Near infrared absorber, preparation process therefor and use the

Details Near infrared absorber, preparation process therefor and use the Near infrared absorber, preparation process therefor and use the

1995-12-18

1998-01-06

Tucker, Philip

Compositions

Light transmission modifying compositions

Infrared

540125, 540139, 540140, F21V 904, C09B 4704

Patent

active

057051011

ABSTRACT:
A phthalocyanine near infrared absorber having a broad absorption range in the near infrared region and represented by the following formula (1): ##STR1## wherein each of the groups is defined.

REFERENCES:
patent: 4606859 (1986-08-01), Duggan et al.
patent: 4755012 (1988-07-01), Kojima
patent: 4778128 (1988-10-01), Barlow
patent: 5124067 (1992-06-01), Itoh et al.
patent: 5296162 (1994-03-01), Itoh et al.
patent: 5409634 (1995-04-01), Itoh et al.
patent: 5516899 (1996-05-01), Campbell et al.
patent: 5582774 (1996-12-01), Itoh et al.
Patent Abstracts Of Japan, vol. 013, No. 084, (C-572), Feb. 27, 1989 & JP-63-270765 A (Mitsui Toatsu Chemicals, Inc.), Nov. 1988 *abstract*.

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