Patent · US Expired

Curable reaction compositions for producing data carriers

US4961179A · kind A · utility

2Cited by

4References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Werner Kloker · Krefeld, DE
Dieter Freitag · Krefeld, DE
Walter Uerdingen · Leverkusen, DE
Bernhard Hess · Moers, DE
Helmut Schmid · Freudenstadt, DE

Key dates

Filing date	Jul 13, 1987
Grant date	Oct 2, 1990
Priority date	—
Expiry date	Jul 13, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG11B7/253
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Reaction compositions of selected make-up result after curing in non-meltable polymers of high mechanical stability and low water uptake. Owing to the low birefringence of the cured products, these compositions are highly suitable for preparing carrier materials for optically and magnetically readable and/or writable data carriers.

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