公开(公告)号：GB2306490A

公开(公告)日：1997-05-07

申请号：GB9622782

申请日：1996-11-01

Applicant: BASF MAGNETICS GMBH

Inventor： WUENSCH THOMAS ,  KRESS RIA ,  LOCH WERNER ,  LEHNER AUGUST ,  KOHL ALBERT ,  SCHNEIDER NORBERT ,  BURKHARDT UWE

IPC: C08K3/08 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C08G18/64 ,  C08G18/72 ,  C08K3/22 ,  C08L75/00 ,  C08L75/04 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702

Abstract: Hydroxyl-containing polyurethanes I are derived from a) a diisocyanate of 6 to 30 carbon atoms (component II) with b) a component III comprising * small Greek alpha *) an aliphatic diol of 2 to 20 carbon atoms or * small Greek beta *) an aromatic-aliphatic or aromatic-cycloaliphatic diol of 8 to 30 carbon atoms having nonphenolic hydroxyl groups as hydroxyl groups of the diol, and c) a polyhydric alcohol having at least 3 hydroxyl groups, 3 to 18 carbon atoms and nonphenolic hydroxyl groups as hydroxyl groups of the alcohol (component IV), the amounts of components II to IV being such that the total number of nonphenolic hydroxyl groups is from 1.1 to 5.0 per isocyanate group of II. The polyurethanes can be used as binders or binder components for pigment-containing coatings, in particular for the production of magnetic recording materials.

公开(公告)号：DE19644347A1

公开(公告)日：1997-05-07

申请号：DE19644347

申请日：1996-10-25

Applicant: BASF MAGNETICS GMBH

Inventor： WUENSCH THOMAS DR ,  KRESS RIA DR ,  LOCH WERNER DR ,  LEHNER AUGUST ,  KOHL ALBERT ,  SCHNEIDER NORBERT ,  BURKHARDT UWE

IPC: C08K3/08 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C08G18/64 ,  C08G18/72 ,  C08K3/22 ,  C08L75/00 ,  C08L75/04 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  C08G18/30 ,  C09D17/00

Abstract: A hydroxyl-containing polyurethane (I) comprises (a) a 6-30C diisocyanate; (b) a component comprising (i) a 2-20C aliphatic diol or (ii) a 8-30C aromatic-(cyclo)aliphatic diol having non-phenolic hydroxyl groups as the diol hydroxyl groups; and (c) a 3-18C polyhydric alcohol having at least 3 hydroxyl groups and non-phenolic hydroxyl groups as alcohol hydroxy groups. The total number of non-phenolic hydroxyl groups in (I) is 1.1-5.0 per isocyanate group in (a). Also claimed are (1) a binder system curable by crosslinking, which comprises (I) and (d) a polyfunctional isocyanate, and where the ratio of isocyanate groups in (d) to the number of free hydroxyl groups in (I) is 0.3-5.0; and (2) a coated article (preferably a magnetic recording material) obtained by applying a layer of the binder system and subsequently crosslinking. Preferably (b) is a 2-10C aliphatic diol. (c) is a 3-6C polyhydric alcohol having 3-5 hydroxyl groups. The binder system contains non-magnetic or magnetic pigments.

公开(公告)号：DE59305529D1

公开(公告)日：1997-04-03

申请号：DE59305529

申请日：1993-10-02

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  BRODT GREGOR DR ,  KRESS RIA DR ,  MELZER MILENA ,  SCHNEIDER NORBERT

IPC: C09D5/23 ,  C08G18/10 ,  C08G18/62 ,  C09D175/04 ,  G11B5/702 ,  G11B5/842

Abstract: The invention relates to magnetic recording carriers (media) comprising a nonmagnetic carrier (support, base) material and at least one magnetisable layer, applied thereto in a strongly adhesive manner, based on a magnetic material dispersed in at least one polyurea-urethane and at least one polyurethane-urea (meth)acrylate, where the polyurethane-urea (meth)acrylate is obtained by reacting a polyacrylate with a mixture of diisocyanates and polyisocyanates and converting the remaining NCO groups into substituted urea groups by means of aminoalkylenetrialkoxysilanes.

公开(公告)号：DE4234325A1

公开(公告)日：1994-04-14

申请号：DE4234325

申请日：1992-10-12

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  BRODT GREGOR DR ,  KRESS RIA DR ,  MELZER MILENA ,  SCHNEIDER NORBERT

IPC: C09D5/23 ,  C08G18/10 ,  C08G18/62 ,  C09D175/04 ,  G11B5/702 ,  G11B5/842 ,  G11B5/62

Abstract: The invention relates to magnetic recording carriers (media) comprising a nonmagnetic carrier (support, base) material and at least one magnetisable layer, applied thereto in a strongly adhesive manner, based on a magnetic material dispersed in at least one polyurea-urethane and at least one polyurethane-urea (meth)acrylate, where the polyurethane-urea (meth)acrylate is obtained by reacting a polyacrylate with a mixture of diisocyanates and polyisocyanates and converting the remaining NCO groups into substituted urea groups by means of aminoalkylenetrialkoxysilanes.

公开(公告)号：DE19638035A1

公开(公告)日：1997-04-03

申请号：DE19638035

申请日：1996-09-18

Applicant: BASF MAGNETICS GMBH

Inventor： AUWETER HELMUT DR ,  LOESER WERNER DR ,  PFANNEBECKER EMIL ,  SCHNEIDER NORBERT ,  JAKUSCH HELMUT DR ,  WIETHOELTER DIETER ,  KOERNER REINHARD DR ,  OHLINGER MANFRED DR

IPC: G11B5/842 ,  G11B5/84

Abstract: The magnetic recording material has a non magnetic carrier which is coated with a polymer binding material that contains a dispersion of fine pigments of needle type magnetic particles. Two types of pigment are used with the first having a concentration of 15-45 meters per gram and the second having 5 meters per gram higher. The mix is with a first pigment of 50-59 % and the second pigment with 41-50%.

公开(公告)号：DE19622671A1

公开(公告)日：1997-01-02

申请号：DE19622671

申请日：1996-06-05

Applicant: BASF MAGNETICS GMBH

Inventor： VEITCH RONALD JOHN DR ,  BETTINGER GUENTER ,  SCHNEIDER NORBERT

IPC: G01K11/12 ,  G01K11/06 ,  G01K7/36 ,  G01N29/02 ,  B65D79/02 ,  G09F13/16 ,  G09F7/00

Abstract: The appliance has a container (2) with a heat conducting connection to the object (1) to be monitored. In its interior the connection contains a suspension (3) of a medium having a melting point or softening level lying within the region of the control temperature. Magnetizable particles (110 are introduced into the medium and the container has, in addition, in one position a solid magnetizable body (4). On its inner face opposite to the stored product is an optically indicating layer externally visible to the observer through the outer wall.

公开(公告)号：DE59207251D1

公开(公告)日：1996-10-31

申请号：DE59207251

申请日：1992-12-09

Applicant: BASF MAGNETICS GMBH

Inventor： SCHNEIDER NORBERT ,  LEHNER AUGUST ,  KLEIN URSULA ,  LENZ WERNER DR ,  BALZ WERNER DR ,  KOHL ALBERT ,  BETTINGER GUENTER

IPC: C08K9/06 ,  C08K9/04 ,  C08L101/00 ,  C09D5/23 ,  F02B75/02 ,  G11B5/708 ,  G11B5/73

公开(公告)号：DE59205483D1

公开(公告)日：1996-04-04

申请号：DE59205483

申请日：1992-12-02

Applicant: BASF MAGNETICS GMBH

Inventor： BOBRICH MICHAEL DR ,  LEHNER AUGUST ,  ROLLER HERMANN ,  SUETTINGER RUDOLF DR ,  KRESS RIA DR ,  SCHNEIDER NORBERT ,  LENZ WERNER DR ,  ENGELHARDT PETER ,  RUDOLF PETER DR ,  BRODT GREGOR DR ,  BALZ WERNER DR ,  KOHL ALBERT

IPC: C09D175/16 ,  C08G18/10 ,  C08G18/62 ,  C09D4/02 ,  C09D5/23 ,  C09D175/14 ,  G11B5/702

Abstract: The invention relates to magnetic recording media comprising a non-magnetic carrier material and at least one magnetizable layer, applied adherently thereto, based on a magnetic material dispersed in at least one polyurethane and a polyurethane urea (meth)acrylate, where the polyurethane urea (meth)acrylate is obtained by reacting a hydroxyl-containing poly(meth)acrylate with a mixture of diisocyanates and polyisocyanates and converting the NCO groups which remain into urea groups by means of ammonia or primary or secondary amines.

公开(公告)号：FR2714909A1

公开(公告)日：1995-07-13

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.

公开(公告)号：DE4445174A1

公开(公告)日：1995-07-13

申请号：DE4445174

申请日：1994-12-17

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: Curable binder component (1) with a mol.wt. of 4000-30000, 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) 0.3-9 mole 2-18C (cyclo)aliphatic diol, (c) 0.3-9 mole 8-30 C aromatic diol, (d) 0.01-1 mole 3-18C triol and (e) 0.001-1 mole 3-14C polyol contg. a tert. amino gp. with (f) a 6-30 C diisocyanate, using a molar ratio of NCO gps. in (f) to total OH gp. 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 reaction 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.