MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202621006119 A) filed by Chemengg Research Pvt. Ltd., Pune, Maharashtra, on Jan. 21, for 'process for phase-controlled synthesis of iron oxide pigments.'
Inventor(s) include Vaibhav Ravindrakumar Acham; Agraja Vaibhav Acham; Babita Amol Kale; Aniket Revan Supekar; Shubhangi Ramdas Waman; and Shradhha Rahul Sawardekar.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The invention relates to a controlled phase-specific process and modular system for producing high-purity iron oxide pigments from iron-containing metallic residues. The method includes dissolving the residue in an acidic medium to form a ferrous sulfate solution, followed by controlled adjustment of pH, oxidation, temperature, and reaction time to selectively form hematite, limonite, or magnetite. The precipitated solids are separated, dried, and optionally thermally ignited to obtain pigments with crystallographic purity of at least 98%. The invention further provides a modular system comprising dissolution, pH-oxidation control, separation, and drying or calcination units equipped with automated monitoring and regulation. The method operates at atmospheric pressure, uses low-cost waste materials, and enables reproducible, scalable pigment production within 6-8 hours, offering improved efficiency and reduced environmental impact."
Disclaimer: Curated by HT Syndication.
