Optical recording medium and dipyrromethene metal chelate compou

Details Optical recording medium and dipyrromethene metal chelate compou Optical recording medium and dipyrromethene metal chelate compou

1998-09-08

2000-12-19

Evans, Elizabeth

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Circular sheet or circular blank

428 644, 428 648, 428913, 43027016, 4304951, 430945, 369283, 369288, B32B 302

Patent

active

061625205

ABSTRACT:
A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: ##STR1## wherein R.sub.1 and R.sub.9 are each independently an alkenyl group, an aryl group or a heteroaryl group; R.sub.2 to R.sub.8 are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl, alkoxy, alkenyl, acyl, alkoxycarbonyl, aralkyl, aryl or heteroaryl group having 20 or less carbon atoms; and M is a transition metal.

REFERENCES:
patent: 5433896 (1995-07-01), Kang et al.
patent: 5948593 (1999-09-01), Misawa
Patent Abstracts of Japan, vol. 097, No. 009, Sep. 30, 1997 & JP 09131968 A (TDK CORP.), May 20, 1997 *Abstract*.

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