Magnetic recording medium comprising a specific type of copolymer binder
US4689269A · kind A · utility
4Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1985 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Apr 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31942
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium comprising a non-magnetic support, and a magnetic recording layer formed on the support. The layer is made of a composition which comprises magnetic powder dispersed in a resin binder comprising a thermosetting resin and a copolymer of maleic anhydride and an olefinically unsaturated monomer. The monomer is selected from alkyl esters of acrylic and methacrylic acids, alkenes, vinyl chloride, styrene and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.