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:
Apr. 19, 1977
Filed:
Sep. 19, 1974
Hermann Roller, Ludwigshafen, DT;
Werner Senkpiel, Laudenbach, DT;
Gerd Wunsch, Speyer, DT;
Job-Werner Hartmann, Ludwigshafen, DT;
Friedrich Fuchs, Kirchheim, DT;
Joachim Hack, Ludwigshafen, DT;
Volker Kiener, Ludwigshafen, DT;
Herbert Motz, Ludwigshafen, DT;
Werner Ostertag, Willstaett, DT;
BASF Aktiengesellschaft, Ludwigshafen, DT;
Abstract
Magnetic recording tape especially suitable for use as video tape and computer tape, comprising a base carrying a magnetic coating which consists essentially of a dispersion of a finely divided magnetic pigment and at least one lubricant in an organic binder. The lubricant is a compound of the formula ##STR1## IN WHICH N IS AN INTEGER OF FROM 3 TO 8 AND R.sup.1 and R.sup.2 are an alkoxy or aralkoxy radical or conjointly are an alkyldioxy radical of 3 to 18 carbon atoms. A magnetic recording tape prepared with a high proportion of such a lubricant is distinguished by high abrasion resistance coupled with a minimum transfer of material to the magnetic heads even under fluctuating climatic conditions.