摘要:
A method of making a silver halide emulsion comprising precipitating and chemically sensitizing the emulsion and further comprising adding to the emulsion a fused dihydropyrimidine compound represented by the following formula: ##STR1## wherein X is O, S or Se; R is a substituted or unsubstituted alkyl or aryl group; andZ contains the atoms necessary to form an aromatic group, a heteroaromatic group or a heterocyclic group and a silver halide emulsion made by this method.
摘要:
The present invention relates to a photographic element comprising a silver halide emulsion, the emulsion comprising silver halide grains which contain an alkynylamine dopant. The presence of the alkynylamine dopant imparts to the photographic element the advantageous characteristic of increased sensitivity.
摘要:
The present invention relates to water soluble photographic sensitivity increasing alkynylamine compounds. It also relates to photographic elements containing such compounds.
摘要:
A process is disclosed for preparing a photographic emulsion utilizing an alkynylamine compound as a grain growth modifier. Specifically, the present invention provides a process of preparing a photographic emulsion comprising:introducing silver ions, halide ions and a grain growth modifier having the structure ##STR1## wherein z represents atoms necessary to complete a five to nine-membered heterocyclic ring system, R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen or a lower alkyl of from 1 to 5 carbon atoms, and R.sup.4 represents hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, which may be substituted or unsubstituted, into a dispersing medium containing silver halide seed grains; andmaintaining the dispersing medium containing the seed grains, silver ions, halide ions and grain growth modifier at a pH in the range from about 4.5 to about 10, and a pAg in the range from about 6.0 to about 9.5.Also disclosed is a photographic element comprising a support having incorporated thereon a silver halide emulsion layer, the silver halide emulsion layer comprising silver halide grains internally containing a compound of the structure ##STR2## wherein Z represents atoms necessary to complete a five to nine-membered heterocyclic ring system; R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen or a lower alkyl of from 1 to 5 carbon atoms, with the proviso that at least one of R.sup.1, R.sup.2 and R.sup.3 be a lower alkyl of from 1 to 5 carbon atoms; and R.sup.4 represents hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, which may be substituted or unsubstituted.
摘要:
A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride and a pyrimidine compound represented by Formula I wherein R1, R2, and R3 are each independently a hydrogen atom or a hydroxy, alkoxy, amino, alkylamino, cyanoamino or alkyl group, and R4 is a hydroxy, alkoxy, amino, alkylamino, cyanoamino or alkyl group; provided that at least one of R1, R2, R3, and R4 is a hydroxy or an amino group.
摘要:
This invention relates to an organomercapto Au(I) complex having the formula ##STR1## wherein M is a cationic counterion;SOL is a solubilizing group;A is a substituted or unsubstituted divalent organic linking group;and n is 1 to 4 and wherein the compound is symmetrical.It further relates to a method of manufacturing an organomercapto Au(I) complex comprising reacting an Au(I) complex with an organomercapto ligand and isolating the resulting organomercapto Au(I) complex from the reaction mixture.
摘要:
A photographic element is provided comprising a support having situated thereon a silver halide emulsion layer, the emulsion layer comprising a compound of the formula: Z--SO.sub.2 S--Au(I)--L (I) wherein Z represents an alkyl, aryl, or heterocyclic group; and L represents a thioether, selenoether or telluroether containing ligand.
摘要:
This invention provides a photographic element comprising a support having thereon a silver halide emulsion layer which is greater than about 50 mole % silver chloride, wherein the emulsion layer contains a thiophosphate ester of the structure: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected from the group consisting of an aliphatic, carbocyclic or heterocyclic group.
摘要:
A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride, said emulsion being in reactive association with a sulfur donating compound, and a sulfinate compound represented by Formula (I)Z--SO.sub.2 M.sup.1 (I)wherein Z is a non-metallic aryl, alkyl or heterocyclic group, and M is a cationic counter ion;and wherein the sulfur donor is not a thiosulfonate or a diamino disulfide; and a method of making the emulsion.
摘要翻译:一种卤化银照相元件,其包含大于50摩尔%氯化银的卤化银乳剂,所述乳液与供硫化合物反应结合,和由式(I)Z-SO 2 M 1(I)表示的亚磺酸盐化合物,其中Z 是非金属芳基,烷基或杂环基,M是阳离子抗衡离子; 并且其中所述硫供体不是硫代磺酸盐或二氨基二硫化物; 以及制造乳液的方法。
摘要:
The present invention provides a photographic element comprising a support having thereon a silver halide emulsion layer. The emulsion layer contains an organic compound having a thiosulfonic acid substituent, an organic compound having a sulfinic acid substituent, and an alkynylamine.