Casrust® Corrosion Inhibition – Comprehensive Rust Protection for Water-Based Coatings

The Casrust® series from CAS Additives offers a dedicated portfolio of high-performance corrosion inhibitors designed for waterborne paints and coatings. Featuring grades such as Casrust® I50 (universal inhibitor for waterborne systems), I51 (welding-seam specific flash-rust protection), I52 (zero-VOC in-can protection), I60/I61 (eco-friendly, nitrite-free flash-rust inhibitors), I62 (for soft metals like copper and brass), and I70 (long-term inhibitor for direct-to-metal applications), the range provides formulators with tailored solutions for prevention of flash rust, in-can rust and long-term substrate corrosion. 

By integrating Casrust® inhibitors into painting or coating formulations, manufacturers achieve stronger adhesion, reduced pigment/metal interaction, and longer service life of metal substrates. These additives help control rust during storage (in-can) and application (flash rust), as well as improve protection of finished coatings against corrosive environments. The result: enhanced performance, decreased maintenance costs, and better reliability for B2B coatings systems.