX5198 | 270–320 | 80–200 | ≤14 | 0.93–0.97 | 45–50 | Ultra-low viscosity, injection grouts, penetrative primers |
| JH 8363 | NC540i | 390–420 | 1,800–2,200 | ≤14 | 0.93–0.97 | 40–45 | Higher functionality, faster cure, structural adhesives |
| JH 8380 | GX5368 | 340–370 | 2,100–2,600 | ≤14 | 0.93–0.97 | 50–55 | Heavy-duty, salt-tolerant coatings, high-build epoxies |
🎯 Why Choose MR. JO Phenalkamines?
- User-friendly pack sizes – tailored for contractors, project users & applicators.
- Consistent quality – comparable to global benchmarks.
- Versatile portfolio – grades for coatings, flooring, adhesives, civil, and injection.
- Site-ready solutions – designed for real-world humidity and moisture challenges.
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