摘要:
For the production of cyan and magenta images by the dye diffusion transfer process dye-providing compounds of the formula I are suitable ##STR1## in which A=an oxydizable carrier residue containing a diffusion-preventing radical;n= 0 or 1;P=a monocyclic aromatic radical;M=hydrogen, halogen, alkyl sulfonyl, aryl sulfonyl or sulfamoyl;Q=acylamino;R.sup.1 =hydrogen or a hydrolyzable radical.
摘要翻译:为了通过染料扩散转移法生产青色和品红色图像,式I的提供染料的化合物是合适的,其中A =含有扩散阻止基团的可氧化载体残基; n = 0或1; P =单环芳族基团; M =氢,卤素,烷基磺酰基,芳基磺酰基或氨磺酰基; Q =酰氨基; R1 =氢或可水解基团。
摘要:
Non-diffusible dye-providing components which may be used in association with a silver halide emulsion layer and on development yield diffusible yellow dyes of improved light fastness are cyanalkyl aminoazo dyes of the formula ##STR1## in which A.sup.1 represents oxidizable carrier residue;D represents a heterocyclic or carbocyclic aromatic residue completing an azo dye; and1, m and n are 0 or 1 such that1+m+n=1;and r represents an integer of from 1 to 4.
摘要翻译:可以与卤化银乳剂层结合使用的非扩散性染料提供组分和显影产生具有改善的耐光性的可扩散的黄色染料是式(I)的氰基烷基氨基偶氮染料,其中A1表示可氧化的载体残基 ; D表示完成偶氮染料的杂环或碳环芳香族残基; 1,m和n为0或1,使得1 + m + n = 1; r表示1〜4的整数。
摘要:
Non-diffusible dye-providing compounds for the dye diffusion transfer process yielding color images of wanted absorption characteristics and improved light fastness correspond to the formula(A).sub.n -P-N=N-B-(A).sub.1-nin whichA represents an oxidizable organic carrier residue which may be attached through a connecting member X and containing a group which confers diffusion resistance, from which carrier residue, either in its oxidized or in its unoxidized form, a part is split off together with the group which confers diffusion resistance under alkaline photographic development conditions, a diffusible azo dye represented by the formula P--N.dbd.N--B being released imagewise at the same time;P represents a monocyclic, carbocyclic aromatic group;B represents a bicyclic, carbocyclic aromatic group which carries a sulphonamide group in the p-position to the azo group;N=0 or 1.
摘要:
The process for the development of color photographic images with an aqueous alkaline color developer mixture comprising methyl-p-dialkylaminoaniline derivates. The process provides brilliant color photographic images avoiding coloration of the support and color fog even when processing at high temperatures.
摘要:
Useful non-diffusible dye-giving compounds for the photographic dye diffusion transfer process are dye sulfonamides derived from enolamines or endiamines or tautomers thereof. The dye-giving compounds are oxidized by developer oxidation products and subsequently split under the conditions of alkaline development to release diffusible dyes. The compounds are of the following formula ##STR1## in which X is a dye moiety and R.sub.1, R.sub.2 and R.sub.3 have meanings given hereinafter.
摘要:
Positive images including color images are obtained by imagewise exposure and development of a material which comprises at least one light-sensitive silver halide emulsion layer which contains an unfogged direct-positive silver halide emulsion, when the development is carried out in the presence of a fogging agent of the formula ##STR1## wherein the symbols are defined as hereinafter. The fogging agent is preferably contained in a layer of the material and more preferably in the unfogged direct-positive silver halide emulsion layer. For the production of color instant images the material may also contain non-diffusible color providing compounds capable in their oxidized form of being split under alkaline photographic development conditions to release diffusible dyes.
摘要:
A color photographic material having a silver halide emulsion layer and containing a thioether compound which is reactable on chromogenic development thereby releasing a diffusible substance which inhibits the development of the silver halide.The thioether compound is a homophthalimide containing a removable mercapto group containing moiety in the 4-position and its nitrogen in the 2-position atom being a tertiary nitrogen.
摘要:
Non-diffusible dye-providing compounds for the dye diffusion transfer process yielding yellow to red color images of wanted absorption characteristics and improved light fastness correspond to the formula(A.sup.1).sub.n -- D -- N .dbd. N -- Py -- (A.sup.1).sub.1-nin whichA.sup.1 represents an oxidizable organic carrier residue which may be attached through a connecting member X and containing a group which confers diffusion resistance, from which carrier residue, either in its oxidized or in its unoxidized form, a part is split off together with the group which confers diffusion resistance under alkaline photographic development conditions, a diffusible azo dye represented by the formula P--N.dbd.N--B being released imagewise at the same time;D represents a heterocyclic or carbocyclic aromatic group;Py represents a pyridine or 1,2-dihydropyridine group which is attached to the azo group through its 3-position and carries an amino or hydroxyl group in its 6-position;N = 0 or 1.
摘要:
In the photographic dye-diffusion transfer process use is made of dye-giving compounds, which are non diffusing in photographic binder layers, and which during development if oxidized imagewise in accordance with the silver halide developed are split owing to the alkali of the developer composition to release diffusing dyes, which are transferred to an image-receiving layer. The dye-giving compounds have the formulaY--NH--Ar--NH--SO.sub.2 --Xar represents an arylene radical such that the group Y--NH-- is attached to the group --NH--SO.sub.2 --X through a chain of n(n=1,2,3, or 4) vinylene groups which are part of the arylene radical;X represents the radical of a dye or dye precursor;Y represents a --COR or --SO.sub.2 R radical; andR represents an alkyl, aryl or heterocyclic group and can constitute part of a second dye moiety.
摘要:
A method is described for the preparation of a 1-substituted 4-methyl-2-pyrazolin-5-one by catalytic hydrogenation under pressure and simultaneous methylation by means of paraformaldehyde of the appropriate 1-substituted 2-pyrazolin-5-one in a medium of an inert organic solvent comprising ammonium acetate.