Antihalation dye for photothermographic recording material and a

Details Antihalation dye for photothermographic recording material and a Antihalation dye for photothermographic recording material and a

1997-05-30

1999-08-31

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430510, 430517, 430617, 430619, 430944, G03C 1498, G03C 1825

Patent

active

059452633

ABSTRACT:
A photothermographic recording material comprising a support; a photo-addressable thermally developable element comprising a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt spectrally sensitized to the infrared region of the electromagnetic spectrum and a binder; and in a hydrophobic layer an antihalation dye according to the general formula (I): ##STR1## wherein R.sup.1 and R.sup.15 independently represent an alkyl group or an alkyl group substituted with at least one fluorine, chlorine, bromine or an alkoxy-, aryloxy- or ester-group; R.sup.2, R.sup.3, R.sup.16 and R.sup.17 independently represent an alkyl group; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.18, R.sup.19, R.sup.20 and R.sup.21 independently represent hydrogen, chlorine, bromine, fluorine or a keto-, sulfo-, carboxy-, ester-, sulfonamide-, amide-, dialkylamino-, nitro-, cyano-, alkyl-, alkenyl-, aryl-, alkoxy- or aryloxy-group; or each of R.sup.4 together with R.sup.5, R.sup.5 together with R.sup.6, R.sup.6 together with R.sup.7, R.sup.18 together with R.sup.19, R.sup.19 together with R.sup.20 or R.sup.20 together with R.sup.21 may independently constitute the atoms necessary to complete a benzene ring; R.sup.8, R.sup.9, R.sup.10 and R.sup.11 independently represent hydrogen, an alkyl group or each of R.sup.1 together with R.sup.8, R.sup.8 together with R.sup.9, R.sup.9 together with R.sup.10, R.sup.10 together with R.sup.11 or R.sup.11 together with R.sup.15 may independently constitute the atoms necessary to complete a 5-atom or 6-atom carbocylic or heterocyclic ring; R.sup.12, R.sup.13 and R.sup.14 independently represent hydrogen, chlorine, bromine or fluorine; and A.sup.- is a fluorinated alkyl or aryl anion in which the degree of fluorination is greater than 70%; a production process therefor and a photothermographic recording process therefor.

REFERENCES:
patent: 4199363 (1980-04-01), Chen
patent: 5258282 (1993-11-01), Kagami et al.
patent: 5322768 (1994-06-01), Delprato et al.
patent: 5541235 (1996-07-01), Busman et al.
patent: 5747412 (1998-05-01), Leenders et al.

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