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EP0142798A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Magnetic-recording medium

Assignee: BASF SE
•
Filing: 1984-11-09
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Granted: —
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Expires: 2004-11-09
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Abstract

Abstract Translated from German Die Erfindung betrifft magnetische Auszeichnungsträger aus einem nichtmagnetischen Trägermaterial, das mit einer Magnetschicht aus in Bindemitteln und Zusatzstoffen dispergierbarem, feinteiligem anisotropen magnetischem Material versehen ist und wobei das Bindemittel ein Gemisch aus (1) einem hochmolekularen, thermoplastischen linearen Polyurethan, (2) einem Polyvinylformalbindemittel, einem Phenoxyharz, einem Celluloseester oder einem Vinylchlorid-Copolymerisat und (3) einem OH-gruppenhaltigen Polyurethan, das mit Polyisocyanaten vernetzt wird, besteht. The invention relates to magnetic award carriers made of a non-magnetic carrier material which is provided with a magnetic layer of finely divided anisotropic magnetic material which is dispersible in binders and additives, and wherein the binder is a mixture of (1) a high molecular weight, thermoplastic linear polyurethane, (2) a polyvinyl formal binder, a phenoxy resin, a cellulose ester or a vinyl chloride copolymer and (3) an OH group-containing polyurethane which is crosslinked with polyisocyanates.

Inventors

  • 👤 August Lehner
  • 👤 Helmut Kopke
  • 👤 Hermann Roller
  • 👤 Werner Dr. Balz
  • 👤 Werner Dr. Grau
  • 👤 Eberhard Dr. Koester
  • 👤 Friedrich Dr. Sommermann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 19:35
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7021; G11B5/7022; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31855; Y10T428/31935; Y10T428/31942

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