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    161.
    发明专利
    未知

    公开(公告)号：DE3701716C3

    公开(公告)日：1996-06-20

    申请号：DE3701716

    申请日：1987-01-22

    Applicant: BASF MAGNETICS GMBH

    Inventor： SCHOLTYSIK BERND DR ING DR ,  BIRKMANN JOSEF

    IPC: B26D1/24 ,  B26D7/26

    Abstract: A cutting device for layered or unlayered foil lengths, having good cut quality and an extended period of use before re-grinding of the cutter is required, consists of cylindrically shaped keyway cutter bars with distance rings lying between them, which are mounted on a blade shaft, and of roller blades of right-angles cross-section, which are equally mounted on a blade shaft and wherein each roller blade is pressed by a spring washer against the corresponding keyway cutter bar. The advantage according to the invention consists in that first each roller blade is supported on one of the cutting blades of the keyway cutter bar and that after these cutting shoulders wear off the whole roller blade shaft is turned around and in each case the other cutting shoulder is used for cutting. After these cutting shoulders too have worn off the cutting device is made usuable for further cutting operation by grinding off the cylindrical outer surface of the keyway cutter bars (FIG. 2).

    163.
    发明专利
    未知

    公开(公告)号：DE59205718D1

    公开(公告)日：1996-04-25

    申请号：DE59205718

    申请日：1992-03-06

    Applicant: BASF MAGNETICS GMBH

    Inventor： BAARFUESSER JOHANN

    IPC: G11B5/84

    Abstract: An improved calender apparatus for compressing and magnetic recording coating applied thereto, comprises a central roll (1) having a hard surface, around which the magnetic web is wrapped so that one side of the web bears against the central roll, while bearing against the other side of the web are at least three supporting rolls (2) which are distributed evenly around the central roll. With support roll can being rolls linearly displaced, the central roll can be swung out by a jointed lever and the web completely unthreaded. As a result, with two calender apparatuses arranged in series, cleaning of one apparatus is possible while production is not interrupted. The radius of the central roll is less than the radius of the supporting rolls, resulting in a higher linear pressure; in addition, the central roll may be made or mounted in such a way that it is flexible, in order to compensate in this way for unevennesses of the supporting rolls or of the coating.

    167.
    发明专利
    未知

    公开(公告)号：DE59106529D1

    公开(公告)日：1995-10-26

    申请号：DE59106529

    申请日：1991-10-19

    Applicant: BASF MAGNETICS GMBH

    Inventor： SCHROER WOLF-DIETER DR ,  VASS ATTILA DR ,  SAUTER JUERGEN ,  SCHMIDT JUERGEN ,  KUNTZ GUENTHER

    IPC: G11B5/708 ,  C09D5/23 ,  G11B5/70 ,  G11B5/702 ,  G11B5/712 ,  G11B5/714 ,  G11B5/73 ,  G11B5/842

    Abstract: A magnetic dispersion, consisting of fine particles of iron powder or iron alloy powder having a BET value of more than 35 m /g, which powder is dispersed in a polymeric binder and an organic solvent and has markedly improved filterability, is obtained by using certain low-molecular phosphoric acid esters of the general formula I or II in combination with a dispersion-active compound which contains at least one polar group capable of absorption on the magnetic pigment. The polar group of the dispersion-active compound can be an acidic or alkaline or amphoteric group, a group which is capable of forming hydrogen bonds, or a polarisable group. The dispersion-active compound can be a polycondensate, a polyaddition product or a copolymer, which can also be used in the magnetic dispersion in combination with other conventional polymeric binders.

    169.
    发明专利
    未知

    公开(公告)号：DE4407622A1

    公开(公告)日：1995-09-14

    申请号：DE4407622

    申请日：1994-03-08

    Applicant: BASF MAGNETICS GMBH

    Inventor： STEININGER HELMUT DR ,  HEILMANN PETER DR ,  ARTLEY RICHARD DR ,  GREEN ALAN DR

    IPC: G03F1/12 ,  G03C1/52 ,  G03C5/60

    Abstract: In order to improve contrast in diazofilms, the diazo compounds in the light-sensitive layer which are to be activated by exposure for colour formation are supplemented by diazo compounds in the case of which nitrogen remaining at the exposed locations and bubbles causing light scatter are produced after the action of light followed immediately by a heat treatment.

    Materials suitable as crosslinkable binder components
    170.
    发明专利
    Materials suitable as crosslinkable binder components 未知

    公开(公告)号：GB2286192A

    公开(公告)日：1995-08-09

    申请号：GB9500515

    申请日：1995-01-11

    Applicant: BASF MAGNETICS GMBH

    Inventor： BRODT GREGOR ,  WUENSCH THOMAS ,  LEHNER AUGUST ,  KOHL ALBERT

    IPC: C08G18/12 ,  C08G18/65 ,  C09D5/23 ,  G11B5/702 ,  C08G18/66

    Abstract: A material (I) suitable as crosslinkable binder component for pigment-containing coatings and having an average molecular weight of from 25,000 to 150,000 is obtainable by reacting (1) a polyurethane (II) comprising a) 1 mol of a diol (III) having an average molecular weight of from 400 to 4,000, b) from 0.1 to 10 mol of an aliphatic or cycloaliphatic diol (IV) of 2 to 18 carbon atoms, c) from 0.01 to 10 mol of an aromatic diol (V) of 8 to 36 carbon atoms, d) from 0.01 to 2 mol of a trihydric or polyhydric alcohol (VI) of 3 to 18 carbon atoms, e) from 0.01 to 8 mol of a polyhydric alcohol (VII) of 3 to 40 carbon atoms which contains a tertiary amino group and f) an amount of a diisocyanate (VIII) of 6 to 34 carbon atoms such that the molar ratio of isocyanate groups to the total number of hydroxyl groups in (III) to (VII) is from 1.05:1 to 1.4:1, with (2) a compound (IX) which contains one or more hydroxyl groups and one or more amino groups reactive towards isocyanate groups, the amount of (IX) being such that the number of reactive amino groups corresponds to the number of isocyanate groups in the polyurethane (II). The materials may be used as crosslinkable binder components for pigment-containing coatings, in particular for the production of magnetic recording materials.

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