公开(公告)号：DE59607156D1

公开(公告)日：2001-08-02

申请号：DE59607156

申请日：1996-05-25

Applicant: DEGUSSA

Inventor： RAUSCH DR ,  ESCH HEINZ ,  KUHLMANN ROBERT ,  TUERK DR ,  MEIER KARL ,  MEON DR

IPC: C01B33/143 ,  C01B33/18 ,  C01B33/193 ,  C08K3/36 ,  C08L23/06 ,  H01M2/14 ,  H01M2/16

Abstract: Pptd. silica (I) contg. 4-18 wt.% Na2SO4 is claimed. Also claimed are: (1) prepn. of the silica (I); (II) use of the silica in battery separators; and (III) battery separators per se The battery separator is pref. of polyethylene.