The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1986
Filed:
Jul. 20, 1983
August Lehner, Roedersheim-Gronau, DE;
Werner Balz, Limburgerhof, DE;
Werner Lenz, Bad Durkheim, DE;
Helmut Kopke, Weisenheim, DE;
Rudolf Bachmann, Frankenthal, DE;
Milan Velic, Ludwigshafen, DE;
Milena Melzer, Ludwigshafen, DE;
Heinrich Hartmann, Limburgerhof, DE;
Reinhold Baur, Offenburg, DE;
BASF Aktiengesellschaft, , DE;
Abstract
Magnetic recording media comprise a non-magnetic base which is provided with a magnetic layer which consists of a dispersion of an anisotropic magnetic material in an organic binder which consists essentially of an OH-containing polyurea-urethane binder crosslinked with polyisocyanate. The OH-containing polyurea-urethane is obtained by reacting a polydiol, a diol and a primary or secondary aminoalcohol, and if appropriate a triol, with a diisocyanate.