公开(公告)号：DE3801455A1

公开(公告)日：1989-08-03

申请号：DE3801455

申请日：1988-01-20

Applicant: BASF AG

Inventor： STOCKBURGER DIETER DR ,  FESER RAINER DR ,  GRAMMATIS ZAFIRIOS DR ,  MUELLER NORBERT DR ,  OHLINGER MANFRED DR ,  REINICKE HELMUT DR ,  SARTOR KARL-HEINZ ,  SCHLINDWEIN HEINZ ,  STECK WERNER DR

IPC: C01G37/02 ,  C01G37/027

公开(公告)号：DE3375978D1

公开(公告)日：1988-04-21

申请号：DE3375978

申请日：1983-08-04

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  RUDOLF PETER DR ,  NEUBAUER GERALD DR ,  OHLINGER MANFRED DR ,  WILFINGER HANS JOERG DR ,  PFANNEBECKER EMIL ,  DUFFNER PAUL DR

IPC: B01J23/74 ,  B01J23/745 ,  B01J37/00 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C211/09 ,  C07C85/12

公开(公告)号：DE3627133A1

公开(公告)日：1988-02-11

申请号：DE3627133

申请日：1986-08-09

Applicant: BASF AG

Inventor： RUDOLF PETER DR ,  VAETH GUENTER ,  OHLINGER MANFRED DR

IPC: C01G49/06 ,  G11B5/706 ,  C01G49/02 ,  C01G1/02

公开(公告)号：DE3515085A1

公开(公告)日：1986-10-30

申请号：DE3515085

申请日：1985-04-26

Applicant: BASF AG

Inventor： OHLINGER MANFRED DR ,  VAETH GUENTER ,  HONECKER GERHARD

IPC: C01G49/06 ,  C21B13/08 ,  F27B7/32 ,  G11B5/706 ,  H01F1/11 ,  B05D5/12 ,  G11B5/84

公开(公告)号：DE3513723A1

公开(公告)日：1986-10-23

申请号：DE3513723

申请日：1985-04-17

Applicant: BASF AG

Inventor： OHLINGER MANFRED DR ,  MUELLER NORBERT DR ,  RUDOLF PETER DR ,  WETTSTEIN EUGEN

IPC: H01F1/11 ,  C01G37/027 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  C01G37/00 ,  C04B35/12

Abstract: Ferromagnetic chromium dioxide is prepared by converting oxides of trivalent and hexavalent chromium under superatmospheric pressure and at elevated temperatures in the presence of water and with the addition of an antimony compound as a modifier and, if required, further additives in an amount of not more than 15% by weight, by a method in which the antimony compound is present in the form of a water-soluble salt whose anion contains one or more organic molecular moieties which are oxidized in concentrated chromic acid.

公开(公告)号：DE3361565D1

公开(公告)日：1986-01-30

申请号：DE3361565

申请日：1983-08-04

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  RUDOLF PETER DR ,  NEUBAUER GERALD DR ,  DUFFNER PAUL DR ,  OHLINGER MANFRED DR ,  WILFINGER HANS JEORG DR ,  PFANNEBECKER EMIL

IPC: C07B61/00 ,  B01J23/00 ,  B01J23/74 ,  B01J23/745 ,  C07C67/00 ,  C07C209/00 ,  C07C209/48 ,  C07C211/03 ,  C07C211/09 ,  C07C85/12 ,  C07C87/14

Abstract: Saturated primary amines are prepared by reacting a nitrile with hydrogen at elevated temperature under superatmospheric pressure in the presence of ammonia and a metallic iron catalyst which has been obtained by reducing anisometric iron oxide particles with hydrogen at not more than 500 DEG C.

公开(公告)号：DE3420466A1

公开(公告)日：1985-12-05

申请号：DE3420466

申请日：1984-06-01

Applicant: BASF AG

Inventor： VAETH GUENTER ,  HEINZ ROBERT ,  OHLINGER MANFRED DR ,  RUDOLF PETER DR ,  HOFMANN FRIEDBERT DR ,  MELZER MILENA

IPC: G11B5/84 ,  H01F41/16

公开(公告)号：DE3408000A1

公开(公告)日：1985-09-12

申请号：DE3408000

申请日：1984-03-03

Applicant: BASF AG

Inventor： GRAU WERNER DR ,  JAKUSCH HELMUT DR ,  KOVACS JENOE DR ,  OHLINGER MANFRED DR ,  RUDOLF PETER DR ,  ROLLER HERMANN

IPC: G11B5/708 ,  G11B5/70 ,  G11B5/72

Abstract: The invention relates to magnetic recording carriers which comprise a non-magnetic carrier material and a magnetic coating adhesively applied thereupon and composed of fine-particled ferromagnetic metal powder, at least one unmagnetic wear-resistant metal oxide powder, which has a spherical form and is defined in terms of its size distribution and the quantitative proportion thereof, organic binder and the usual auxiliaries.

公开(公告)号：DE3065058D1

公开(公告)日：1983-11-03

申请号：DE3065058

申请日：1980-08-21

Applicant: BASF AG

Inventor： STECK WERNER DR ,  SARNECKI WILHELM DR ,  MAROSI LASZLO DR ,  OHLINGER MANFRED DR ,  LOESER WERNER DR

IPC: G11B5/706 ,  B22F9/22 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  H01F1/06

Abstract: A process for the manufacture of acicular ferromagnetic iron particles by heating a goethite, provided with a shape-stabilizing surface coating, at 250 DEG -450 DEG C. in an atmosphere containing water vapor at a partial pressure of not less than 30 mbar, to give alpha-iron(III) oxide, and reducing this material with hydrogen at 275 DEG -425 DEG C., and the use of the iron particles thus obtained as magnetic material in the production of magnetic recording media.

公开(公告)号：DE2456960A1

公开(公告)日：1976-06-16

申请号：DE2456960

申请日：1974-12-03

Applicant: BASF AG

Inventor： HAMMON FRITZ ,  OHLINGER MANFRED DR ,  STRITZINGER HEINZ DIPL ING ,  HARTMANN JOB-WERNER DR

IPC: G11B5/716 ,  G11B5/70 ,  H01F10/00

Abstract: A laminated magnetogram carrier, consisting of a substrate with >=2 magnetic layers contg. an acicular magnetic material in an organic binder system, has a toper layer contg. a magnetic pigment with a high static signal-to-noise voltage ratio (S/N) pref. over 61.0 dB whilst the S/N is lower pref. below 61.0 dB for the pigment in the lower layer the coercivity of the materials differing by a max. of +10%. Flexible magnetogram carriers satisfying high requirements w.r.t. static noise are obtd. without the exclusive use of pigments with the required S/N value.