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    21.
    发明专利
    未知

    公开(公告)号：DK110486D0

    公开(公告)日：1986-03-11

    申请号：DK110486

    申请日：1986-03-11

    Applicant: BASF AG

    Inventor： HIRSCH GUENTER ,  AUHORN WERNER

    IPC: C08F220/00 ,  C08F220/04 ,  C08F220/10 ,  C08F220/12 ,  C09K23/00 ,  D21H17/37 ,  D21H17/67 ,  D21H17/69 ,  D21H

    Abstract: Aqueous pigment suspensions which are added to the stock suspension during papermaking and contain, as a dispersant, from 0.1 to 2% by weight, based on the pigment, of a copolymer which contains, as copolymerized units, (a) from 40 to 95% by weight of an ester of (meth)acrylic acid with a saturated monohydric C1-C8-alcohol or with a saturated dihydric C2-C4-alcohol and (b) from 60 to 5% by weight of an ethylenically unsaturated C3-C5-carboxylic acid and has a K value of from 10 to 65 (determined according to H. Fikentscher in 1% aqueous solution in the form of the ammonium salt at pH 9 and at 20 DEG C.), their preparation and their use.

    22.
    发明专利
    未知

    公开(公告)号：FI63801C

    公开(公告)日：1983-08-10

    申请号：FI780181

    申请日：1978-01-20

    Applicant: BASF AG

    Inventor： SCHENCK HANS-UWE ,  HIRSCH GUENTER

    IPC: D21H19/44 ,  D21H19/56 ,  D21H19/58 ,  D21H1/28 ,  C08L33/02

    Abstract: An improved paper coating composition containing, per 100 parts by weight of finely divided pigment, from 5 to 25 parts by weight of a copolymer A having a glass transition temperature of from -40 DEG to +50 DEG C. in the form of an aqueous dispersion and from 0.1 to 10 parts by weight of a high molecular weight polymer B which is obtained by polymerizing water-soluble ethylenically unsaturated monomers in a water-in-oil emulsion. Papers having improved water resistance are obtained.

    PAPER-COATING COMPOSITIONS
    23.
    发明专利
    PAPER-COATING COMPOSITIONS 未知

    公开(公告)号：CA1151787A

    公开(公告)日：1983-08-09

    申请号：CA345217

    申请日：1980-02-07

    Applicant: BASF AG

    Inventor： CORDES CLAUS ,  HIRSCH GUENTER ,  HARTMANN HEINRICH

    IPC: D21H19/36 ,  D21H19/50 ,  D21H19/52 ,  D21H19/54 ,  D21H19/58 ,  D21H19/60 ,  C09D3/727 ,  B32B27/10

    Abstract: An improved paper-coating composition containing, per 100 parts by weight of finely divided pigment, from 5 to 25 parts by weight of one or more copolymers, having a glass transition temperature of from -40 to 50.degree.C, in the form of an aqueous dispersion, and from 0.1 to 10 parts by weight of one or more water-soluble or water-swellable co-binders selected from the group comprising polyvinyl alcohol, cellulose ethers and esters, starch, casein, and alignates. The co-binder is added to the paper-coating composition in the form of a water-in-oil emulsion. paper-coating compositions having high water retention are obtained, and papers coated with such compositions have improved water resistance.

    Magnetic tape cassette with visual indicator - has upper cover with transparent areas on common support over reels where tape enters and exits
    25.
    发明专利
    Magnetic tape cassette with visual indicator - has upper cover with transparent areas on common support over reels where tape enters and exits 未知

    公开(公告)号：FR2512254A3

    公开(公告)日：1983-03-04

    申请号：FR8214541

    申请日：1982-08-24

    Applicant: BASF AG

    Inventor： LOHRER EMIL ,  HIRSCH GUENTER ,  WOLF HANS JOACHIM

    IPC: G11B23/087 ,  G11B23/42 ,  G11B23/08

    Abstract: A cassette case (5) has upper (6) and lower (7) covers which are screwed (8) together. Openings (9,10) allow the shafts for the reel hubs (11,12) to enter and engage the drive fingers (13). Over the openings are two identical openings (14a,14b) whose inner ends are curved and with parallel sides to increase progressively the resistance to breaking of the cassette. The openings have transparent covers (16a,16b) and have a common support element. The assembly is fixed into position by welding or gluing. Collets (18) provide support for the reel hubs. The shape of these openings allows inspection of the outer edge of the reels (19,20) in the area (21) where the tape winds on and unwinds from the reel. This allows suppression of any loops which may form near the safety levers (22,23).

    PAPER COATING COMPOSITION
    26.
    发明专利
    PAPER COATING COMPOSITION 未知

    公开(公告)号：CA1107873A

    公开(公告)日：1981-08-25

    申请号：CA294990

    申请日：1978-01-16

    Applicant: BASF AG

    Inventor： SCHENCK HANS U ,  HIRSCH GUENTER

    IPC: D21H19/44 ,  D21H19/56 ,  D21H19/58 ,  C09D3/727

    Abstract: O.Z. 32,398/920 An improved paper coating composition containing, per 100 parts by weight of finely divided pigment, from 5 to 25 parts by weight of a copolymer A having a glass transition temperature of from -40 to +50.degree.C in the form of an aqueous dispersion and from 0.1 to 10 parts by weight of a high molecular weight polymer B which is obtained by polymerizing water-soluble ethylenically unsaturated monomers in a water-in-oil emulsion. Papers having improved water resistance are obtained.

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