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：US3922439A

公开(公告)日：1975-11-25

申请号：US30667472

申请日：1972-11-15

Applicant: BASF AG

Inventor： HARTMANN HANS-JOERG ,  HARTMANN JOB-WERNER ,  FRISCHMAN HARALD ,  VAETH GUENTER

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

CPC classification number: G11B5/7022 ,  Y10S428/90 ,  Y10T428/31565 ,  Y10T428/31576 ,  Y10T428/31609

Abstract: Magnetic recording media comprising a non-magnetic support and a magnetic layer based on a dispersion of finely divided magnetic pigment in a binder consisting of a mixture of a special soluble hydroxyl-free polyester urethane.

Abstract translation: 磁性记录介质包括非磁性载体和磁性层，该磁性层基于由特殊的可溶解的无羟基聚酯聚氨酯的混合物组成的粘合剂中的细分散的磁性颜料的分散体。

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：CA881449A

公开(公告)日：1971-09-21

申请号：CA881449D

Applicant: BASF AG

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

公开(公告)号：FR1486213A

公开(公告)日：1967-06-23

申请号：FR68752

申请日：1966-07-08

Applicant: BASF AG

Inventor： FLORUS GERHARD ,  MARX MATTHIAS ,  HARTMANN JOB-WERNER ,  WILHELM HANS

IPC: C09D5/44 ,  C09D133/06

公开(公告)号：FR1485140A

公开(公告)日：1967-06-16

申请号：FR67441

申请日：1966-06-29

Applicant: BASF AG

Inventor： FLORUS GERHARD ,  MARX MATTHIAS ,  HARTMANN JOB-WERNER ,  WILHELM HANS

IPC: C08L61/04 ,  C09D5/44 ,  C09D133/06

公开(公告)号：FR1475382A

公开(公告)日：1967-03-31

申请号：FR57126

申请日：1966-04-08

Applicant: BASF AG

Inventor： WILHELM HANS ,  MARX MATTHIAS ,  BRUNNMUELLER FRIEDRICH ,  ALLWINN ROLAND ,  VLACHOS ACHILLES ,  SANDER HANS ,  HARTMANN JOB-WERNER ,  BACHMANN RUDOLF

IPC: C08F20/58 ,  C08F20/62 ,  C08F22/00

公开(公告)号：GB2000295B

公开(公告)日：1982-03-10

申请号：GB7826625

申请日：1978-06-09

Applicant: BASF AG

Inventor： HAMMON FRITZ ,  OHLINGER MANFRED ,  HARTMANN JOB-WERNER

IPC: G01R33/00 ,  G01N27/72 ,  G01N27/74 ,  G01R33/12 ,  G11B5/84 ,  G11B5/845

Abstract: In order to determine the homogeneity of a magnetic dispersion, part of the dispersion is conducted through a measuring cell prior to its application to a base, the size, number and type of those regions of the magnetic dispersion which interfere with the homogeneity being determined with the aid of magnetic measurements. The measuring cell contains a magnetic head, a magnetic dispersion is made to flow in a stream of constant cross section past the air gap of the magnetic head, and a magnetic field at least partially penetrating the magnetic dispersion is produced. From the characteristics of the amplified output voltage of the magnetic head the various parameters of the inhomogeneities in the magnetic dispersion can then be ascertained.