-
公开(公告)号:BR7100245D0
公开(公告)日:1973-03-13
申请号:BR24571
申请日:1971-01-14
Applicant: HOECHST AG
Inventor: VON PLESSEN H
IPC: C09B62/493 , C09B31/04
-
公开(公告)号:IN144570B
公开(公告)日:1978-05-13
申请号:IN1213CA1974
申请日:1974-06-04
Applicant: HOECHST AG
Inventor: SCHIESSLER S , VON PLESSEN H , FISCHER E
Abstract: Contaminated sulfuric acid which may contain water, organic compounds and inorganic salts is converted to almost pure concentrated sulfuric acid by passing the acid through a Pauling plant and distilling the concentrated contaminated acid.
-
公开(公告)号:BR6801359D0
公开(公告)日:1973-02-20
申请号:BR20135968
申请日:1968-08-09
Applicant: HOECHST AG
Inventor: MEINGER F , VON PLESSEN H
-
公开(公告)号:BR6801361D0
公开(公告)日:1973-01-02
申请号:BR20136168
申请日:1968-08-09
Applicant: HOECHST AG
Inventor: MEININGER F , VON PLESSEN H
IPC: C09B62/489
-
-
-