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Non-toxic, heavy-metal-free alternative to traditional chromate and lead-based anti-corrosive pigments.
Excellent passivation performance on steel substrates, forming a protective oxide layer that inhibits electrochemical corrosion.
High compatibility with epoxy, polyurethane, and alkyd resin systems for robust primer and maintenance coating formulations.
Good dispersibility in organic media, enabling stable pigment concentrates and low-viscosity coatings without excessive grinding.
Enhanced long-term corrosion resistance under cyclic salt-spray (ASTM B117) and humidity testing conditions.
Industrial maintenance coatings for offshore platforms and marine infrastructure.
Anti-corrosive primers for structural steel in bridges, power plants, and chemical processing facilities.
Coatings for agricultural and construction machinery exposed to abrasive and humid environments.
Protective coatings for storage tanks, pipelines, and metal roofing systems.
Waterborne and solvent-borne protective systems requiring REACH-compliant, eco-friendly corrosion inhibition.
| Chemical Type | Modified phosphate-based complex |
| Product Form | Fine, free-flowing powder |
| Appearance | Light grey to beige powder |
| Primary Applications | Anti-corrosive primers and maintenance coatings |
| Key Features | Heavy-metal-free, passivating, resin-compatible |
| Benefits | Reduced environmental impact, improved coating durability, regulatory compliance (REACH, RoHS) |
| Recommended Loading Range | 15–25 wt% in dry pigment volume (based on total non-volatile content) |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
Q1: What is the primary corrosion inhibition mechanism of HEUCOPHOS CTF?
A: HEUCOPHOS CTF functions primarily through a synergistic passivation mechanism, forming protective complexes with metal substrates—especially steel and aluminum—while also providing barrier enhancement within the coating matrix. Its phosphate-based chemistry supports stable oxide layer formation at the metal–coating interface.
Q2: Is HEUCOPHOS CTF compatible with waterborne coating systems?
A: Yes, HEUCOPHOS CTF is specifically engineered for compatibility with both solvent-borne and modern waterborne industrial coatings, including acrylic, epoxy, and polyurethane dispersions. It demonstrates good dispersion stability and minimal impact on viscosity or pot life in aqueous formulations.
Q3: How does HEUCOPHOS CTF compare to traditional zinc phosphate pigments in terms of environmental profile?
A: Unlike conventional zinc phosphate, HEUCOPHOS CTF is formulated without heavy metals such as zinc or lead, aligning with evolving regulatory expectations for sustainable corrosion protection. It offers a lower ecotoxicity profile while maintaining effective anticorrosive performance in demanding industrial applications.
Q4: What types of coatings benefit most from incorporating HEUCOPHOS CTF?
A: HEUCOPHOS CTF delivers optimal performance in primers and basecoats for industrial maintenance, automotive underbody protection, and structural steel applications—particularly where long-term durability, low VOC content, and compatibility with cathodic protection systems are required.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
