Phenalkamines & Adducts
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.
In forced cure industrial coating applications, Phenalkamines can help to save energy by lowering oven cure temperatures or increasing production line speeds.
With over a decade of research, Admark has developed new products in Phenalkamine technology such as high solid or innovative solvent-free, low viscosity, and fast curing epoxy hardeners.
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.
| Sr. No. | Product | Solid Content NVM [%] | Key Properties | Marine Coating | Protective Coating | Industrial Coatings | Construction Concrete |
| Phenalkamines | |||||||
| 1 | AP 1040 | Solvent Free | Low viscosity, surface tolerant |  |
|
– | – |
| 2 | AP 1041 | Solvent Free | Low temperature cure, surface tolerant, excellent anti corrosion | |
|
|
– |
| 3 | AP 1041X90 | 88 – 90 | Solvent cut for good handling | |
|
|
– |
| 4 | AP 1041LV | Solvent Free | Low viscosity for high solid coating | |
|
|
– |
| 5 | AP 1057 | Solvent Free | Good film, excellent adhesion | |
|
|
|
| 6 | AP 1026 | Solvent Free | Fast cure low viscosity | |
|
– | – |
| 7 | AP 1454 | Solvent Free | Fast cure for high solid coating | |
|
|
– |
| Phenalkamine Adducts | |||||||
| 1 | AP 1080 | 78 – 82 | Very fast cure high solids and low viscosity. | |
|
|
– |
| 2 | AP 1711 | 74 – 76 | Fast cure, good blush resistance similar properties of AP 1562, high solid %. | |
|
|
– |
| 3 | AP 1087 | 68 – 72 | Fast cure, good blush resistance, adhesion and excellent corrosion protection. | |
|
|
– |
| 4 | AP 1562 | 64 – 66 | Fast cure, good blush resistance and adhesion. | |
|
|
|
| 5 | AP 1300 | 58 – 61 | Fast hardness development, very good flexibility, similar properties of AP 1087, lower solid %. | |
|
|
– |