公开(公告)号：NZ524947A

公开(公告)日：2005-03-24

申请号：NZ52494701

申请日：2001-10-13

Applicant: BASF AG

Inventor： DROHMANN CHRISTIAN ,  WITTELER HELMUT ,  SANNER AXEL ,  ZIEHL JURGEN ,  HAMM DE BANTLEON ELISA ,  PETSCH TOBIAS ,  ATHAUER KLEMENS ,  LEBTIG BARBARA

IPC: A23L2/70 ,  B01D37/02 ,  B01D39/04 ,  B01D39/06 ,  B01D39/16 ,  B01J20/26 ,  C12C7/16

Abstract: Filter aid, its preparation and use in filtering process is disclosed, wherein the filter aid comprises 20-95 wt.% polystyrene and 5-80 wt.% polyvinylpolypyrrolidone (PVPP) and optionally silicate, carbonate, oxide, silica gel, diatomaceous earth and/or other polymers.