Aquivion® D79-25BS is a perfluorosulfonic acid ionomer dispersion that exhibits an Equivalent Weight (EW) of 790 g/eq. Polymer concentration is 25% w/w. Solvent system is >99% w/w water and is free of ethers.

Aquivion® dispersions are based on the unique Short Side Chain copolymer of Tetrafluoroethylene (TFE) and Sulfonyl Fluoride Vinyl Ether (SFVE) F2C=CF-O-CF2CF2-SO2F produced by Syensqo. The perfluorosulfonic acid ionomer dispersions contain its acid form (-SO3H) and are available in various EWs. Aquivion dispersions can be used by the customer to manufacture dispersions based on a variety of solvent blends.

These dispersions are suitable for electrode binder applications of electrochemical devices including fuel cells, electrolyzers and potentially Power to X electrochemical devices. Aquivon dispersions can also be used for the production of membranes, supported or not by ePTFE or woven reinforcements.