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Environmentally compliant, heavy-metal-free formulation meeting RoHS and REACH requirements.
Provides excellent passive corrosion inhibition through formation of stable protective iron phosphate complexes on steel surfaces.
High pigment volume concentration (PVC) stability in both water-based and solvent-based primers.
Superior dispersion performance with low viscosity impact, enabling high-solids coating formulations.
Enhanced long-term rust prevention under cyclic salt-spray and humidity exposure conditions.
Industrial maintenance coatings for offshore platforms and marine structures.
Heavy-duty protective primers for bridges, pipelines, and power transmission towers.
Anti-corrosive topcoats for railcar underbodies and mining equipment.
Water-based epoxy and acrylic primers for structural steel fabrication.
Intumescent fire-protection coatings requiring compatible, non-reactive pigments.
| Chemical Type | Modified iron phosphate-based anti-corrosive pigment |
| Product Form | Fine dry powder |
| Appearance | Greenish-gray free-flowing powder |
| Primary Applications | Steel primers and anti-corrosive coatings |
| Key Features | Non-toxic, non-hazardous, low-VOC compatible |
| Recommended Loading Range | 15–25% by weight in primer formulations |
| Storage Conditions | Store in cool, dry place; keep container tightly sealed |
| Shelf Life | 24 months from date of manufacture under proper storage |
Q1: What is the primary corrosion-inhibition mechanism of Cathay FERROTINT Green F17B?
A: Cathay FERROTINT Green F17B functions primarily through passive film formation on ferrous metal substrates. Its active components promote the development of a stable, adherent oxide layer that impedes electrochemical corrosion processes, particularly in immersion and high-humidity service environments.
Q2: Is F17B compatible with water-based coating systems?
A: Yes, F17B is formulated for compatibility with both solvent-borne and water-based industrial coatings, including acrylic, epoxy, and styrene-acrylic dispersions. It demonstrates good dispersion stability and minimal impact on pH or rheology when properly incorporated using standard pigment grinding techniques.
Q3: How does F17B compare to traditional zinc phosphate pigments in terms of environmental profile?
A: Unlike conventional zinc phosphate, F17B is designed to be free of heavy metals such as lead, cadmium, and hexavalent chromium, and contains no intentionally added zinc. It aligns with evolving regulatory expectations for reduced ecotoxicity and supports formulators aiming for more sustainable anti-corrosive solutions.
Q4: What surface preparation is recommended before applying coatings containing F17B?
A: Optimal performance requires thorough removal of rust, mill scale, salts, oils, and other contaminants. Blast cleaning to Sa 2½ (ISO 8501-1) is strongly recommended for demanding applications, though F17B also delivers improved tolerance to marginally prepared surfaces compared to non-inhibitive pigments.
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