Lubricant for magnetic recording media, and magnetic recording medium using the lubricant
US8445123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2009 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Nov 20, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C265/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A magnetic recording medium having high bonding capability between the surface lubricant and the diamond-like carbon (DLC) protective layer in the surface of the magnetic recording medium is disclosed. The lubricant is a fluorine-containing lubricant for magnetic recording media represented by the following formula (1), (2) or (3), wherein the substituents R1, R2, R3, R4, R5 and R6 in the terminal part of the lubricant each independently represent an organic group, and at least one of the substituents R1 and R2, at least one of the substituents R3 and R4, and at least one of the substituents R5 and R6 each have an isocyanate group:Also disclosed is a magnetic recording medium using the lubricant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.