Patent · US Expired

Magnetic recording media

US4560456A · kind A · utility

27Cited by

8References

1Claims

0Family size

Assignee

BASF SE

Inventors

Guenter Heil
Werner Lenz · Bad Dürkheim, DE
Jenoe Kovacs · Heßheim, DE
Werner Grau · Frankenthal (Pfalz), DE
Werner Balz · Schifferstadt, DE

Key dates

Filing date	Sep 10, 1984
Grant date	Dec 24, 1985
Priority date	—
Expiry date	Sep 10, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 70 to 90% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 10 to 30% by weight of one or more copolymerizable compounds.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.