Zinc Free Primers

Zinc Free Primer Coating

At Rainbow Powder Coating, we offer zinc-free primer systems that combine best-in-class corrosion protection with a strong commitment to environmental sustainability. These innovative primers are engineered for use across multiple industries, reducing long-term maintenance costs while enhancing the service life and reliability of metal structures.

Why Choose Zinc-Free Primers?

• High Corrosion Resistance – Protects against rust, oxidation, and structural damage, reducing costly repairs and downtime.

• Eco-Friendly Formulation – Free from zinc and heavy metals, making it safer for the environment and compliant with modern sustainability standards.

• Outstanding Adhesion – Creates a strong bond to the substrate, ensuring a durable base layer for powder and liquid topcoats.

• Proven Durability – Tested to DIN ISO 12944-6, achieving protection up to C5-I long class, even under severe conditions such as marine atmospheres, high humidity, and extreme climates.

Advanced Coating Technology

Our zinc-free primers are developed with High Density Crosslinking (HDC) technology, creating a sealed barrier layer that isolates the metal substrate from its environment. This advanced formulation provides:

• Excellent mechanical strength

• Superior resistance to chemical exposure

• Long-lasting performance in aggressive conditions

Applications

Zinc-free primers are versatile and suitable for a wide spectrum of uses, including:

• Architectural – facades, gates, fences, windows, doors, and outdoor furniture

• Industrial – machinery, metal structures, equipment frames, and enclosures

• Automotive & Transportation – chassis, body panels, trailers, and agricultural equipment

• General Metalwork – ironwork, fabrication, and decorative metal components

Sustainability & Compliance

By eliminating zinc and hazardous heavy metals, our epoxy-based zinc-free primers are:

• Eco-forward – no hazardous labeling required under chemical safety standards

• Resource-efficient – reducing waste and minimizing environmental footprint

• Future-ready – aligned with global moves toward greener, safer coating systems