MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202621049481 A) filed by Hsnc University, Mumbai on April 17, 2026, for Method For Preparing Cementitious Compositions Using Green-Synthesized Calcium-Loaded Ca-Polyamps Hydrogels.
Inventors include Col. Prof. Hemlata K. Bagla; Kuldeep Rajpurohit; Sabrina Afzal Shaikh; and Ashok Kumar Pandey.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: Method for Preparing Cementitious Compositions Using Green-Synthesized Calcium-Loaded Ca-polyAMPS Hydrogels The present invention discloses a green, initiator-free process for synthesizing a calcium-loaded hydrogel based on 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) using low-frequency ultrasonic irradiation. The process involves subjecting an aqueous AMPS solution to ultrasonic cavitation (20 ± 3 kHz), resulting in in-situ radical generation from protonated AMPS without external initiators, catalysts, or organic solvents, thereby forming a crosslinked hydrogel. The hydrogel is subsequently converted into a calcium-loaded form (Ca-polyAMPS) via ion exchange using calcium chloride solution. The resulting hydrogel is incorporated into cementitious materials as an internal curing agent. The modified cement exhibits improved tensile strength, controlled hydration behaviour, and reduced heat of hydration. The invention provides an environmentally sustainable and efficient approach for hydrogel synthesis and enhances the performance of cement-based materials.
Disclaimer: Curated by HT Syndication.
