BASF completes divestiture of Bleaching Clay and Mineral Adsorbents businesses to EP Minerals. Iselin, New Jersey, July 17, 2017 – BASF has closed the previously announced transaction to sell its Bleaching Clay and Mineral Adsorbents businesses to EP Engineered Clays Corporation, an affiliate of EP Minerals, LLC, a worldwide leader in engineered products derived from industrial minerals.