Hydrazide compounds useful as co-developers for...

G - Physics – 03 – C

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G03C 1/498 (2006.01) B41M 5/32 (2006.01) G03C 1/06 (2006.01) G03F 1/12 (2006.01)

Patent

CA 2207485

Trityl hydrazides and formyl-phenyl hydrazines are useful as co-developers with hindered phenols in photothermographic and thermographic elements. These co-developers have the formula: R1-(C-O)n-NHNH-R2, R1 represents hydrogen and R2 represents an aryl or substituted aryl group; or, R1 represents hydrogen, alkyl and alkenyl groups of up to 20 carbon atoms; alkoxy, thioalkoxy, or amido groups of up to 20 carbon atoms; aryl, alkaryl, or aralkyl groups of up to 20 carbon atoms; aryloxy, thioaryloxy, or anilino groups of up to 20 carbon atoms; aliphatic or aromatic heterocyclic ring groups containing up to 6 ring atoms; carbocyclic ring groups comprising up to 6 ring carbon atoms; or fused ring or bridging groups comprising up to 14 ring atoms; and R2 represents a trityl group. The photothermographic and thermographic elements in the present invention may be used as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation sensitive imageable medium.

Des hydrazides de trityle et des hydrazines de formyle-phényle sont utiles comme co-révélateurs avec des phénols bloqués dans des éléments photothermographiques et thermographiques. Ces co-révélateurs ont la formule: R<1>-(C=O)n-NHNH-R<2>, dans laquelle R<1> désigne hydrogène et R<2> désigne un groupe aryle substitué ou non; ou R<1> désigne hydrogène, des groupes alkyles et alcényles ayant jusqu'à 20 atomes de carbone; des groupes alcoxyles, thioalcoxyles ou amides ayant jusqu'à 20 atomes de carbone; des groupes aryles, alcaryles ou aralkyles ayant jusqu'à 20 atomes de carbone; des groupes aryloxyles, thioaryloxyles ou anilines ayant jusqu'à 20 atomes de carbone; des groupes hétérocycliques aromatiques ou aliphatiques contenant jusqu'à 6 atomes dans leur noyau; des groupes carbocycliques ayant jusqu'à 6 atomes de carbone dans leur noyau; ou des groupes cycliques fusionnés ou pontés ayant jusqu'à 14 atomes dans leur anneau; et R<2> désigne un groupe trityle. On peut utiliser ces éléments photothermographiques et thermographiques comme masques photographiques sur un support d'images sensible aux rayonnements ultraviolets ou visibles de courtes longueurs d'onde qui est ensuite exposé à ces rayonnements.

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