<p>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.</p>
申请公布号
EP0754650(B1)
申请公布日期
2001.06.27
申请号
EP19960108381
申请日期
1996.05.25
申请人
DEGUSSA AG
发明人
RAUSCH, RALF, DR.;ESCH, HEINZ;KUHLMANN, ROBERT;TUERK, GUENTER, DR.;MEIER, KARL;MEON, WALTER, DR.
