摘要:
A method has been described of preparing a photosensitive emulsion comprising tabular silver halide grains rich in silver bromide, having {100} major faces and an aspect ratio more than 1.5, wherein at least 50% of the projected area of all grains is provided by said {100} tabular grains, said method comprising the step of running in a reaction vessel an aqueous silver salt solution and an aqueous alkali halide solution rich in alkali bromide, characterized in that before starting running said reaction vessel comprises in an aqueous solution of gelatin an amount of amino-modified polyvinyl alcohol as an aqueous soluble polymer.
摘要:
A film which comprises at least one active compound and is at least partly degraded under the conditions of the site of action is suitable as a new presentation form of active compounds, in particular those having a pharmacological or biocidal action.
摘要:
An ink jet system comprising a recording material and at least one colored ink to be applied to the recording material by means of an ink jet nozzle, characterized in that at least either the material or the at least one colored ink contains at least one water-soluble compound of general formulae (I) or (II): ##STR1## wherein R.sub.1, Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, Z.sub.5, Z.sub.6, X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5, R.sub.2, R.sub.3, R.sub.4 and n have the meanings given in the description, are distinguished by improved protection of the ink jet dyes from light.
摘要:
A color photographic recording material with at least one silver halide emulsion layer and a color coupler associated with that layer, which contains in the silver halide emulsion layer or in an adjacent non-photosensitive binder layer a combination of a color coupler and a compound corresponding to general formula (I) or (II): ##STR1## in which R.sub.4 is the residue of a polymer produced by polycondensation andR.sub.1 to R.sub.3, m and n are as defined in the specification, ##STR2## in which R.sub.4 is as defined above and L.sub.1, L.sub.2, X, R.sub.5 to R.sub.11, p, q and r are as defined in the specification,is distinguished by improved stability of the image dyes produced from yellow couplers.
摘要:
Color images with improved Dmin/Dmax-relationship can be obtained from color photographic recording materials comprising color providing compounds in association to silver halide emulsion layers and comprising an additional binder in said silver halide emulsion layers or in adjacent non-lightsensitive layers a polymer having recurring structural units of a polymerized monomer which contains at least one urethane and/or urea group.
摘要:
A photographic recording material consisting of a layer support, at least one light-sensitive silver halide emulsion layer containing gelatine and optionally other gelatine-containing layers which are not light-sensitive contains in at least one of the layers a cross-linked polymer latex on the basis of a low molecular weight carboxylic acid amide. The latex may advantageously be used as a binding agent or for introducing residues of photographically active substances into a photographic layer.
摘要:
Silver halide emulsions with tabular grains showing increased aspect ratio are produced by adding to the precipitiation vessel a compound of the formula I: ##STR1## in which R.sub.1 means H or optionally substituted alkyl, aralkyl or cycloalkylR.sub.2 means H or optionally substituted alkyl, aryl or aralkyl or a polymer chainR.sub.3 means H, OH, alkyl, aryl, aralkyl, halogen, NHR.sub.4, O--CO--R.sub.4, O--CO--NHR.sub.4 or an optionally substituted oxazoline ringR.sub.4 means optionally substituted or alkyl, aralkyl or arylm means 2 or 3,n means 2 to 10,000,or a compound of the formula II ##STR2## in which R.sub.1, R.sub.3, n and m have the meaning stated above and may be identical or different andR.sub.5 means optionally substituted alkene, arylene, aralkene or a polyaddition, polycondensation or polymerisation chain.
摘要:
A color photographic material which contains in at least one blue-sensitive layer a yellow coupler and a compound of the formula (I) ##STR1## in which R.sub.1 means hydrogen or alkyl,R.sub.2 means hydrogen or alkyl,R.sub.3 means hydrogen or alkyl,1 means 1 to 20X ##STR2## or cycloalkene, R.sub.4 means hydrogen or alkyl,R.sub.5 means hydrogen or alkyl andn means 1 to 6,shows improved light-stability of the yellow dye obtained from said yellow coupler by exposure and processing.
摘要:
Polymeric color couplers with repeating units of a polymerized monomer K of formula I ##STR1## with R.sup.1 H or an optionally substituted alkyl group;R.sup.2, R.sup.3, R.sup.4 (identical or different) H, Cl, --COOH or optionally substituted alkyl groups; andX H or a group releaseable by coupling provide, during chromogenic development: magenta dye images with high dye yield and advantageous absorption level.
摘要:
Compounds corresponding to Formula I are suitable as light stabilizers for the image dyes produced from colour couplers by chromogenic development. They are also suitable as oil formers for the colour couplers. In a colour photographic recording material, they are preferably used in combination with a pyrazoloazole coupler and associated with a light-sensitive silver halide emulsion layer. ##STR1## In Formula I, R.sup.1 denotes H, a group which can be split off under alkaline conditions, alkyl or aryl;R.sup.2 denotes OH, alkyl, aryl, alkoxy or ##STR2## R.sup.3, R.sup.4, R.sup.5 and R.sup.6 denote H, OH, COOH, SO.sub.3 H, SO.sub.2 H, alkyl, aryl, alkoxy, sulphonyl, sulphamoyl, acylamino or ##STR3## and at least one of the groups R.sup.2, R.sup.3, R.sup.4 R.sup.5 and R.sup.6 is a group of the formula ##STR4## A denotes an alkylene group having 1-6 carbon atoms, n stands for 0 or 1,R.sup.7 denotes H or an optionally substituted alkyl group,R.sup.8 denotes the group of a polymer produced by polycondensation, in particular a polyester, polyether, polycarbonate, polyurethane or polyester polyurethane,R.sup.1 and R.sup.3 may form a 5-membered or 6-membered ring, in which case R.sup.2 =OH or alkoxy, andR.sup.2 and R.sup.4 may form a 5-membered or 6-membered carbocyclic ring.