(19)
(11) EP 1 258 775 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.07.2006 Bulletin 2006/30

(43) Date of publication A2:
20.11.2002 Bulletin 2002/47

(21) Application number: 02100246.4

(22) Date of filing: 13.03.2002
(51) International Patent Classification (IPC): 
G03C 1/498(2006.01)
A61K 47/00(2006.01)
C08F 214/06(2006.01)
B29L 23/18(2006.01)
C08F 210/16(2006.01)
C09J 151/06(2006.01)
B29K 83/00(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 29.03.2001 EP 01000097

(71) Applicant: AGFA-GEVAERT N.V.
2640 Mortsel (BE)

(72) Inventor:
  • Friedel, Horst, c/o AGFA-GEVAERT
    2640, Mortsel (BE)

   


(54) Photothermographic materials and recording processes therefor


(57) A photothermographic recording material comprising a support and a photo-addressable thermally developable element, the photo-addressable thermally developable element containing a mixture of a substantially light-insensitive silver salt of a monocarboxylic acid and a substantially light-insensitive compound exclusive of silver succinate represented by formula (I):

         AgOOC-R1-COOAg

wherein R1 is a straight chain saturated or unsaturated hydrocarbon group with two or three carbon atoms, optionally substituted with one or more of =O, =S, =CR2R3, an alkyl group, an aryl group, an amino group, a substituted amino group, a cycloalkyl group, a hydroxy group, a thiol group, an alkyl sulphone group, an aryl sulphone group, an alkoxy group, an acyloxy group, a thioalkyl group, a thioaryl, a carbamic ester group, a halogen atom or a-(C=O)R4 group; wherein if R1 is substituted with two substituents selected from the group consisting of alkyl, thioalkyl, substituted amino and alkoxy groups the two substituents may jointly comprise the atoms necessary to complete a carbocyclic or heterocyclic ring; R2 and R3 are independently hydrogen or an alkyl, substituted alkyl, hydroxy or thiol; R4 is a hydroxy, -OAg, alkoxy, alkyl or-NHR6 group; R6 is hydrogen or an alkyl group; an organic reducing agent for the mixture of substantially light-insensitive organic silver salts in thermal working relationship therewith, a photosensitive silver halide in catalytic association with said mixture of substantially light-insensitive organic silver salts, and a binder; a photothermographic recording process therewith.





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