The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2025
Filed:
Jun. 25, 2020
Council of Scientific & Industrial Research, New Delhi, IN;
Ongc Energy Centre, New Delhi, IN;
Geetanjali Shukla, Gujarat, IN;
Mani Bhushan, Gujarat, IN;
Sonu Kumar, Gujarat, IN;
Arindam Kumar Das, Gujarat, IN;
Prerana Sharma, Gujarat, IN;
Anuj Kumar Singh, Gujarat, IN;
Vinod Kumar Shahi, Gujarat, IN;
Bharat Bhargava, New Delhi, IN;
Damaraju Parvatalu, New Delhi, IN;
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH, New Delhi, IN;
Abstract
Anion-exchange membranes are useful for electro-membrane processes such as electrodialysis (water desalination, separation of inorganics from organic molecules, separation of specific inorganic ion, etc.), in-situ ion-exchange and ion substitution, electro-deionization for producing ultrapure water, polymer electrolyte membrane for alkaline fuel cell and electrolysis applications. The present invention discloses an acid and base resistant fluorinated hydrocarbon based anion-exchange membrane and its method of preparation thereof. In the first step co-polymerization is carried out between N-isopropylacrylamide and 1-vinylimidazole. In the second step, obtained inter-polymer of isopropylacrylamide-co-vinylimidazole co-polymer is mixed with poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) (IA-co-VI/PVDF-co-HFP), which is used for casting membrane film of desired thickness. The obtained casted membrane thin film is quaternized in methyl iodide solution.