CorrVerter for rusty surface prep can be used when sandblasting isn’t allowed

Sandblasting, water blasting, and labor-intensive grinding are common methods of restoration and surface prep for rusty metal parts or structures. However, these techniques are sometimes prohibited or not preferred for a variety of reasons. To address this need, Cortec® offers an easy but effective surface prep alternative to abrasive blasting or grinding in the form of CorrVerter® Rust Converter Primer.

CorrVerter® is a fast-drying, water-based one-component primer for rusty surfaces. It contains a unique formulation of chelating agents combined with a high solids waterborne latex that has extremely low water vapor permeability. The combination of these materials converts surface rust into a hydrophobic passive layer, creating a specialty primer with excellent protection against re-rusting of metal surfaces.

How to Apply CorrVerter®

CorrVerter® can be used almost anywhere a tight layer of surface rust is present. Rather than requiring special equipment or labor-intensive abrasion to remove the corrosion, users of CorrVerter® simply need to brush off loose rust before priming right over the surface. Once the surface is primed and passivated, it can be top-coated with either a water-based or solvent-based paint (urethanes, epoxies, acrylics, and alkyds) for further protection and aesthetics. CorrVerter® should be applied at 5.8-8.7 mils (147-221 µm) WFT (wet film thickness) in order to achieve a DFT (dry film thickness) of 3.0-5.0 mils (75-125 µm). It shows excellent 5B adhesion.

Simple Surface Prep—Plus!

In addition to simplifying surface prep, CorrVerter® has several advantages in and of itself. (1) As a water-based coating, CorrVerter® is considered to be a more environmentally responsible option and is also easier for workers to clean up. (2) It has an extremely low VOC of 0.1 lbs/gallon (12 g/L). (3) As a single-component system, it is much faster and more convenient to use than primers that require the mixing of two parts together.

Examples of CorrVerter® Used Globally

CorrVerter® has countless possible applications and has been used around the world for

• Restoration of rusty forklift rental equipment
• Restoration of corrosion damaged car rims
• Restoration of 200 corroded electrical piers
• Priming of sunflower oil reservoirs where blasting was prohibited
• Preservation of a steel spiral staircase that would have been damaged by the force of mechanical rust removal
• Passivation of rusty equipment and structural surfaces in oil and gas layup projects
• Surface prep of rusty rebar for concrete repairs
• Restoration/preservation of rusty downhole casing joint pipe exteriors