中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

37 records (took 0.022 seconds)

    11.
    发明专利
    未知

    公开(公告)号：FR2714909B1

    公开(公告)日：1997-01-31

    申请号：FR9500186

    申请日：1995-01-10

    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 ,  C08G18/32

    Abstract: Preparation of materials (I) having an average molecular weight from 4000 to 30,000, obtainable by reacting 1) a polyurethane (II) comprising a) 1 mol of a diol (III) having an average molecular 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.

    Curable binder component useful in pigmented coating, esp. for magnetic recording material
    14.
    发明专利
    Curable binder component useful in pigmented coating, esp. for magnetic recording material 未知

    公开(公告)号：DE4445173A1

    公开(公告)日：1995-07-13

    申请号：DE4445173

    申请日：1994-12-17

    Applicant: BASF MAGNETICS GMBH

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

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

    Abstract: Curable binder component (I) with mol. wt. of 25000-150000, useful for pigmented coatings, is prepd. from a polyurethane (II) obtd. by reacting (a) 1 mole diol with a mol. wt. of 400-4000, (b) 0.1-10 mole 2-18 C (cyclo)aliphatic diol, (c) 0.01-10 mole 8-36 C aromatic diol, (d) 0.01-2 mole 3-18C triol and (e) 0.001-8 mole 3-40 C polyol contg. a tert. amino gp. with (f) a 6-34 C diisocyanate, using a molar ratio of NCO gps. in (f) to total OH gps. in (a-e) of (1.05-1.4):1. (I) is prepd. by reacting (II) with a cpd. (III) having OH gp(s). and also NCO-reactive amino gp(s). in such an amt. that the no. of reactive amino gps. in (III) corresponds to the no. of NCO gps. in (II). Also claimed are articles with a coating, esp. a coating contg. a magnetic pigment, and magnetic recording materials contg. (I); and the coating process.

Patent Agency Ranking