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公开(公告)号：JPS53141604A
公开(公告)日：1978-12-09
申请号：JP5670078
申请日：1978-05-15
Applicant: BASF AG
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公开(公告)号：DE2722078B2
公开(公告)日：1979-10-31
申请号：DE2722078
申请日：1977-05-16
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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公开(公告)号：NL7804420A
公开(公告)日：1978-11-20
申请号：NL7804420
申请日：1978-04-25
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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公开(公告)号：DE2646348A1
公开(公告)日：1978-04-20
申请号：DE2646348
申请日：1976-10-14
Applicant: BASF AG
Inventor： STECK WERNER DIPL CHEM DR , SCHNEEHAGE HANS HEINNING DIPL , JAECKH CHRISTOF DIPL CHEM DR , HUEBNER WERNER DIPL ING , OHLINGER MANFRED DIPL CHEM DR , LOESER WERNER DIPL ING DR
Abstract: A method of preparing acicular ferromagnetic metal particles consisting essentially of iron and suitable for magnetic recording, said particles being modified at the surface with 0.02 to 0.2% by weight of carbon and with 0.5 to 1.9% by weight of phosphorus as phosphate, by reducing a finely divided acicular iron compound, wherein there are deposited on said iron compound, prior to reduction, (a) a hydrolysis-resistant substance selected from the group consisting of oxyacids of phosphorus, their esters and inorganic salts, and (b) a compound selected from the group consisting of aliphatic monobasic, dibasic and tribasic carboxylic acids of from 1 to 6 carbon atoms.
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公开(公告)号：DE2722078C3
公开(公告)日：1980-07-10
申请号：DE2722078
申请日：1977-05-16
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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Patent Agency Ranking
公开(公告)号：FR2391526A1
公开(公告)日：1978-12-15
申请号：FR7814420
申请日：1978-05-16
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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公开(公告)号：DE2722078A1
公开(公告)日：1978-11-23
申请号：DE2722078
申请日：1977-05-16
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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公开(公告)号：DE2451232A1
公开(公告)日：1976-05-06
申请号：DE2451232
申请日：1974-10-29
Applicant: BASF AG
Inventor： WUNSCH GERD DIPL CHEM DR , FEHRENBACH HUBERT ING GRAD , LOESER WERNER DIPL ING DR , HUEBNER WERNER DIPL ING , FELLEISEN PETER DIPL ING , STECK WERNER DIPL CHEM DR
Abstract: In the prodn. of rigid magnetic recording supports by depositing a thin Co-contg. ferro-magnetic metal film (I) on an anodised Al disc as substrate, opt. after depositing a non-magnetic intermediate metal coating (II), and providing the surface of (I) with a thin protective coating (III), the anodised Al disc is activated by treatment with a soln. of Pd(O) complex in an organic solvent and the complex is decomposed, pref. by heating, then (I) is deposited by electroless and then opt. electro-plating. Activation eliminates the need for (II) and discs with very good electromagnetic and the mechanical properties in use and good corrosion resistance are obtd. (I) is deposited directly on the activated surface. The metal-coatd disc is tempered under an inert gas at 150-300 degrees C. (III) is applied using a soln. of a film-forming organic lacquer binder in a volatile solvent to give a dry unbaked film thickness of max. 0.3 mu m, then the coating is dried and baked in an O2-contg. atmos. for 1-15 h at 200-300 degrees C.
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公开(公告)号：NL181608C
公开(公告)日：1987-09-16
申请号：NL7804420
申请日：1978-04-25
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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公开(公告)号：GB1599712A
公开(公告)日：1981-10-07
申请号：GB1956278
申请日：1978-05-15
Applicant: BASF AG
Inventor： HUEBNER WERNER DIPL ING , HARTMANN JOB-WERNER DIPL CHEM , DOMAS FRIEDRICH DIPL ING , NAGEL PETER DIPL ING , DEIGNER PAUL DR , KOESTER EBERHARD DIPL PHYS DR , HAUSER HANS
Abstract: A process and apparatus for the manufacture of magnetic recording media, in which, immediately before the magnetic dispersion is applied to a base, the dispersion is subjected to shear by means of a disc rotatably mounted in a housing, by introducing it at the center of rotation of the disc and forcing it through a gap formed between the face of the disc and the wall of the housing, which gap tapers toward the rim of the disc.
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