Company Filing History:
Years Active: 2016-2017
Title: Uma Chatterjee: Innovator in Anion Exchange Membranes
Introduction
Uma Chatterjee is a prominent inventor based in Bhavnagar, India. She has made significant contributions to the field of materials science, particularly in the development of anion exchange membranes. With a total of 2 patents, her work focuses on innovative processes that enhance the efficiency of electrodialysis applications.
Latest Patents
Uma Chatterjee's latest patents include two groundbreaking inventions. The first patent is titled "Anion exchange membrane for electrodialysis applications and process for the preparation thereof." This invention relates to the preparation of novel anion exchange membranes from bicomponent or tricomponent copolymers containing both quaternizable and cross-linkable moieties. The bicomponent copolymers consist of polyacrylonitrile and poly(2-dimethylaminoethyl) methacrylate, while the tricomponent copolymers include polyacrylonitrile, poly(2-dimethylaminoethyl) methacrylate, and poly(n-butyl acrylate). The quaternization of dimethyl amino groups of the copolymer by methyl iodide, followed by cross-linking of acrylonitrile groups by hydrazine hydrate, results in an anion exchange membrane with desirable properties such as high ion exchange capacity (1.30-1.50 meq/g) and high transport number (0.92-0.93) for direct use in an electrodialysis unit. The tricomponent anion exchange membrane, containing 32 wt % PDMA, 17 wt % PnBA, and 51 wt % PAN, exhibits improved performance, particularly in terms of low power consumption and high current efficiency during water desalination.
The second patent describes the "Process for the preparation of anion exchange membrane." This invention outlines a greener method for preparing an inter-polymer film of p-methylstyrene-co-divinylbenzene and converting it into an anion exchange membrane without the use of chloromethyl ether. The membrane, which includes a polyethylene binder, demonstrates equivalent or superior performance compared to anion exchange membranes prepared through traditional methods.
Career Highlights
Uma Chatterjee is affiliated with the Council of Scientific & Industrial Research, where she continues to advance her research in membrane