Alkylphthalocyanine near-infrared absorbers and recording/displa

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

1990-10-01

1991-06-18

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

430270, 430945, 540128, 540135, 540140, G03C 100, C09B 4704, G11B 724

Patent

active

050249266

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.

REFERENCES:
patent: 3764361 (1973-10-01), Kienzle et al.
patent: 4529688 (1985-07-01), Law et al.
patent: 4606859 (1986-08-01), Duggan et al.
patent: 4798781 (1989-01-01), Hirose et al.
patent: 4816386 (1989-03-01), Gotoh et al.

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