Magnetic recording media of improved mechanical resistance
US4048375A · kind A · utility
4Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Jul 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31765
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Magnetic recording media consisting of a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on finely divided magnetic pigment dispersed in organic binders, which coating contains, according to the invention, salts of long-chain basic polyaminoamides with high molecular weight organic acid esters. Such magnetic recording media exhibit improved mechanical resistance and improved adhesion of the coating to the base, coupled with advantageous electromagnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.