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:
Aug. 06, 1996
Filed:
Dec. 18, 1992
Michael Bobrich, Boehl-Iggelheim, DE;
August Lehner, Roedersheim-Gronau, DE;
Hermann Roller, Ludwigshafen, DE;
Rudolf Suettinger, Heidelberg, DE;
Ria Kress, Ludwigshafen, DE;
Norbert Schneider, Altrip, DE;
Werner Lenz, Bad Durkheim, DE;
Peter Engelhardt, Hessisch Oldendorf, DE;
Peter Rudolf, Maxdorf, DE;
Gregor Brodt, Heppenheim, DE;
Werner Balz, Limburgerhof, DE;
Albert Kohl, Laumersheim, DE;
BASF Magnetics GmbH, Mannheim, DE;
Abstract
Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer bonded thereon and based on a magnetic material dispersed in at least one polyurethane and one polyurethaneurea (meth)acrylate, the polyurethaneurea (meth)acrylate being obtained by reacting a hydroxyl-containing poly(meth)acrylate with a mixture of di- and polyisocyanates and converting the remaining NCO groups with ammonia or primary or secondary amines into urea groups.