Metal Protection Additives

A corrosion inhibitor is an additive that helps protect metal surfaces against rust and corrosion. By creating a protective film, it shields metal parts from moisture and other corrosive agents, extending equipment life and reducing maintenance costs. Calcium sulfonate-based corrosion inhibitors are especially valued for their long-lasting protection and excellent resistance to water exposure.

SEQENS offers a high performance range of anti-corrosion products and rust preventives based on calcium sulfonate technology. These specialized products protect metal surfaces, parts, and equipment during indoor storage, handling, transportation, and industrial application.

Calcium sulfonate additives provide excellent water displacement, superior salt spray resistance, and reliable long-term protection for metal surfaces. They offer a durable barrier against moisture, helping prevent rust formation and extending component lifespan over many years.

The ARCOT® product selection features high quality calcium sulfonate additives designed for custom anti-corrosion formulations. They serve as a key component in protective oil formulations, solvent-based coatings, greases, and specialized lubricants.

Solvent-based grades provide fast-drying, thin protective films ideal for temporary rust prevention during parts handling. Mineral oil-based grades deliver heavy-duty, long-term protection especially suited for storage under high humidity and direct water contact conditions.

Start by defining the required protection duration (short, medium or long term), then select the appropriate formulation type: mineral oil, solvent-based or water-emulsifiable system. Next, identify your key performance priority: maximum corrosion protection, demulsification, low viscosity/fluidity, non-flammable properties or label-free formulation. For example, ARCOT® 625 is recommended for short-term protection with high fluidity, ARCOT® 649 for superior water separation, and ARCOT® 645 BS for maximum long-term corrosion protection. Water-emulsifiable formulations typically rely on ARCOT® 785 or ARCOT® 785 B. The selection process therefore combines protection duration, formulation type and targeted performance.

Yes, our ARCOT 642N and ARCOT 644 additives demonstrate excellent compatibility when used in combination with extreme pressure (EP) agents, anti-wear additives, and synthetic lubricants. Formulators use them across different industrial gear oils, metalworking fluids, and greases to ensure complete surface protection.

Our technical R&D team provides specialized know-how to help customers design, test, and optimize specific rust preventives. We assist in adjusting active sulfonate content, improving film-forming behavior, and ensuring compliance with environmental and safety standards.

Yes, SEQENS develops bio-based, non-labeled, and low-VOC alternatives to address modern environmental and safety challenges. These sustainable options offer effective corrosion prevention while reducing ecological impact and improving handling safety.

An Overbased Calcium Sulfonate (OBCaS) is a multifunctional lubricant additive combining corrosion protection, detergency, alkalinity reserve and water resistance in a single chemistry. Thanks to its high content of dispersed calcium carbonate, OBCaS forms a protective film on metal surfaces, helping prevent rust and corrosion even in wet or aggressive environments. It is widely used in industrial lubricants and marine oils, but also serves as the key building block for calcium sulfonate greases. In these greases, OBCaS acts both as a protective additive and as the precursor of the thickener structure, contributing to exceptional load-carrying capacity, mechanical stability and water resistance. This unique combination makes OBCaS a preferred technology for demanding lubrication applications where durability and equipment protection are critical.