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    Materials suitable as crosslinkable binder components
    32.
    发明专利
    Materials suitable as crosslinkable binder components 未知

    公开(公告)号：GB2286192B

    公开(公告)日：1998-04-29

    申请号：GB9500515

    申请日：1995-01-11

    Applicant: BASF MAGNETICS GMBH ,  EMTEC 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 suitable as crosslinking binder component for pigment-containing coatings and having an average molecular weight of from 25,000 to 150,000, obtainable by reacting a polyurethane comprising a diol having a molecular weight between 400 and 4,000, an aliphatic or cycloaliphatic diol of 2-18 carbon atoms, an aromatic diol of 8-36 carbon atoms, a trihydric or polyhydric alcohol of 3-18 carbon atoms, a polyhydric alcohol of 3-40 carbon atoms containing a tertiary amino group, and a diisocyanate of 3-34 carbon atoms with a compound containing one or more hydroxyl groups and one or more amino groups reactive toward isocyanate groups. The materials may be used as crosslinkable binder components for pigment-containing coatings, in particular for the production of magnetic recording materials.

    35.
    发明专利
    未知

    公开(公告)号：DE19516784A1

    公开(公告)日：1996-11-14

    申请号：DE19516784

    申请日：1995-05-11

    Applicant: BASF MAGNETICS GMBH

    Inventor： BRODT GREGOR ,  WEINGART FRANZ ,  LEHNER AUGUST ,  KOHL ALBERT ,  KRESS RIA ,  SCHELBLE JOSEF ,  SCHNEIDER NORBERT

    IPC: C08G18/10 ,  C08G18/62 ,  C08G18/65 ,  C08G18/83 ,  C08L75/00 ,  C08L101/00 ,  C08L101/12 ,  C09D5/23 ,  G11B5/702 ,  G11B5/73 ,  C08L75/04 ,  C09D17/00

    Abstract: Polymeric materials (I), suitable for use as dispersing resins, are obtd. by reacting (1) a polymer (II) of (a) 80-100 mole% (1-25C alkyl)-ester of an alpha , beta -unsatd. carboxylic acid, (b) 0-20 mole% other comonomer(s) and (c) a starter and/or regulator to produce OH end gps. on most of the polymer chains with (2) a polyfunctional isocyanate (III) to give a prod. (IV), using a mole ratio of (NCO gps.):(OH gps. in II) = 1.2-3.9, and (3) reacting (IV) with (a) a cpd. contg. NCO-reactive gps., with a ratio of 2-7 moles reactive gps. per mole free NCO gps. in (IV), and then reacting the prod. obtd. (VI) with a cpd. (VII) which reacts with the free reactive gps. to introduce acid gps., or (b) a NCO-reactive cpd. (VIII) which itself enables the introduction of acid gps. Also claimed is (i) this process as such, (ii) pigment prepns. contg. a pigment (pref. a magnetic pigment) and material (I), and (iii) magnetic recording materials contg. magnetic pigments treated with (I).

    Materials suitable as crosslinkable binder components
    36.
    发明专利
    Materials suitable as crosslinkable binder components 未知

    公开(公告)号：GB2285807A

    公开(公告)日：1995-07-26

    申请号：GB9500512

    申请日：1995-01-11

    Applicant: BASF MAGNETICS GMBH

    Inventor： WUENSCH THOMAS ,  BRODT GREGOR ,  KRESS RIA ,  SCHNEIDER NORBERT ,  KOHL ALBERT ,  LEHNER AUGUST ,  BALZ WERNER

    IPC: C08G18/12 ,  C08G18/61 ,  C08G18/65 ,  C08G18/66 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702

    Abstract: Polymeric materials (I) having an average molecular weight from 4000 to 30,000 are obtainable by reacting 1) A polyurethane (II) comprising a) 1 mol of a diol (III) having an average molecule weight of from 400 to 4000, b) from 0.3 to 9 mol of an aliphatic or cycloaliphatic diol (IV) of 2 to 18 carbon atoms, c) from 0.3 to 9 mol of an aromatic diol (V) of 8 to 30 carbon atoms, d) from 0.01 to 1 mol of a trihydric alcohol (VI) of 3 to 18 carbon atoms, e) from 0.001 to 1 mol of a polyhydric alcohol (VII) of 3 to 14 carbon atoms which contains a tertiary amino group and f) an amount of a diisocyanate (VIII) of 6 to 30 carbon atoms such that the molar ratio of the 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 toward 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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