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Corrosion specialist Cortec has released a water-based corrosion inhibitor additive that does not contain heavy metals. Cortec’s M-120 can be used alone or in conjunction with other inhibitors to increase the corrosion protection abilities of water-based and solvent-based systems. It is recommended for use in acrylic and alkyd resin systems.

Heavy metal free water based corrosion inhibitor additive

Traditional coatings rely on sacrificial metals such as zincs and chromates for corrosion protection. Due to their large particle sizes, these inhibitors leave gaps that make it easier for corrosion to begin in micro-cavities. Cortec’s M-120 additive contains a blend of corrosion inhibitors that protect against corrosion by forming a microscopic inhibitor layer along the contours of the metal substrate. As a result of the fact that M-120 contains inhibitors that have an attraction to metal and desire to conform to the intricacies of metal surfaces, it provides a protective layer in micro-cavities for fuller inhibitor coverage.

M-120 protects carbon steel and aluminum. It contains contact corrosion inhibitors that eliminate in-can corrosion, inhibit flash rust, and provide long term protection to the metal substrate. The additive does not contain any heavy metals such as zinc phosphate, chromates, or barium. M-120 comes as an off-white/beige colored paste that can be added to coatings formulations at recommended loading levels ranging from 1.0-3.0% based on total formula weight.

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