MUMBAI, India, April 10 -- Intellectual Property India has published a patent application (202411071814 A) filed by Chairman, Defence Research & Development Organisation, New Delhi, on Sept. 23, 2024, for 'a process for separation of chemical components of a flame-retardant aramid fabric.'
Inventor(s) include Kumar, Mysuru Sadashiva Yogendra; Verghese, Francis Vadakumchery; Shetty, Pallavi; Nair, Jayendran Somesekharan; and Indushekar, Rama Krishna.
The application for the patent was published on April 10, under issue no. 15/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure relates to a process for separation of chemical components of a flame-retardant aramid blended fabric. The process comprises the steps for the selective separation of chemical components of the flame-retardant aramid blended fabric. In the first step, selective extraction of first component, (Nylon 66) using 90% formic acid and in the second step selective extraction of third component, meta-aramid (Nomex) using dimethyl acetamide comprising 1.5 wt% a LiCl, under the assistance of Microwave having a frequency of 2.45GHz to obtain the residual second component, para-aramid (Kevlar) in the extraction cell. All the separated chemical components were dried and further subjected for the analysis by Thermogravimetric analysis (TGA) and Fourier Transform Infrared (FTIR) for confirmation in comparison with the respective standard compound profiles."
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