Patent · US Expired

Magnetic recording media

US5523151A · kind A · utility

0Cited by

3References

2Claims

0Family size

Assignee

BASF Magnetics GmbH · DE

Inventors

Norbert Schneider · Schorndorf, DE
August Lehner
Ursula Klein
Werner Lenz · Bad Dürkheim, DE
Werner Balz · Schifferstadt, DE
Albert Kohl · Laumersheim, DE
Guenter Bettinger · Schifferstadt, DE

Key dates

Filing date	Dec 21, 1992
Grant date	Jun 4, 1996
Priority date	—
Expiry date	Dec 21, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31663
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Magnetic recording media are obtained by preparing a dispersion of anisotropic magnetic material and additives in a solution of a polymeric binder in an organic solvent, applying the dispersion as a layer to a nonmagnetizable substrate, then orienting the anisotropic magnetic material in a magnetic field and solidifying the applied magnetic layer, and the magnetic layer contains water-repellent polysilica and, if required, a highly viscous polysiloxane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.