公开(公告)号：US3592687A

公开(公告)日：1971-07-13

申请号：US3592687D

申请日：1969-01-06

Applicant: BASF AG

Inventor： SCHNELL GEORG ,  HARTMANN JOB-WERNER ,  STRITZINGER HEINZ ,  SENKPIEL WERNER ,  HARTMANN HANS JOERG ,  SOBOTTA ERICH ALBERT ,  UHL KARL ,  WERST GERHARD

IPC: C09D5/23 ,  G11B5/702 ,  H01F10/02

CPC classification number: G11B5/702 ,  Y10T428/31692

Abstract: A METHOD OF PRODUCING MAGNETIC RECORDING MEDIA BY APPLYING TO A BASE A COATING OF A DISPERSION OF A MAGNETIC PIGMENT, PRETREATED WITH WAX OR WAX-LIKE SUBSTANCES, IN A SPECIAL CURABLE COPLYMER OF ALKENYL BENZENE HYDROCARBONS (METH)ACRYLIC ESTERS, ETHERIFIED N-METHYLAMIDES OF (METH)ACRYLIC ACID AND AN ADDITIONAL COMONOMER, DRYING AND CURING THE APPLIED COATING; AND THE MAGNETIC RECORDING MATERIAL THUS OBTAINED.

公开(公告)号：US3505109A

公开(公告)日：1970-04-07

申请号：US3505109D

申请日：1966-09-27

Applicant: BASF AG

Inventor： SCHNELL GEORG ,  HARTMANN JOB-WERNER ,  STEUERWALD MANFRED ,  KITTLER WOLFRAM

IPC: C09D5/23 ,  G11B5/702 ,  G03G19/00 ,  H01F1/34

CPC classification number: G11B5/702 ,  Y10S428/90 ,  Y10T428/31681

公开(公告)号：US3704152A

公开(公告)日：1972-11-28

申请号：US3704152D

申请日：1970-09-10

Applicant: BASF AG

Inventor： HARTMANN HANS JOERG ,  SCHNELL GEORG ,  WERST GERHARD ,  GROSSELFINGER HORST ,  HARTMANN JOB-WERNER ,  BIPP HANSJOERG

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/71 ,  H01F10/02

CPC classification number: G11B5/71 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31797

Abstract: MAGNETIC RECORDING MEDIA COMPRISING A NON-MAGNETIC SUPPORT AND A MAGNETIC LAYER BASED ON A MAGNETIC PIGMENT DISPERSED IN A BINDER AND CONTAINING A SMALL AMOUNT OF A LIQUID MIXTURE OF BRANCHED FATTY ACIDS HAVING AT LEAST 95% BY WEIGHT OF C12 TO C18 FATTY ACIDS AND AT LEAST 40% BY WEIGHT OF BRANCHED C18 FATTY ACIDS.

公开(公告)号：US3542589A

公开(公告)日：1970-11-24

申请号：US3542589D

申请日：1968-03-27

Applicant: BASF AG

Inventor： HARTMANN JOB-WERNER ,  SCHNELL GEORG ,  SCHMIDT ERWIN ,  GRESS FRIEDRICH

IPC: G11B5/71 ,  G11B5/725 ,  H01F10/02

CPC classification number: G11B5/71 ,  G11B5/725 ,  Y10T428/31736 ,  Y10T428/31765 ,  Y10T428/31786

公开(公告)号：CA793255A

公开(公告)日：1968-08-27

申请号：CA793255D

Applicant: BASF AG

Inventor： SENKPIEL WERNER ,  SCHNELL GEORG ,  WERST GERHARD ,  UHL KARL ,  BECHT GUENTER ,  WILHELM HANS ,  WAGNER HERBERT ,  HARTMANN JOB-WERNER

公开(公告)号：FR1428393A

公开(公告)日：1966-02-11

申请号：FR8979

申请日：1965-03-12

Applicant: BASF AG

Inventor： NAARMANN HERBERT ,  KASTNING ERNST GUENTHER ,  SCHNELL GEORG

IPC: C08F2/00 ,  C08F10/00 ,  C08F210/00

公开(公告)号：AU4032272A

公开(公告)日：1973-09-27

申请号：AU4032272

申请日：1972-03-23

Applicant: BASF AG

Inventor： SCHAEFFER NORBERT ,  FITTERER HORST ,  UHL KARL ,  SCHNELL GEORG ,  ANDRIESSEN WILHELMUS

IPC: G11B15/60 ,  G11B20060101 ,  G11B15/00 ,  G11B15/26 ,  G11B23/04 ,  G11B23/08 ,  G11B23/087 ,  G11B15/66

Abstract: Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools, the guide elements being movable in the plane of rotation of the packs. At least part of the guide elements is located between the pack and the outermost winding and thus constantly guides the tape as it is wound or unwound, resulting in optimal tape guidance and consequently in a stable and accurate winding on the spool.

公开(公告)号：GB1150947A

公开(公告)日：1969-05-07

申请号：GB4098466

申请日：1966-09-14

Applicant: BASF AG

Inventor： WILHELM HANS ,  BECHT GUENTER ,  HENKLER HERBERT ,  SCHNELL GEORG ,  HARTMANN JOB-WERNER

IPC: C09D5/23 ,  G11B5/702

Abstract: 1,150,947. Magnetic compositions. BADISCHE ANILIN- & SODA-FABRIK A.G. 14 Sept., 1966 [15 Sept., 1965], No. 40984/66. Heading H1H. In the production of magnetic recording media by applying a suspension of ferromagnetic powder in a solution of a binder on to a backing, the binder comprises a mixture of a polyamide and a monomer having at least two double bonds, which is polymerized in situ by irradiation, heat, or ozone. The monomer is preferably acrylic, and may be N,N 1 -methylene, ethylene, trimethylene, hexamethylene, or p,p-diaminocyclohexylmethane, -bis-acrylamide or -methacrylamide; or an acrylate or methacrylate of glycol, propylene glycol, butanediol, pentanediol, hexanediol, glycerol, trimethylol propane, pentaerythritol, or cyclic polyols. Suitable polyamides, solvents, initiators, plasticizers, and bases are listed. Polymerization may be effected (before, during, or after drying) with I.R., visible, or U.V. radiation, heated rollers, dryers, α, #, or γ rays, passage of O 3 produced by electric discharge. Monomers having one double bond may also be incorporated with the binder. The wt. ratio of powder: binder may be 2: 1 to 6: 1, and the powder may be Fe 3 O 4 , acicular γ- Fe 2 O 3 , or Fe.

公开(公告)号：FR1432142A

公开(公告)日：1966-03-18

申请号：FR14384

申请日：1965-04-23

Applicant: BASF AG

Inventor： STEDEFEDER JOACHIM ,  SCHNELL GEORG

IPC: C08F10/04

公开(公告)号：YU36077B

公开(公告)日：1981-11-13

申请号：YU80372

申请日：1972-03-27

Applicant: BASF AG

Inventor： NORBERT SCHAEFFER ,  SCHAEFFER NORBERT ,  HORST FITTERER ,  FITTERER HORST ,  KARL UHL ,  UHL KARL ,  GEORG SCHNELL ,  SCHNELL GEORG ,  WILHELMUS ANDRIESSEN ,  ANDRIESSEN WILHELMUS

IPC: G11B15/60 ,  G11B20060101 ,  G11B15/00 ,  G11B15/26 ,  G11B23/04 ,  G11B23/08