Patent · US Expired

Optical recording medium which has a reflector layer containing a silicon-phthalocyanine derivative

US4917989A · kind A · utility

5Cited by

17References

10Claims

0Family size

Assignee

BASF SE

Inventors

Bernhard Albert · Monsheim, DE
Peter Hauser · Raleigh, US
Michael Acker · Ludwigshafen am Rhein, DE
Wolfgang Schrott · Cologne, DE
Gerhard Wagenblast · Wachenheim, DE

Key dates

Filing date	May 17, 1988
Grant date	Apr 17, 1990
Priority date	—
Expiry date	May 17, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/146
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An optical recording medium contains a transparent base, a dye-containing layer which is sensitive to laser light and a reflector layer which contains a silicon-phthalocyanine derivative of the formula ##STR1## where R.sup.1 is hydrogen, alkyl, alkoxy, halogen or trialkylsilyl, n is 1, 2, 3 or 4 and A and B are identical or different and independently of one another are each alkyl, halogen or unsubstituted or substituted alkoxy or trialkylsilyloxy.

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