Aqueous suspensions of alumina particulates, at least a portion of which comprising ultrafine boehmite, are prepared by maintaining a pH<9 aqueous formulation of poorly crystallized and/or amorphous activated alumina powder for such period of time as to effect the at least partial transformation of...http://www.google.com.au/patents/US4344928?utm_source=gb-gplus-sharePatent US4344928 - Process for preparing alumina particulates, at least a fraction of which being ultrafine boehmite
