Alkylphthalocyanine near-infrared absorbers and recording/displa

Details Alkylphthalocyanine near-infrared absorbers and recording/displa Alkylphthalocyanine near-infrared absorbers and recording/displa

1992-09-17

1995-08-29

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540140, 540135, C09B 4704

Patent

active

054461413

ABSTRACT:
Near-infrared absorbers which contain phthalocyanine derivatives in which the four benzene rings contained in the molecule independently have 1 to 4 substituents are light and thermal resistant and possess high molar extinction coefficients. Such near-infrared absorbers are useful in optical recording media, near-infrared absorption filters, and liquid crystal display devices.

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patent: 4606859 (1986-08-01), Duggan et al.
patent: 4622179 (1986-11-01), Eda
Cook et al. J. Chem. Soc., Chem Commun. pp. 1086-1087; 1987.
Piechocki et al., J. Amer. Chem. Soc., p. 5246 1982.

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