公开(公告)号：DE3775801D1

公开(公告)日：1992-02-20

申请号：DE3775801

申请日：1987-03-25

Applicant: BASF AG

Inventor： MUELLER NORBERT ,  OHLINGER MANFRED ,  WALTER EGON

IPC: C01G37/027 ,  G11B5/706

Abstract: Ferromagnetic CrO2 (I) is produced by mixing Cr2O3 and CrO3 in water, with addn. of modifier(s) (II), and then heating the mixt. at 240-500 deg. C and 100-700 bar. (II) is added in a predetermined amt. of a dust-tight package, made of material which is soluble or disintegrates in water.

公开(公告)号：DE3610192A1

公开(公告)日：1987-10-01

申请号：DE3610192

申请日：1986-03-26

Applicant: BASF AG

Inventor： MUELLER NORBERT ,  OHLINGER MANFRED ,  WALTER EGON

IPC: C01G37/027 ,  G11B5/706 ,  C01G37/033