Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing
Patent
1994-03-16
1995-03-14
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Antihalation or filter layer containing
430510, 430517, G03C 106
Patent
active
053976908
ABSTRACT:
An improved dye class and preparation procedure therefore is provided. The dyes can be prepared from a Stenhouse salt which is economical and can be prepared from readily available reagents. The improved dye is particularly suited for use as an antihalation dye in photographic elements and does not impart deleterious properties thereto. These and other properties are provided in a dye represented by: ##STR1## wherein the constituents have defined values.
REFERENCES:
patent: 3793313 (1974-02-01), Rillaers et al.
patent: 4839265 (1989-06-01), Ohno et al.
patent: 4876181 (1989-10-01), Proehl et al.
patent: 5017707 (1991-05-01), Berneth et al.
patent: 5149619 (1992-09-01), Mihara et al.
Fabricius Dietrich M.
Schelhorn Thomas
Brammer Jack P.
E. I. Du Pont de Nemours and Company
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