Magnetic media having tridecyl stearate lubricant
AssigneeInternational Business Machines Corporation
InventorsDonald Gini, Theodore L. Larson, Ronald A. Merten, Alex Simonetti
Life of this patent
Estimating the term…
Abstract
Magnetic recording media highly loaded with magnetic oxide particles. This media possesses a very smooth surface finish, and in operation exhibits low media wear, as well as low wear of an associated transducing head. This media includes an internal lubricant tridecyl stearate; i.e. a linear, 31-carbon fatty acid ester molecule formed by the ester linking of 13-carbon tridecyl alcohol and 18-carbon stearic acid, the molecule having the composition ##STR1##
Claims7
Magnetic recording media comprising a base substrate having a magnetic recording layer thereon, said layer consisting of finely divided magnetic particles dispersed in a binder and including a lubricant having essentially the composition ##STR2##
Flexible magnetic recording media comprising a flexible substrate, a magnetic recording layer on said substrate, said layer having chromium dioxide magnetic particles dispersed in a urethane-based binder matrix, and including tridecyl stearate lubricant.
Flexible magnetic recording media comprising a flexible substrate, a magnetic recording layer on said substrate, said layer having gamma iron oxide magnetic particles dispersed in a urethane-based binder matrix, and including tridecyl stearate lubricant.
Dependencies are inferred from the claim text.