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公开(公告)号:DE3678335D1
公开(公告)日:1991-05-02
申请号:DE3678335
申请日:1986-05-15
Applicant: BASF AG
Inventor: HIBST HARTMUT DR , RUDOLF PETER DR , JAKUSCH HELMUT DR
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公开(公告)号:DE3918582A1
公开(公告)日:1990-12-13
申请号:DE3918582
申请日:1989-06-07
Applicant: BASF AG
Inventor: HARTH KLAUS DR , HIBST HARTMUT DR , SONNBERGER RALF DR , STEININGER HELMUT DR
IPC: C01B21/072 , C23C14/06
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公开(公告)号:DE3842635A1
公开(公告)日:1990-06-21
申请号:DE3842635
申请日:1988-12-17
Applicant: BASF AG
Inventor: HIBST HARTMUT DR , WERNER AREND DR , HACK JOACHIM , MANNSPERGER HEINRICH DR , HITZFELD MICHAEL DR , GRAU WERNER DR , HEIL GUENTER DR , HOLL NORBERT
IPC: G11B23/03 , C10M105/34 , C10N20/06 , C10N40/18 , G11B5/64 , G11B5/66 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/84 , G11B23/033
Abstract: The invention relates to magnetic recording media in disc form, essentially composed of a flexible base material, a ferromagnetic thin metal layer applied on at least one side, and a protective and gliding layer, essentially composed of carbon, located on this metal layer, a process for producing these recording media and information memory containing these recording media.
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公开(公告)号:DE3726464A1
公开(公告)日:1989-02-16
申请号:DE3726464
申请日:1987-08-08
Applicant: BASF AG
Inventor: WERNER AREND DR , HIBST HARTMUT DR , HAEDICKE ERICH DR , KRONENBITTER JOHANN DR
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公开(公告)号:DE3273566D1
公开(公告)日:1986-11-06
申请号:DE3273566
申请日:1982-07-16
Applicant: BASF AG
Inventor: HIBST HARTMUT DR , KULLMANN UDO DR
Abstract: A process for the preparation of finely divided ferrites of the general formula MeFe2O4(I) where Me=aMn+bNi+cZn+dCo+eFe(II), and the atomic weight ratios a, b, c, d and e are each from 0 to 1 and their sum is 1, or M21Me21Fe12O22(II) where M1 is barium, strontium, calcium and/or lead, and Me1 is divalent manganese, copper, iron, cobalt, nickel, zinc, magnesium and/or equimolar amounts of lithium and trivalent iron, or M2(Me2Ti)xFe12-2xO19(III) where M2 is barium or strontium, Me2 is zinc, nickel and/or cobalt and x is from 0 to 1.5, wherein the aqueous solutions of the salts required for the particular composition are reacted with an aqueous solution of sodium carbonate and/or potassium carbonate, the water is removed, the dry salt mixture is heated at from 800 DEG to 1200 DEG C., and the resulting finely divided ferrite of the predetermined composition is isolated by leaching with water.
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公开(公告)号:DE3437657A1
公开(公告)日:1986-04-17
申请号:DE3437657
申请日:1984-10-13
Applicant: BASF AG
Inventor: WERNER AREND DR , HIBST HARTMUT DR , SCHOMANN KLAUS DIETER DR
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公开(公告)号:DE3435698A1
公开(公告)日:1986-04-03
申请号:DE3435698
申请日:1984-09-28
Applicant: BASF AG
Inventor: HIBST HARTMUT DR
IPC: C01G3/00 , C01G9/00 , C01G45/00 , C01G49/00 , C01G51/00 , C01G53/00 , C04B35/26 , C08K3/22 , C08K3/24 , C09C1/00 , C09C1/22 , C09C1/24 , C09D5/23 , G11B5/706 , H01F1/117 , H01F1/36 , H01F1/37 , H01F1/44 , C01G49/02 , G11B5/84 , C09D11/00
Abstract: A process for the preparation of ferrite powders which have a particle fineness which can be set to a defined value, of the general composition M(II)xFe(II)1-xFe(III)2O4 and M(II)xFe(III)3-xO4.5-0.5x where M is Mg, Mn, Co, Ni, Cu and/or Zn and x is from 0 to 1, and have an essentially isotropic particle shape.
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公开(公告)号:DE3342218A1
公开(公告)日:1984-06-20
申请号:DE3342218
申请日:1983-11-23
Applicant: BASF AG
Inventor: WISSEROTH KARL DR , HIBST HARTMUT DR
IPC: H01F1/113
Abstract: A permanent magnet is composed of finely divided magnetic material and a binder which holds it together and is water-soluble.
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公开(公告)号:ES2133599T3
公开(公告)日:1999-09-16
申请号:ES95101967
申请日:1995-02-14
Applicant: BASF AG
Inventor: TENTEN ANDREAS DR , MARTIN FRIEDRICH-GEORG DR , HIBST HARTMUT DR , MAROSI LASZLO DR , KOHL VERONIKA DR
IPC: C01G53/00 , B01J23/00 , B01J23/88 , B01J23/885 , B01J23/887 , B01J27/199 , B01J35/00 , C01G39/02 , C07B61/00 , C07C51/25 , C07C57/055
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公开(公告)号:DE59505873D1
公开(公告)日:1999-06-17
申请号:DE59505873
申请日:1995-02-09
Applicant: BASF AG
Inventor: MARTIN FRIEDRICH-GEORG DR , HIBST HARTMUT DR , TENTEN ANDREAS DR
IPC: C01G1/00 , B01J23/88 , B01J23/885 , B01J27/14 , B01J27/195 , B01J27/199 , B01J35/00 , C01G1/02 , C01G39/00 , C07B61/00 , C07C51/25 , C07C57/055
Abstract: Multimetal oxide compsn. of formula (I) is new: (A)p(B)q(I): A = Mo12X aX bX cX dSeX fO x; B = X 12CugX hOy; X = P, As, B, Ge and/or Si; X = V, Nb and/or W; X = H, up to 97 mole-% of which may be replaced by K, Rb, Cs and/or NH4; X = Sb and/or Bi; X = Re and/or Rh; X = Mp, W, Nb and/or Ta; X = Li, Na, K, Rb, Cs and/or NH4; a = 1-6; b, d = 0-6; c = 3-5; e, f = 0-3; g = 4-24; h = 0-20; x, y = values depending on the valency and content of elements other than O; p, q = values other than O, with the ratio p/q = 12:0.1 to 12:48. The A and B fractions are each in the form of 3D zones, which differ in chemical compsn. from their local surroundings, and the relative distribution of the A and B zones is as in a mixt. of finely-divided A and finely-divided B.
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