Ammonium carboxylate lubricant and magnetic recording medium using the same
US5456980A · kind A · utility
12Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lubricant comprising a multifunctional ammonium carboxylate represented by the general formula (1) and a magnetic recording medium comprising a non-magnetic support having a magnetic layer thereon, on the top of which a protective film is formed, wherein the lubricant is coated on the medium to form a lubricant film. ##STR1## where n is an integer of 2 to 4, Rf represents a non-branched, linear perfluoropolyether chain having an average molecular weight of 3000 to 10000, R.sup.1 and R.sup.2 represent hydrogen or an alkyl group, and R represents an organic group of two to four valences having one or more aromatic rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.