A process for producing nano sized boehmite aluminas which are stable at alkaline pH values wherein an aqueous medium of a peptized boehmite alumina is treated with a water dispersible polycarboxylic acid polymer and optionally with an organic water dispersible base having a molecular weight ranging from 500 to 3000 and having no more than three basic groupings to produce a treated boehmite alumina which forms a stable sol at a pH of greater than 6, the treated boehmite alumina having a dispersed particle size of less than 500 nm in the sol.
申请公布号
WO2005115917(A3)
申请公布日期
2007.09.13
申请号
WO2005US13681
申请日期
2005.04.21
申请人
SASOL NORTH AMERICA INC.;MARTIN, THOMAS, J.;POPE, DAVE, S.