Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1997-07-08
2000-01-04
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430264, 430617, G03C 1498
Patent
active
060108436
ABSTRACT:
A photothermographic recording material comprising a support and a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith, photosensitive silver halide spectrally sensitized with a dye and in catalytic association with the substantially light-insensitive organic silver salt and a binder, wherein the photo-addressable thermally developable element further includes a hydrazine compound represented by the formula (I): ##STR1## wherein: Z represents the necessary atoms to close a heterocyclic ring which is either a five-membered ring containing at least two heteroatoms or a six-membered ring, which ring may carry one or more fused-on rings, and which ring must contain a C--H bond permitting oxidative aromatisation to an acyl-onium group by means of a hydride shift or a consecutive 2-electron-proton transfer; each of R.sup.1 and R.sup.2 independently represents a hydrogen atom or an alkali-labile group giving rise to a hydrogen atom on hydrolysis; X is an acyl group selected from the group consisting of CO--R.sup.3, CS--R.sup.4, PO--R.sup.5 R.sup.6 and (CN--R.sup.7)--R.sup.8, wherein each of R.sup.3 to R.sup.8 independently represents alkyl, aryl, cycloalkyl, heterocycloalkyl, heteroaryl, O-alkyl, O-aryl, O-heteroaryl, O-heterocycloalkyl, S-alkyl, S-aryl, S-heterocycloalkyl, S-heteroaryl or N--R.sup.9 R.sup.10, wherein each of R.sup.9 and R.sup.10 independently represents hydrogen, aryl, alkyl, heteroaryl, heterocycloalkyl or acyl as defined for X, and wherein R.sup.5 together with R.sup.6, and R.sup.9 together with R.sup.10 may represent the necessary atoms to close a ring.
REFERENCES:
patent: 5496695 (1996-03-01), Simpson et al.
patent: 5529889 (1996-06-01), Ueda et al.
patent: 5558974 (1996-09-01), Loccufier et al.
Hoogmartens Ivan
Strijckers Hans
Terrell David
AGFA-GEVAERT N.V.
Chea Thorl
LandOfFree
Photothermographic recording material comprising a hydrazine com does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photothermographic recording material comprising a hydrazine com, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photothermographic recording material comprising a hydrazine com will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1071485