21.
    发明专利
    未知

    公开(公告)号:NO970848L

    公开(公告)日:1997-02-25

    申请号:NO970848

    申请日:1997-02-25

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03230 Sec. 371 Date Feb. 18, 1997 Sec. 102(e) Date Feb. 18, 1997 PCT Filed Aug. 16, 1995 PCT Pub. No. WO96/06891 PCT Pub. Date Mar. 7, 1996 gamma -Fe2O3 pigments and Fe3O4 pigments with a particle diameter of 2 to 100 nm, a saturation magnetization above 40 nTm3/g, a remanence below 10 nTm3/g, a Cr content below 40 mg/kg of pigment, a Cu content below 40 mg/kg of pigment and C content below 100 mg/kg of pigment and aqueous suspension of these pigments. The pigments are used in aqueous suspension in the medical sector, in particular as contrast agents in magnetic resonance imaging.

    22.
    发明专利
    未知

    公开(公告)号:DE3940347C2

    公开(公告)日:1997-02-20

    申请号:DE3940347

    申请日:1989-12-06

    Applicant: BASF AG

    Abstract: Iron whiskers are produced by thermal decomposition of iron pentacarbonyl vapor in an indirectly heated empty-space decomposer in which the cross-sectional area for entry of the iron pentacarbonyl into the empty-space decomposer is from 10 to 40% of the cross-sectional area of the empty-space decomposer, the mass flow density of the iron pentacarbonyl vapor, based on the cross-sectional area of the decomposer, is from 0.01 to 0.07 kg per square meter per second, and the temperature in the empty-space decomposer should at no point be below 360 DEG C.

    High purity ferromagnetic iron oxide pigments

    公开(公告)号:AU3383995A

    公开(公告)日:1996-03-22

    申请号:AU3383995

    申请日:1995-08-16

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03230 Sec. 371 Date Feb. 18, 1997 Sec. 102(e) Date Feb. 18, 1997 PCT Filed Aug. 16, 1995 PCT Pub. No. WO96/06891 PCT Pub. Date Mar. 7, 1996 gamma -Fe2O3 pigments and Fe3O4 pigments with a particle diameter of 2 to 100 nm, a saturation magnetization above 40 nTm3/g, a remanence below 10 nTm3/g, a Cr content below 40 mg/kg of pigment, a Cu content below 40 mg/kg of pigment and C content below 100 mg/kg of pigment and aqueous suspension of these pigments. The pigments are used in aqueous suspension in the medical sector, in particular as contrast agents in magnetic resonance imaging.

    26.
    发明专利
    未知

    公开(公告)号:DE59909297D1

    公开(公告)日:2004-06-03

    申请号:DE59909297

    申请日:1999-07-26

    Applicant: BASF AG

    Abstract: A process for the production of carbonyl-iron-silicide involves heating a mixture containing (a) 20-99.9 wt% finely-divided carbonyl-iron and (b) 0.1-80 wt% finely divided silicon powder. An Independent claim is also included for carbonyl-iron-silicide obtained by this process.

    27.
    发明专利
    未知

    公开(公告)号:AT225690T

    公开(公告)日:2002-10-15

    申请号:AT98102811

    申请日:1998-02-18

    Applicant: BASF AG

    Abstract: A process for producing finely divided phosphorus-containing iron involves gaseous phase reaction of iron pentacarbonyl with a phosphorus compound, preferably phosphine. Preferably, the reaction is carried out in the presence of ammonia at above 200 degrees C. Also claimed is a finely divided phosphorus-containing iron which consists of spherical particles with 1-10 mu mean particle diameter or of filament aggregates of spheres with 0.2-3 mu diameter. Preferably, the iron contains 0.1-50 wt.% P, less than 1 wt.% C, less than 1 wt.% N, less than 0.5 wt.% H and less than 0.1 wt.% total of other impurity elements and is produced by the above process. Further claimed is apparatus for carrying out the above process, including a heated decomposition tube, devices for producing two different temperature zones, for evaporating liquid iron pentacarbonyl and for gas dosing and mixing, and a separator for finely divided phosphorus-containing iron.

    28.
    发明专利
    未知

    公开(公告)号:DE59800678D1

    公开(公告)日:2001-06-13

    申请号:DE59800678

    申请日:1998-02-17

    Applicant: BASF AG

    Abstract: A process for producing phosphorus-containing iron powder involves heating a mixture of finely divided carbonyl iron and elemental phosphorus and pulverising the product. Preferably, a mixture of 70-99 wt.% finely divided carbonyl iron powder and 1-30 wt.% red phosphorus is heated at above 300 degrees C in an inert gas atmosphere. Also claimed is a phosphorus-containing iron powder of less than 10 mu mean particle diameter, containing 0.1-80 wt.% P, less than 1 wt.% C, less than 1 wt.% N, less than 0.5 wt.% H and less than 0.1 wt.% total of other impurity elements except oxygen.

    30.
    发明专利
    未知

    公开(公告)号:DE19706525A1

    公开(公告)日:1998-08-20

    申请号:DE19706525

    申请日:1997-02-19

    Applicant: BASF AG

    Abstract: A process for producing phosphorus-containing iron powder involves heating a mixture of finely divided carbonyl iron and elemental phosphorus and pulverising the product. Preferably, a mixture of 70-99 wt.% finely divided carbonyl iron powder and 1-30 wt.% red phosphorus is heated at above 300 degrees C in an inert gas atmosphere. Also claimed is a phosphorus-containing iron powder of less than 10 mu mean particle diameter, containing 0.1-80 wt.% P, less than 1 wt.% C, less than 1 wt.% N, less than 0.5 wt.% H and less than 0.1 wt.% total of other impurity elements except oxygen.

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