Tetraazaporphyrins and optical recording medium

Details Tetraazaporphyrins and optical recording medium Tetraazaporphyrins and optical recording medium

1989-08-18

1991-07-16

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

430270, 430945, 540123, 540124, 540125, 540128, G11B 724, C09B 4700

Patent

active

050324950

ABSTRACT:
An optical recording medium contains tetraazaporphyrins of the formula ##STR1## where L.sup.1, L.sup.2, L.sup.3 and L.sup.4 are each independently of the others the radical of a bicyclic aromatic heterocycle containing 1 to 3 identical or different heteroatoms selected from the group consisting of N, O and S, which may be substituted, and

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CRS Press, Inc., Boca Raton, Fla. 1983, F. H. Moser et al., "The Phthalocyanines".
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Z. Chem., vol. 26, pp. 217-218, 1986.
Patent Abstracts of Japan, vol. 11, Nr. 158(M-591)(2605), May 22, 1987; & JP-A-61 291 187 (Mitsubishi Chem. Ind. Ltd.) 20, 12, 1986.

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