-
公开(公告)号：DE3461231D1
公开(公告)日：1986-12-11
申请号：DE3461231
申请日：1984-12-14
Applicant: BASF AG
Inventor： LEHNER AUGUST DIPL ING , KOHL ALBERT , ROLLER HERMANN , BALZ WERNER DR , KOESTER EBERHARD DR , SOMMERMANN FRIEDRICH DR
IPC: C09D5/23 , C09D7/12 , C10M105/24 , C10M105/68 , C10N10/04 , C10N40/18 , G11B5/71
Abstract: Magnetic recording media consisting of a non-magnetic base and, applied thereto, one or more firmly adhering magnetizable layers based on magnetic material finely dispersed in a polymeric binder, at least one lubricant and other conventional additives, wherein the lubricant used is a mixture of zinc stearate which has been rendered hydrophilic and stearylamide.
-
公开(公告)号：DE3341699A1
公开(公告)日：1985-05-30
申请号：DE3341699
申请日：1983-11-18
Applicant: BASF AG
Inventor： LEHNER AUGUST , KOPKE HELMUT , ROLLER HERMANN , BALZ WERNER DR , GRAU WERNER DR , KOESTER EBERHARD DR , SOMMERMANN FRIEDRICH DR
IPC: C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/02 , C09D175/04 , G11B5/702 , H01F10/10 , G11B5/68 , C09D3/72 , C09D3/76 , C09D3/81
Abstract: Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) a high molecular weight thermoplastic linear polyurethane, (2) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer and (3) an OH-containing polyurethane which is crosslinked with polyisocyanates.
-
公开(公告)号：DE3068158D1
公开(公告)日：1984-07-19
申请号：DE3068158
申请日：1980-03-12
Applicant: BASF AG
Inventor： KNELLER ECKHART DR , KOENIG ROLAND DR , KOESTER EBERHARD DR , GRAU WERNER DR , MAYER DIETER DR
IPC: G11B5/66 , G11B5/64 , G11B5/65 , G11B5/706 , G11B5/73 , G11B5/85 , H01F1/20 , H01F10/12 , H01F10/13 , H01F10/16 , H01F41/20
Abstract: A magnetic recording medium comprising a non-magnetic base which is dimensionally stable at up to 300 DEG C., and an 0.03-0.4 mu m thick magnetically hard recording layer of an Sm-Co alloy, vacuum-deposited thereon, which layer possesses uniaxial magnetic anisotropy in the plane of the layer, and a process for the manufacture of this recording medium.
-
公开(公告)号：DE3248327A1
公开(公告)日：1984-06-28
申请号：DE3248327
申请日：1982-12-28
Applicant: BASF AG
Inventor： KOHL ALBERT , BALZ WERNER DR , MELZER MILENA , SCHNEIDER NORBERT , KOESTER EBERHARD DR , LEHNER AUGUST
IPC: C08F20/26 , C08F220/26 , C09D5/23 , C09D133/04 , C09D133/08 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/702 , G11B5/68 , G11B5/84 , B05D5/12 , C09D3/80
Abstract: Magnetic recording media are produced by dispersing finely divided anisotropic magnetic material and conventional additives in a solution of a polymeric binder in an organic solvent, or in an aqueous dispersion of a polymeric binder, adding a polymer based on hydrophilic ethylenically unsaturated compounds to the magnetic dispersion, applying a layer of the dispersion to a non-magnetizable base, orienting the anisotropic magnetic material in a magentic field and drying the applied layer.
-
公开(公告)号：DE2951951A1
公开(公告)日：1981-07-09
申请号：DE2951951
申请日：1979-12-22
Applicant: BASF AG
Inventor： REIMER KARL-JUERGEN , KREIMES NORBERT , KOESTER EBERHARD DR , ANDRIESSEN WILHELMUS , PFEFFERKORN DIETMAR DIPL ING , WAGNER HERBERT DR , WAGNER WERNER DIPL ING DR
IPC: G11B23/04 , G11B23/087 , B65H75/16
Abstract: A cassette system for any type of recording medium in strip or tape form, such as films and magnetic tapes, consists essentially of a housing whose external dimensions match those of a conventional type of cassette, and a protective holder for the recording medium which is wound into at least one roll. The housing and the holder are separate or separable members and can be fitted together. Both are provided with means for inserting the holder into the housing in the correct position, and for introducing the recording medium into the transport apparatus. The housing is provided with opening and closing means. The holder can be designed to be separable from the roll of recording medium. Preferably, the housing is a precision-made article and the holder a low-cost article.
-
Patent Agency Ranking
公开(公告)号：DE2459766A1
公开(公告)日：1976-07-01
申请号：DE2459766
申请日：1974-12-18
Applicant: BASF AG
Inventor： SCHOENAFINGER EDUARD DR , DEIGNER PAUL DR , KOESTER EBERHARD DR , OHLINGER MANFRED DR , SCHAEFER DIETER DR , STUMPFI WERNER DR
Abstract: Chromium dioxide magnetic pigments are stabilised against loss of magnetic properties by (a) treating an alcoholic or aq. alcoholic suspension of the pigment with a hydrolysis prod. of a silane RnSi(CR')4-n where R = 3-18 C aliphatic org. gp., R' = 1-8C aliphatic org. gp. and n=1-3, such that it remains at least partially on the surface of the pigment after separating the pigment from the medium, and (b) drying the treated pigment at ca 50-200 degrees C. gives pigments useful in making magnetic tapes etc. which are resistant to loss of magnetic properties under advers (hot and moist) climatic conditions; gives better protection than known processes in which e.g. a thin chromium oxide layer or an inorg. metal phosphate layer is deposited on the pigment surface. The pigments also have improved dispersibility and processability.
-
-
公开(公告)号：DE3877257D1
公开(公告)日：1993-02-18
申请号：DE3877257
申请日：1988-05-26
Applicant: BASF AG
Inventor： KOESTER EBERHARD DR , KUPPELMAIER HARALD , STEININGER HELMUT DR , WIEGEMANN HANS-BERTRAM DR
Abstract: A flat, multilayer laser optical recording material comprising a dimensionally stable support and a thin, thermally modifiable recording layer consisting of Au and at least one metal chosen from Ru, Rh, Pd, Ag, Cu, Re, Os, Ir and Pt, the recording layer satisfying the following conditions: (a) it completely covers the underlying surface; (b) it contains 15-85 wt% Au w.r.t. the total layer, the Au being in predominantly non-alloyed form in a separate phase; (c) it exhibits a surface granularity with an ave. grain size of 10-200 nm; (d) the ave. layer depth d=5-300 nm where d=(dmin + dmax)/2 in which dmin= the ave. thickness of 10 fo the thinnest positions and dmax = the ave. thickness of 10 of the thickest positions on the recording layer; and (e) it is formed by at least 2-stage coating of the surface alernately with Au and with at least one of the other metals.
-
公开(公告)号：DE3375849D1
公开(公告)日：1988-04-07
申请号：DE3375849
申请日：1983-04-28
Applicant: BASF AG
Inventor： MELZER MILENA , JAKUSCH HELMUT , GRAU WERNER DR , KOESTER EBERHARD DR , LOESER WERNER DR , POLKE REINHARD DR , SCHAEDEL GUENTER DR , OHLINGER MANFRED DR , VAETH GUENTER
Abstract: A magnetic dispersion which can be applied to a non-magnetic base to produce a recording medium is prepared by dispersing a magnetically anisotropic material in a polymer binder and in an organic solvent by a method wherein the magnetically anisotropic material is worked in a jet mill before and/or during dispersing.
-
公开(公告)号：DE3469082D1
公开(公告)日：1988-03-03
申请号：DE3469082
申请日：1984-11-09
Applicant: BASF AG
Inventor： LEHNER AUGUST , KOPKE HELMUT , ROLLER HERMANN , BALZ WERNER DR , GRAU WERNER DR , KOESTER EBERHARD DR , SOMMERMANN FRIEDRICH DR
IPC: C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/02 , C09D175/04 , G11B5/702 , H01F10/10
Abstract: Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) a high molecular weight thermoplastic linear polyurethane, (2) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer and (3) an OH-containing polyurethane which is crosslinked with polyisocyanates.
-
-
-
-
-
-
-
-
-
Search Results
37
records
(took 0.021 seconds)
