公开(公告)号：GB2282338B

公开(公告)日：1997-08-20

申请号：GB9419183

申请日：1994-09-22

Applicant: BASF MAGNETICS GMBH ,  EMTEC MAGNETICS GMBH

Inventor： BRODT GREGOR ,  VASS ATTILA ,  LOCH WERNER ,  LEHNER AUGUST ,  LENZ WERNER ,  SCHNEIDER NORBERT

IPC: C08G18/10 ,  C08G18/62 ,  C08G18/78 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  C08L75/04

Abstract: In magnetic recording media consisting of a nonmagnetic substrate and at least one magnetizable layer firmly applied thereon and based on magnetic material dispersed in a binder mixture which contains at least one hydroxyl-containing, preferably low molecular weight polyureaurethane and one polyurethaneurea (meth)acrylate, the polyurethaneurea (meth)acrylate is obtained by reacting a poly(meth)acrylate having up to 2 terminal OH groups per mol and a molecular weight of from 200 to 50,000 with a mixture of aliphatic polyisocyanates having an average functionality of from 3.0 to 6.0 NCO groups per mol, consisting of from 0.1 to 10% by weight of a diisocyanate, from 30 to 80% by weight of a triisocyanate and from 20 to 60% by weight of an isocyanate having a functionality of from 4 to 10, with the proviso that from 1.2 to 3.0 NCO groups react per OH group and the remaining NCO groups are converted into substituted terminal urea groups with a polyfunctional amine or with a mixture of different polyfunctional amines.

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.

公开(公告)号：GB2285985B

公开(公告)日：1998-04-29

申请号：GB9500467

申请日：1995-01-11

Applicant: BASF MAGNETICS GMBH ,  EMTEC MAGNETICS GMBH

Inventor： BRODT GREGOR ,  LEHNER AUGUST ,  LINDNER ALFRED ,  GRAF HERMANN ,  BOBRICH MICHAEL ,  KRESS RIA ,  SCHNEIDER NORBET ,  KOHL ALBERT ,  LOCH WERNER

IPC: C08G18/65 ,  C08F2/38 ,  C08F8/30 ,  C08F8/32 ,  C08G18/10 ,  C08G18/62 ,  C08G18/78 ,  C09D5/23 ,  C09D7/45 ,  C09D17/00 ,  C09D175/04 ,  C09K23/00 ,  C09K23/52 ,  G11B5/70 ,  G11B5/702 ,  C08G18/83

Abstract: Polymeric materials (I) are obtainable by reacting 1. a polymer II comprising a) from 80 to almost 100 mol % of a C1-C25-alkyl ester of an alpha , beta -unsaturated carboxylic acid, b) from 0 to 20 mol % of a further monomer, c) tetrahydrofuran hydroperoxide as polymerization initiator and, if required, d) a further polymerization initiator and/or regulator by means of which the majority of the polymer chains of the polymer II are terminated at one of their ends by a hydroxyl group, 2. with a polyfunctional isocyanate III to give a reaction product IV, the amount of isocyanate groups being from 1.2 to 3.0 mol per mol of hydroxyl groups of II, and 3. reacting IV with ammonia or with a compound V which has an amino function reactive toward isocyanates. The polymeric materials can be used as dispersing resins for pigment-containing coatings, in particular for the production of magnetic recording materials.

公开(公告)号：GB2285807B

公开(公告)日：1998-04-29

申请号：GB9500512

申请日：1995-01-11

Applicant: BASF MAGNETICS GMBH ,  EMTEC 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: 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：JPH0850717A

公开(公告)日：1996-02-20

申请号：JP356695

申请日：1995-01-12

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: PURPOSE: To provide a coupling agent having improved mechanical characteristics, such as, limit strength, hardness, wear resistance and elasticity, and exhibiting a high crosslinking speed, by causing the coupling agent to contain polyurethane made of predetermined components and a material having a specified molecular weight. CONSTITUTION: Polyurethane contains 1mol of diol having an average molecular weight of 400-4000, 0.3-9mol of aliphatic compound having 2-18 carbon atoms, 0.3-9mol of aromatic diol having 8-30 carbon atoms, and 0.01-1mol of trivalent alcohol having 3-8 carbon atoms. The polyurethane further contains 0.01-1mol of multivalent alcohol having 3-14 carbon atoms and tertiary amino group, and diisocyanate having 6-30 carbon atoms with a molar ratio of isocyanate group to all hydroxyl groups being 1.05:1-1.4:1. This polyurethane and a predetermined compound are caused to react under specified conditions to provide a material having an average molecular weight of 4000-30000, thereby forming a magnetic recording medium.

公开(公告)号：JPH08333435A

公开(公告)日：1996-12-17

申请号：JP10980596

申请日：1996-04-30

Applicant: BASF MAGNETICS GMBH

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

IPC: C08L75/04 ,  C08G18/10 ,  C08G18/62 ,  C08G18/65 ,  C08G18/83 ,  C08L75/00 ,  C08L101/00 ,  C08L101/12 ,  C09D5/23 ,  G11B5/702 ,  G11B5/73 ,  G11B5/704

公开(公告)号：DE59607438D1

公开(公告)日：2001-09-13

申请号：DE59607438

申请日：1996-04-26

Applicant: EMTEC MAGNETICS GMBH

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

IPC: C08G18/62 ,  C08G18/10 ,  C08G18/65 ,  C08G18/83 ,  C09D5/23 ,  C09D17/00 ,  G11B5/702

Abstract: chemical industry. SUBSTANCE: described is polymeric binder for pigment-containing agents or bodies for applying coatings. Said binder is product of reaction of polymer based on at least one complex alkyl ester of alpha j beta-saturated carboxylic acid having 1-25 carbon atoms in alkyl moiety which comprises at least one starter and/or regulator which allow for presence of one end hydroxy group on one of ends of most polymeric chains with at least one multiatomic nonaromatic isocyanate at isocyanate group to hydroxy group molar ratio of (1.2- 3.9):1, reaction of the resulting isocyanate group containing product with at least one compound containing groups reactive with respect to isocyanates at molar ratio of reactive groups to free isocyanate groups present in product of (2-7):1 followed by reaction of the resulting product with at least one compound which reacts with free reactive groups and which introduces acid groups into product or with at least one compound containing groups which are active with respect to isocyanates said compound introduces acid groups into product containing isocyanate groups. The resulting binders and bodies for coatings have improved stability. EFFECT: improved properties of the polymeric binder. 7 cl, 8 ex

公开(公告)号：DE4446383C2

公开(公告)日：2003-04-17

申请号：DE4446383

申请日：1994-12-23

Applicant: EMTEC MAGNETICS GMBH

Inventor： BRODT GREGOR ,  LEHNER AUGUST ,  LINDNER ALFRED ,  GRAF HERMANN ,  BOBRICH MICHAEL

IPC: C08G18/65 ,  C08F2/38 ,  C08F8/30 ,  C08F8/32 ,  C08G18/10 ,  C08G18/62 ,  C08G18/78 ,  C09D5/23 ,  C09D7/45 ,  C09D17/00 ,  C09D175/04 ,  C09K23/00 ,  C09K23/52 ,  G11B5/70 ,  G11B5/702 ,  C08G18/83 ,  C08L75/00 ,  B01F17/52 ,  C09D175/00

Abstract: Polymeric materials (I) are obtainable by reacting 1. a polymer II comprising a) from 80 to almost 100 mol % of a C1-C25-alkyl ester of an alpha , beta -unsaturated carboxylic acid, b) from 0 to 20 mol % of a further monomer, c) tetrahydrofuran hydroperoxide as polymerization initiator and, if required, d) a further polymerization initiator and/or regulator by means of which the majority of the polymer chains of the polymer II are terminated at one of their ends by a hydroxyl group, 2. with a polyfunctional isocyanate III to give a reaction product IV, the amount of isocyanate groups being from 1.2 to 3.0 mol per mol of hydroxyl groups of II, and 3. reacting IV with ammonia or with a compound V which has an amino function reactive toward isocyanates. The polymeric materials can be used as dispersing resins for pigment-containing coatings, in particular for the production of magnetic recording materials.

公开(公告)号：RU2174988C2

公开(公告)日：2001-10-20

申请号：RU96109203

申请日：1996-05-11

Applicant: EMTEC MAGNETICS GMBH

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

IPC: C08G18/62 ,  C08G18/10 ,  C08G18/65 ,  C08G18/83 ,  C09D5/23 ,  C09D17/00 ,  G11B5/702

Abstract: chemical industry. SUBSTANCE: described is polymeric binder for pigment-containing agents or bodies for applying coatings. Said binder is product of reaction of polymer based on at least one complex alkyl ester of alpha j beta-saturated carboxylic acid having 1-25 carbon atoms in alkyl moiety which comprises at least one starter and/or regulator which allow for presence of one end hydroxy group on one of ends of most polymeric chains with at least one multiatomic nonaromatic isocyanate at isocyanate group to hydroxy group molar ratio of (1.2- 3.9):1, reaction of the resulting isocyanate group containing product with at least one compound containing groups reactive with respect to isocyanates at molar ratio of reactive groups to free isocyanate groups present in product of (2-7):1 followed by reaction of the resulting product with at least one compound which reacts with free reactive groups and which introduces acid groups into product or with at least one compound containing groups which are active with respect to isocyanates said compound introduces acid groups into product containing isocyanate groups. The resulting binders and bodies for coatings have improved stability. EFFECT: improved properties of the polymeric binder. 7 cl, 8 ex

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.