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Cortec highlights its top three primer/topcoat combos for micro-corrosion inhibiting protection

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Jason Morgan is the editor of Fleet Equipment. He has more than 15 years of B2B journalism experience covering the likes of trucking and construction equipment, real estate, movies and craft beer industries.

Whenever time and resources allow, painters typically achieve the best coating results from applying both a primer and a topcoat. Once this route has been chosen, the next important step is to select the best primer/topcoat combination for the application. To help coaters make this decision where metals protection is concerned, Cortec Corp. highlighted its top three primer-topcoat combinations from its portfolio of micro-corrosion inhibiting coatings.

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Solvent-based primer/topcoat

For those seeking extreme protection in harsh outdoor, unsheltered applications, Cortec highlights its VpCI-396/VpCI-384 combination. VpCI-396 is a fast drying, solvent-based moisture cure urethane one coat primer that can be applied direct to metal (DTM). VpCI-396 primes the way for application of VpCI-384, a solvent-based urethane topcoat that offers adhesion to moisture cure urethanes like VpCI-396 primer. VpCI-384 is a two-component system, which adds another step to the process for mixing but offerscross-linking action that takes place between the two parts, which Cortec says leads to greater durability in the long run, according to the company. Cortec’s VpCI-396/VpCI-384 combination is recommended for use in the harshest conditions where a urethane topcoat would typically be applied.

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Water-based primer/topcoat

While solvent-based coatings are sometimes needed to withstand extreme conditions, water-based coatings are often preferred for environmental or worker advantages. For example, water-based coatings generally have lower VOC than solvent-based coatings and are typically easier to clean up just with water. Cortec recommends its VpCI-395/EcoShield 386 combination. VpCI-395 is a fast-drying water-based epoxy primer, and as a two-component system, it has special cross-linking advantages for increased durability, the company noted. Another advantage is its low VOC of 0.2 lbs/gal (24 g/L). EcoShield 386 provides UV resistance and therefore can be used as an outdoor coating. It can be applied clear or matched to most custom colors.

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Single-component, water-based primer/topcoat

For those who want to go the water-based route without the extra hassle of mixing a two-component primer, Cortec also offers a single component water-based primer/topcoat combination for corrosion protection in harsh conditions. VpCI-375 is a water-based acrylic one coat DTM system that the company says is resistant to sagging or running and forms a tough protective barrier. It offers UV resistance when dried.

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