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Identification & Functionality
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Features & Benefits
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Admark Polycoats Phenalkamines are based on cashew nutshell liquid (CNSL), a natural, non-food chain, and renewable biomaterial. CNSL is a reddish brown viscous liquid extracted from the soft honeycomb structure inside the cashew nutshell.
CNSL is decarboxylated and distilled to yield high purity Cardanol, a highly desirable alkylphenolic compound used in the coatings and adhesive industries. Cardanol is used as a primary building block for Admark Polycoats epoxy curing agents and epoxy diluents and modifiers.
The product obtained by Mannich reaction of Cardanol, formaldehyde, and certain amines is called a Phenalkamine. Phenalkamines share similar advantages like other Mannich based curing agents, such as: extremely fast cure, low temperature cure (even below 0°C), good chemical resistance, good moisture tolerance, and non-blushing properties. The fast and low temperature cure properties of Phenalkamines have several benefits for coating formulations. Fast cure also means protected surfaces can be re-coated or returned to service in a short period.
Applications & Uses
- Applications
- Coating Type
- Low Viscosity Phenalkamines
- Suitable for making high solids and solvent free coatings.
- Benzyl alcohol and Nonyl Phenol free hardeners for epoxy coatings.
- Suitable for applications: Structural steel and concrete primers.
- Applications: Potable water pipe coating, tanks.
- For Better Handling low viscosity Phenalkamines is preferred.
- High solids, VOC Free Phenalkamines
- 100 % Solids, VOC free Phenalkamines are preferred for excellent workability.
- Very fast drying properties. Ideal for applications where a fast return to service is required.
- Most suitable for low temperature cure.
- Excellent anticorrosive properties. Suitable for concrete primers on damp surfaces.
- No induction time required. Non-toxic.
- Suitable for high solids surface tolerant marine, industrial, and protective coatings.
- Special Grade – Excellent combination of rapid cure and long pot-life at low (< -10 °C/14 °F) temperatures.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Solids Content | 78-82 | % NVM | — |
| Color | 17 | Gardner | — |
| Viscosity at 25°C | 3000-5000 | cps | — |
| Amine Value | 230 - 270 | mg KOH/g | — |
| AHEW | 164 | — | — |
| PHR with Epoxy Resin (EEw-190) | 86 | — | — |
| Thin Film Set Time at 25°C (200 µ WFT) | 4 | — | — |
| Thin Film Set Time at 5°C (200 µ WFT) | 12 | — | — |
| Thin Film Set Time at 0°C (200 µ WFT) | 18 | — | — |