公开(公告)号：DE3573345D1

公开(公告)日：1989-11-02

申请号：DE3573345

申请日：1985-07-10

Applicant: BASF AG

Inventor： MELZER MILENA ,  SCHNEIDER NORBERT ,  JAKUSCH HELMUT DR ,  BALZ WERNER DR

IPC: G11B5/702 ,  C09D5/23 ,  C09D175/06 ,  G11B5/70 ,  G11B5/842

Abstract: Magnetic recording media are produced by preparing a dispersion consisting of finely divided magnetic material, a dispersant, the conventional additives and a solution or a dispersion of a polymeric binder, applying the dispersion in the form of a layer onto a non-magnetizable base, orienting the anisotropic magnetic material by means of a magnetic field and drying the applied layer, by a process in which the dispersant employed is obtained by reacting A. from 70 to 95 parts by weight of a reaction product of I. from 0.5 to 1.5 moles of an oxoalcohol of 6 to 20 carbon atoms, II. from 6 to 18 moles of ethylene oxide and III. from 2 to 10 moles of propylene oxide, with B. from 5 to 30 parts by weight of a polyphosphoric acid having a P2O5 content of from 80 to 88%.

公开(公告)号：DE3375848D1

公开(公告)日：1988-04-07

申请号：DE3375848

申请日：1983-12-20

Applicant: BASF AG

Inventor： KOHL ALBERT ,  BALZ WERNER DR ,  MELZER MILENA ,  SCHNEIDER NORBERT ,  KOESTER EBERHARD DR ,  LEHNER AUGUST

IPC: C08F20/26 ,  C08F220/26 ,  C09D5/23 ,  C09D133/04 ,  C09D133/08 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/702

Abstract: Magnetic recording media are produced by dispersing finely divided anisotropic magnetic material and conventional additives in a solution of a polymeric binder in an organic solvent, or in an aqueous dispersion of a polymeric binder, adding a polymer based on hydrophilic ethylenically unsaturated compounds to the magnetic dispersion, applying a layer of the dispersion to a non-magnetizable base, orienting the anisotropic magnetic material in a magentic field and drying the applied layer.

公开(公告)号：DE3372554D1

公开(公告)日：1987-08-20

申请号：DE3372554

申请日：1983-08-08

Applicant: BASF AG

Inventor： KOHL ALBERT ,  SCHNEIDER NORBERT ,  LEY GREGOR DR ,  BALZ WERNER DR ,  MELZER MILENA ,  JAKUSCH HELMUT DR

IPC: G11B5/702 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/84 ,  G11B5/842

公开(公告)号：DE3461231D1

公开(公告)日：1986-12-11

申请号：DE3461231

申请日：1984-12-14

Applicant: BASF AG

Inventor： LEHNER AUGUST DIPL ING ,  KOHL ALBERT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  KOESTER EBERHARD DR ,  SOMMERMANN FRIEDRICH DR

IPC: C09D5/23 ,  C09D7/12 ,  C10M105/24 ,  C10M105/68 ,  C10N10/04 ,  C10N40/18 ,  G11B5/71

Abstract: Magnetic recording media consisting of a non-magnetic base and, applied thereto, one or more firmly adhering magnetizable layers based on magnetic material finely dispersed in a polymeric binder, at least one lubricant and other conventional additives, wherein the lubricant used is a mixture of zinc stearate which has been rendered hydrophilic and stearylamide.

公开(公告)号：DE3427682A1

公开(公告)日：1986-02-06

申请号：DE3427682

申请日：1984-07-27

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  HEIL GUENTER DR ,  KOVACS JENOE DR ,  BALZ WERNER DR ,  LENZ WERNER DR

IPC: C09D5/23 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  B05D5/12

Abstract: Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.

公开(公告)号：AT16536T

公开(公告)日：1985-11-15

申请号：AT82107881

申请日：1982-08-27

Applicant: BASF AG

Inventor： BALZ WERNER DR ,  MUENZNER WULF DR ,  SCHOMANN KLAUS DIETER DR ,  BERGER HEINZ ,  ROOS ROLAND

IPC: G11B15/60 ,  G11B23/04 ,  G11B23/50 ,  H05F3/02

公开(公告)号：DE3264672D1

公开(公告)日：1985-08-14

申请号：DE3264672

申请日：1982-09-09

Applicant: BASF AG

Inventor： BACHMANN RUDOLF DR ,  BALZ WERNER DR ,  GRAU WERNER DR ,  GUTERMANN WINFRIED ,  KOVACS JENOE DR ,  KRUCKER KARL DR ,  RUDOLF PETER ,  SCHAEFER DIETER DR ,  HACK JOACHIM

IPC: C09D5/23 ,  C09D137/00 ,  G11B5/70 ,  G11B5/702

公开(公告)号：DE3341699A1

公开(公告)日：1985-05-30

申请号：DE3341699

申请日：1983-11-18

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  KOPKE HELMUT ,  ROLLER HERMANN ,  BALZ WERNER DR ,  GRAU WERNER DR ,  KOESTER EBERHARD DR ,  SOMMERMANN FRIEDRICH DR

IPC: C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/02 ,  C09D175/04 ,  G11B5/702 ,  H01F10/10 ,  G11B5/68 ,  C09D3/72 ,  C09D3/76 ,  C09D3/81

Abstract: Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer consisting of finely divided anisotropic magnetic material which is dispersible in binders and additives, the binder being a mixture of (1) a high molecular weight thermoplastic linear polyurethane, (2) a polyvinylformal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer and (3) an OH-containing polyurethane which is crosslinked with polyisocyanates.

公开(公告)号：DE3332504A1

公开(公告)日：1985-03-28

申请号：DE3332504

申请日：1983-09-09

Applicant: BASF AG

Inventor： HEIL GUENTER DR ,  LENZ WERNER DR ,  KOVACS JENOE DR ,  GRAU WERNER DR ,  BALZ WERNER DR

IPC: C08F2/54 ,  C08G18/67 ,  C09D5/23 ,  C09D163/00 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  G11B5/68 ,  B05D5/12

Abstract: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 70 to 90% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 10 to 30% by weight of one or more copolymerizable compounds.

公开(公告)号：DE3165303D1

公开(公告)日：1984-09-13

申请号：DE3165303

申请日：1981-01-28

Applicant: BASF AG

Inventor： LEHNER AUGUST ,  HARTMANN HEINRICH DR ,  BACHMANN RUDOLF DR ,  BALZ WERNER DR ,  KOHL ALBERT

IPC: C08G18/08 ,  C08G18/83 ,  C09D5/23 ,  G11B5/70 ,  G11B5/702 ,  G11B5/842

Abstract: Magnetic recording media comprising a non-magnetic base and, applied thereto, one or more magnetizable layers based on an anisotropic magnetic material finely dispersed in an organic binder containing an ionomeric polyurethane elastomer, wherein the binder used is a substantially aqueous polyurethane dispersion prepared from a polyurethane solution which has been obtained by reacting a polyisocyanate with an organic polyhydroxy compound in the presence of an organic solvent that is inert to isocyanate groups.