Patent · US Expired

Optical recording medium

US4966798A · kind A · utility

9Cited by

6References

2Claims

0Family size

Assignee

BASF SE

Inventors

Sibylle Brosius · Ludwigshafen, DE
Helmut Barzynski · Bad Dürkheim, DE
Karl-Heinz Feuerherd · Ludwigshafen, DE
Wolfgang Schrott · Cologne, DE
Bernhard Albert · Monsheim, DE
Michael Acker · Ludwigshafen am Rhein, DE
Klaus D. Schomann · Stockach, DE
Harald Kuppelmaier · Heidelberg, DE
Michael Schmitt · Worms, DE

Key dates

Filing date	Jun 9, 1989
Grant date	Oct 30, 1990
Priority date	—
Expiry date	Jun 9, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/149
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An optical recording medium comprises a support material and a light-absorbing layer consisting essentially of a soluble mixture of a thermoplastic binder and at least one dye, wherein the thermoplastic binder is a phenol-aldehyde resin having an average molecular weight of greater than 300 which is soluble in an alcohol having a boiling point of less than 200.degree. C.

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