公开(公告)号：DE3568659D1

公开(公告)日：1989-04-13

申请号：DE3568659

申请日：1985-04-20

Applicant: BASF AG

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

IPC: C08G18/67 ,  C09D5/23 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702

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 binder matrix being obtained by electron beam curing of a mixture of from 60 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable acrylate double bonds and from 0 to 40% by weight of an acrylate monomer and/or an acrylate prepolymer and/or an N-vinyl monomer.

公开(公告)号：DE3267136D1

公开(公告)日：1985-12-05

申请号：DE3267136

申请日：1982-06-12

Applicant: BASF AG

Inventor： REITER UDO DR ,  KOVACS JENOE DR ,  SCHENCK HANS-UWE DR

IPC: C08G73/00 ,  B29C43/00 ,  C08G73/10 ,  C08J3/14

Abstract: A polyimide powder particularly suitable for the production of moldings by high pressure sintering is prepared by mixing a solution of an aromatic polyimido-acid, obtained by a conventional process and having an intrinsic viscosity of 1.5 to 2.5 dl/g, in an aprotic dipolar organic solvent, with a water-entraining agent, heating the mixture to the boiling point of the entraining agent, azeotropically distilling off the water formed, filtering off the polyimide powder which precipitates, washing it if appropriate, and drying it.

公开(公告)号：DE3263427D1

公开(公告)日：1985-06-05

申请号：DE3263427

申请日：1982-10-22

Applicant: BASF AG

Inventor： SARNECKI WILHELM DR ,  KOVACS JENOE DR ,  LOESER WERNER DR ,  RUDOLF PETER DR ,  VAETH GUENTER

IPC: C01G49/02 ,  C01G49/06 ,  C01G49/08 ,  G11B5/706 ,  H01F1/11

Abstract: Acicular ferrimagnetic iron oxides are prepared by a process in which iron (III) oxide hydroxide consisting essentially of lepidocrocite is reduced at from 350 DEG to 600 DEG C. by means of an organic compound which is a synthetic polymer with a molecular weight of from 3,000 to 40,000 to give magnetite, which, if desired, is subsequently partially or completely oxidized with an oxygen-containing gas at from 200 DEG to 450 DEG C.

公开(公告)号：DE3332564A1

公开(公告)日：1985-03-28

申请号：DE3332564

申请日：1983-09-09

Applicant: BASF AG

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

IPC: C08F2/46 ,  C09D5/23 ,  C09D163/00 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  G11B5/68 ,  B05D5/12

Abstract: Magnetic recording media comprising 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 60 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 0 to 40% by weight of an acrylate and/or an acrylate prepolymer and/or an N-vinyl monomer and/or an N-vinyl prepolymer.

公开(公告)号：DE3227335A1

公开(公告)日：1984-01-26

申请号：DE3227335

申请日：1982-07-22

Applicant: BASF AG

Inventor： KOVACS JENOE DR ,  KOHL ALBERT

IPC: C09D5/23 ,  C09D101/18 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/70

公开(公告)号：CH602834A5

公开(公告)日：1978-08-15

申请号：CH1637775

申请日：1975-12-17

Applicant: BASF AG

Inventor： FABIAN WOLFGANG DR ,  KOVACS JENOE DR

IPC: C08L79/08 ,  C08J3/12 ,  C08J3/14 ,  C08L33/00 ,  C08L33/02 ,  C09D5/03 ,  C09D5/46 ,  C09D179/08 ,  B29B1/02 ,  H01B13/16 ,  C08G73/16

Abstract: A process for the manufacture of finely divided polyester-imide powders wherein solutions of polyester-imides in organic solvents are solidified by cooling, the solvent is removed by sublimation and the solid product is pulverized. The powders may be used, as aqueous dispersions, to produce heat-resistant coatings on metallic conductors.

公开(公告)号：DE2202368A1

公开(公告)日：1973-07-26

申请号：DE2202368

申请日：1972-01-19

Applicant: BASF AG

Inventor： KOVACS JENOE DR ,  SRNA CHRISTIAN DR

IPC: C08G73/00 ,  C08G73/10 ,  C08G73/16 ,  C09D179/08 ,  C09D3/70

公开(公告)号：DE3678329D1

公开(公告)日：1991-05-02

申请号：DE3678329

申请日：1986-05-03

Applicant: BASF AG

Inventor： SCHWAB EKKEHARD DR ,  STECK WERNER DR ,  RUDOLF PETER DR ,  VAETH GUENTER ,  JAKUSCH HELMUT DR ,  KOVACS JENOE DR

IPC: H01F1/06 ,  B22F1/02 ,  B22F9/22 ,  B22F9/24 ,  G11B5/706

公开(公告)号：DE3921146A1

公开(公告)日：1991-01-10

申请号：DE3921146

申请日：1989-06-28

Applicant: BASF AG

Inventor： KOVACS JENOE DR ,  OHLINGER MANFRED DR ,  STEUERWALD MANFRED

IPC: G11B5/706 ,  C09D5/23 ,  C09D167/00 ,  C09D171/00 ,  C09D171/12 ,  C09D175/00 ,  C09D175/04 ,  G11B5/708 ,  G11B5/73 ,  H01F1/00 ,  H01F1/11

公开(公告)号：DE3408000A1

公开(公告)日：1985-09-12

申请号：DE3408000

申请日：1984-03-03

Applicant: BASF AG

Inventor： GRAU WERNER DR ,  JAKUSCH HELMUT DR ,  KOVACS JENOE DR ,  OHLINGER MANFRED DR ,  RUDOLF PETER DR ,  ROLLER HERMANN

IPC: G11B5/708 ,  G11B5/70 ,  G11B5/72

Abstract: The invention relates to magnetic recording carriers which comprise a non-magnetic carrier material and a magnetic coating adhesively applied thereupon and composed of fine-particled ferromagnetic metal powder, at least one unmagnetic wear-resistant metal oxide powder, which has a spherical form and is defined in terms of its size distribution and the quantitative proportion thereof, organic binder and the usual auxiliaries.