Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/54—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings condensed with carbocyclic rings or ring systems
  • C07D231/56—Benzopyrazoles; Hydrogenated benzopyrazoles
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
  • C07D231/08—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with oxygen or sulfur atoms directly attached to ring carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/18—One oxygen or sulfur atom
  • C07D231/20—One oxygen atom attached in position 3 or 5
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/18—One oxygen or sulfur atom
  • C07D231/20—One oxygen atom attached in position 3 or 5
  • C07D231/22—One oxygen atom attached in position 3 or 5 with aryl radicals attached to ring nitrogen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/18—One oxygen or sulfur atom
  • C07D231/20—One oxygen atom attached in position 3 or 5
  • C07D231/22—One oxygen atom attached in position 3 or 5 with aryl radicals attached to ring nitrogen atoms
  • C07D231/26—1-Phenyl-3-methyl-5- pyrazolones, unsubstituted or substituted on the phenyl ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/28—Two oxygen or sulfur atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/28—Two oxygen or sulfur atoms
  • C07D231/30—Two oxygen or sulfur atoms attached in positions 3 and 5
  • C07D231/32—Oxygen atoms
  • C07D231/34—Oxygen atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached in position 4
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/44—Oxygen and nitrogen or sulfur and nitrogen atoms
  • C07D231/46—Oxygen atom in position 3 or 5 and nitrogen atom in position 4
  • C07D231/50—Acylated on said nitrogen atom
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
  • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
  • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D231/44—Oxygen and nitrogen or sulfur and nitrogen atoms
  • C07D231/52—Oxygen atom in position 3 and nitrogen atom in position 5, or vice versa
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
  • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
  • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
  • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
  • C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
  • C07D239/60—Three or more oxygen or sulfur atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
  • C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
  • C07D261/06—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members
  • C07D261/08—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
  • C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
  • C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D263/34—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D263/46—Sulfur atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
  • C07D295/16—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms
  • C07D295/18—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms acylated on ring nitrogen atoms by radicals derived from carboxylic acids, or sulfur or nitrogen analogues thereof
  • C07D295/194—Radicals derived from thio- or thiono carboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
  • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
  • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
  • C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
  • C07D307/40—Radicals substituted by oxygen atoms
  • C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
  • C07D333/64—Oxygen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/74—Naphthothiophenes
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
  • C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
  • C07D495/04—Ortho-condensed systems
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
  • C09B23/0008—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain
  • C09B23/005—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain the substituent being a COOH and/or a functional derivative thereof
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
  • C09B23/0008—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain
  • C09B23/005—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain the substituent being a COOH and/or a functional derivative thereof
  • C09B23/0058—Methine or polymethine dyes, e.g. cyanine dyes substituted on the polymethine chain the substituent being a COOH and/or a functional derivative thereof the substituent being CN
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
  • C09B23/14—Styryl dyes
  • C09B23/143—Styryl dyes the ethylene chain carrying a COOH or a functionally modified derivative, e.g.-CN, -COR, -COOR, -CON=, C6H5-CH=C-CN
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C1/00—Photosensitive materials
  • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
  • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
  • G03C5/56—Processes using photosensitive compositions covered by the groups G03C1/64 - G03C1/72 or agents therefor

Definitions

• a light sensitive layer which contains as light sensitive compounds, selected neutrostyryl dyes, as image producing transferable compound, a reducing agent which is transferable at a temperature of between 80 C. and 200 C. and which is converted into non-volatile reaction products when the material is exposed.
• the invention relates to a photographic dry copying process and to a light-sensitive material for carrying out this process.
• Dry photographic processes for producing copies of an original are already ynown.
• the materials used are mainly layers which are sensitive to light or heat. These layers are exposed imagewise to light or heat which initiates a color producing reaction by which the image is formed.
• the produced images are still sensitive to light and stabilization against daylight can generally only be achieved by a very complicated after-treatment
• a light-sensitive layer which contains a lightsensitive compound and an image-producing compound which can be transferred to an image-receiving layer
• the image-producing compound in the exposed areas is converted into a non-transferable compound
• the exposed layer is brought into contact with an image-receiving layer which contains compounds which react with the image-producing compound to form colored compounds
• the layers which are in contact with each other are heated to a temperature at which the imageproducing compound in the unexposed areas of the lightsensitive layer is transferred to the image-receiving layer.
• These processes include e.g. the so-called heat development processes in which light-sensitive materials comprising a silver halide emulsion layer are used which contain a photographic developer substance. After exposure, the material is developed by heating it in contact with an image-receiving layer which contains substances which react with the developer substance to form dyes.
• the de- 3,764,321 Patented Oct. 9, 1973 veloper substance in the unexposed areas of the lightsensitive layer is transferred by heat into the imagereceiving layer, so that a colored image is formed in these areas of the receiving layer.
• the last mentioned process has the disadvantage that the sensitivity of the layers is relatively low and the keeping quality of the material is limited.
• a process for the production of copies by irnagewise exposure of a light-sensitive layer which contains at least one sensitizer and one image-producing compound which can be transferred into an imagereceiving layer the image-producing compound in the exposed areas being converted into a non-transferable compound, and the exposed layer is brought into contact with an image-receiving layer containing compounds which react with the image-producing compound to form colored compounds, and the layers in contact with each other are heated to a temperature at which the image-producing compound from the unexposed areas of the light-sensitive layer is transferred to the image-receiving layer, in which process there is used a light-sensitive layer which contains as sensitizers neutrostyryl dyes of the following general formula, and which contains, as image-producing, transferable compound, a reducing agent which is transferable at a temperature of between and 200 C. and which is converted into non-volatile reaction products on exposure of the material wherein R and R may also, taken together, represent the ring members required to complete an isocycl
• heterocyclic rings and aryl groups may be substituted in any way, e.g. with additional alkyl groups which preferably contain up to 3 carbon atoms, such as methyl or ethyl, or halogen such as chlorine, bromine or iodine, or the trifiuoromethyl group, hydroxyl, or alkoxy, preferably containing up to 3 carbon atoms such as methoxy or ethoxy, alkoxycarbonyl, hydroxyalkyl, alkylthio, aryl such as phenyl, or aralkyl such as benzyl, amino, substituted amino and the like.
• additional alkyl groups which preferably contain up to 3 carbon atoms, such as methyl or ethyl, or halogen such as chlorine, bromine or iodine, or the trifiuoromethyl group, hydroxyl, or alkoxy, preferably containing up to 3 carbon atoms such as methoxy or ethoxy, alkoxycarbon
• the dyes according to the invention are easily obtained by condensation of ketomethylene compounds with the corresponding aldehydes in solvents such as alcohol, pyridine or glacial acetic acid, if desired with the addition of a base such as triethylamine or piperidine.
• Dye 7 2.5 n11. of 50% sodium hydroxide solution are added to a solution of 4.0 g. of o-hydroxy-cinnamic aldehyde-O- acetic acid and 1.0 g. of cyclohexanone in 50 ml. of alcohol. The mixture is left to stand for 30 minutes at room temperature and is then acidified with dilute hydrochloric acid. The dye is removed by suction filtration and recrystallized from chloroform/methanol. 2.4 g., M.P.: 264 to 266 C. (decomposition).
• Dye 26 2.0 g. of 1,3-diethyl-thiobarbituric acid are heated on a steam bath with 1.7 g. of 4-dimethylamino-cinnamic aldehyde in 50 m1. of alcohol for 30 minutes. The dye is filtered 01f after cooling and is recrystallized from chloroform/methanol. 3.3 g., M.P.: 212-214 C.
• the image-producing compounds must meet the following conditions: i
• reducing agents for example are particularly suitable:
• Phenols and naphthols especially benzenes and naphthalenes which contain at least two aromatic hydroxyl groups which may be partly etherified or those which are substituted with a hydroxyl group and an amino group or a substituted amino group, the substitution being in the paraor ortho-position in the case of benzene derivatives, e.g. the compounds listed in Table 1.
• R represents a hydrogen atom, an alkyl or aryl group which may be substituted, for example with lower alkyl or alkoxy groups or halogen,
• R represents a hydrogen atom
• R R 11 and R represent hydrogen, alkyl, aryl or a substituted alkyl or aryl group.
• 3-pyrazo1idones may be prepared by the process described in British patent specification No. 703,669, the end products being obtained by direct condensation of esters of acrylic acid or derivatives thereof with hydrazines. This process is especially suitable for reactions with hydrazine itself.
• the resulting 3-pyrazolidones of oily consistency can be obtained as crystalline compounds by converting them into salts, e.g. hydrochlo rides, sulfates or 1,5-naphthalene disulfonates.
• salts e.g. hydrochlo rides, sulfates or 1,5-naphthalene disulfonates.
• the preparation of 4,4-dia1kyl-3-pyrazolidones has been described in US. patent specification No. 2,772,282. In this process, 2,2-dialkyl-B-chloropropionic acid chlorides are reacted with hydrazines. e
• 3-pyrazolidones may be used as free, bases or in the form of their salts.
• the pyrazolin-S-one derivatives are preferably those which contain at least one hydrogen in the 4-position of a 4-aminophe'nylamino group.
• I 1 R is 1) a hydrogen atom, (2) a saturated or olefinically l 5 unsaturated aliphatic group which preferably contains N up to 6 carbon atoms and which may be substituted, N e.g.
• phenyl as in the case of benzyl or phenylethyl groups, with halogen such as chlorine or bromine, or with nitrile, alkoxy, alkoxycarbonyl or anilinocarbonyl, R 1s (l) a hydrogen atom, (2) a saturated or olefinically (3) an aryl group, especially a group f the phenyl Unsaturated ahphatlc p, Preferably eontelmng P series, the aryl ring being itself substituted if desired, to 6 Carbon m Whleh group y e sueslltutedy e.g.
• alkyl or alkoxy which preferably contains up Wlth p y as In the benzyl group, nltnlegmups, to 3 carbon atoms, nitro or nitrile, (4) amino which h g fluorine, Wlth afmne whlch may be substituted, e.g.
• alkyl which preferably itself be Substituted, alkylated ammo groups
• P contains up to 3 carbon atoms, cycloalkyl, phenyl or cially i lkyl mi the alkylgfeupsin the amino group acyl, especially acyl groups of short chain aliphatic Preferably Containing p to 3 Carbon atoms, an carboxylic acids, (5) alkoxy which preferably contains aryl group, especially a group of the phenyl series, and up to 3 carbon atoms; the aryl ring may itself be substituted, e.g.
• alkyl 15 is a hydrogen atom a 4 i 1 i group or alkoxy preferably containing up to 3 carbon atoms, m 4 dialkylaminophenylamino group nitro, halogen such as fluorine, chlorine or bromine, 13 and 14 may also together represent h i members amino or su s d amine g p alkylated required to complete a S-membered or 6-membered amino groups, (4) a heterocyclic group, e.g. benzocarbocyclic or heterocyclic i thiazolyl or (5) cycloalkyl such as cyclohexyl 0r cyclopentyl; Suitable compounds are shown 1n the following table.
• R is (l) a hydrogen atom, (2) a saturated or olefinically unsaturated aliphatic group which preferably contains up to 6 carbon atoms and which may itself carry substituents, e.g. phenyl as in the case of a benzyl or phenylethyl group, halogen such as fluorine, chlorine or bromine, alkoxycarbonyl, hydroxyl or alkoxy, (3) an aryl group, especially a group of the phenyl series, the aryl ring being substituted if desired, e.g.
• pyrazolin-S-one derivatives are prepared by methods known from the literature. Reference may be made e.g. to the monograph by R. H. and Wiley Pyraz olones, Pyrazolidones and Derivatives (1964) and to German patent specification No. 1,155,675.
• the light-sensitive layers contain at least one sensitizer in quantities of 10 to 300 mg./m. and one or more image-producing compounds in quantities of 0.02 to 0.5 g./m.
• concentration has been found to be suitable, although quantities outside this range may, of course, be used. The concentration depends mainly on the requirements of the particular reproduction process.
• sensitizers and chain aliphatic radicals containing up to 3 carbon atoms, image-producing reducing agents can be found by simple tests. Suitable tests for this purpose will be described hereinafter.
• the choice of solvent and of the binding agent used for preparing the light-sensitive layer is also important for obtaining optimum results.
• Particularly suitable combinations of components for any particular purpose can be determined by the usual experiments commonly known in the art.
• sensitizers and image-producing compounds may be suspended or dissolved in solvents and mixed with a binding agent and applied in this form to the layer support.
• the usual natural or synthetic film-forming polymers are suitable as binding agents for the light-sensitive layer, e.g. proteins, especially gelatin, cellulose derivatives, especially cellulose ethers, cellulose esters or carboxymethyl cellulose, alginic acid and its derivatives, starch ether or gallactomannane, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl chloride, copolymers of vinyl chloride and vinyl acetate, polyvinyl acetate or completely or partly saponified polyvinyl acetate, or copolymers of vinyl acetate, for example with olefines such as ethylene or propylene and copolymers of monomers of acrylicor methacrylic acid or derivatives thereof such as esters, amides or nitriles, etc.
• proteins especially gelatin, cellulose derivatives, especially cellulose ethers, cellulose esters or carboxymethyl cellulose, alginic acid and its derivatives, starch ether or gallactomannane,
• the light-sensitive layers may be used as self-supporting layers or applied to a support.
• Suitable supports are e.g. paper, especially baryta-coated paper and cellulose esters, e.g. cellulose triacetate, polyesters, especially those based on ethylene terephthalate, glass etc.
• the image receiving material advantageously consists of an image receiving layer applied to a suitable support.
• Substantially the same substances as those described above for the light-sensitive material are suitable as binding agent for the image receiving layer or as the layer support.
• the image receiving layer contains compounds which should be insensitive, or as restricted as possible in their sensitivity, to visible light under the conditions of the process of the invention, and which react with the transferred image producing compounds to form colored products. Numerous compounds have been found suitable for this purpose. Chemically, these compounds belong to a wide variety of classes so that their systematic chemical classification is not possible. However, suitable compounds or suitable combinations of an image producing compound arranged in the light-sensitive layer and of the reactant for the image-forming reaction in the image receiving layer can be sufiiciently clearly defined by simple laboratory tests customarily employed in the art. Thus, for example, the two reactants must react when briefly heated for a few seconds to a temperature of between about 80 and 200 C. to form a stable dye.
• a second test must then be carried out to choose suitable image producing compounds.
• the purpose of this test is to show whether the image producing compound will react sufficiently rapidly in the presence of the sensitizer on exposure to light, so that, when the mixture is heated after it has been exposed, it will not produce a colored compound with the reactant in the image receiving layer.
• the following classes of compounds are examples of suitable compounds in the image receiving layer for reaction with the image transferred from the light-sensitive layer.
• Heavy metal compounds especially compounds of metals of Groups Illa to Va and Groups Ib, IIb, VII) VIII), and VIII of the Periodic System of Elements, e.g. compounds of the following heavy metals: cadmium,
• salts of these metals with long chained aliphatic, carboxylic acids are especially suitable, e.g. nickel stearate, cobalt palmitate, iron stearate, and the addition compound of bismuth nitrate with amines such as triethanolamine. It is found to be especially suitable to use silver compounds which are substantially insensitive to light under the conditions of the copying process according to the invention, e.g. the silver salts described in U.S. Pat. No. 3,330,663 i.e.
• the image consists of the particular metal and/or a reaction product of the transferred image producing compound.
• the image-receiving layer may also contain oxidizing agents and dye components which undergo an imagewise reaction of oxidative coupling with the transferred image-producing compound to yield dyes, e.g. compounds which in their oxidized form produce colored coupling products when reacted under oxidizing conditions with e.g. pyrazolin-S-one compounds.
• Suitable reactants are e.g. oxidation products of p-phenylene diamines or their derivatives which form azomethine dyes with the pyrazolin-S-one compounds, as known from conventional color photography.
• Diazonium salts which react with the transferred reducing agents, eg the aminophenols, aminonaphthols or pyrazolin-S-one compounds, to form a colored product.
• this reaction corresponds to the reaction employed in the known photographic diazotype process.
• Leucophthalocyanines are also suitable reactants for the reaction which produces the image dye.
• Leucophthalocyanines which have not or could not be prepared from finished phthalocyanines are known as phthalocyanine precursors. This term is used, for example, in the article by B. R. A. Brooks, J. G. Burt, B. F. Skiles and M. S. Whelen, J. Org. Chem. 24, p. 383 (1959).
• the term phthalocyano-rnetal complexes is used for the same type of materials for which in the present context the term leucophthalocyanines is used.
• Leucophthalocyanines are colorless or only slightly colored products in which the phthalocyanine structure is already completely formed, and which can be converted into phthalocyanines by a reduction process. In this reduction process, constituents which the leucophthalocyanine molecule contains in addition to phthalocyanine may also be split oil.
• leucophthalooyanines may be prepared e.g. by first preparing a phthalocyanine, e.g.
• Leucophthalocyanines which contain metal are more suitable for this reaction because those which are free from metal are relatively unstable.
• the highly stable and only slightly colored leuco cobalt phthalocyanines are especially suitable.
• the leuco cobalt phthalocyanines which are described in Angewandte Chemie, 68, p. (1956), e.g. the phthalocyanine cobalt ethylene diamine complex.
• ethyl ene diamine other diamines or polyamines may also be used as ligands, for example propylene diamine-(1,2), and -(1,3), monoethylpropylene diamine-(1,3), hydroxyethylethylene diamine, N methyl-N-fl-hydroxyethylpropylenediamine, N,N' diethylethylene diamine, N,N-di- (fl-aminoethyl) ethylene diamine, N,N'-di-(/3-aminoethyl)-ethylene diamine or N,N di [fi-(B-aminoethyl ⁇ amine or also monoamines such as 3-(2-ethylhexyloxy)- propylamine-(l) or stearylamine.
• the solubility properties of the leuco-Co-Pc depend on the type of amine used in the molecule.
• the reactants in the image-receiving layer for a reaction to produce dyes can be eliminated altogether.
• image--producing compounds for example phenols or naphthols, which yield colored compounds spontaneously when heated or in the presence of sufficient atmospheric oxygen.
• plain, uncoated paper may be used as image-receiving material.
• the image receiving layers may also contain other additives which advantageously alfect the color tone, contrast and stability, etc. of the copy.
• Image receiving layers of this type are already known and have been described e.g. in US. Pat. No. 3,335,006 and Belgian Pat. No. 609,057.
• the image-receiving layers may also contain white pigments such as zinc oxide, silicon dioxide or titanium dioxide as fillers, to improve the whites and to control the tendency of the layers to stick, and they may also contain terpene resins and organic acids to improve the stability in storage.
• Image-receiving layers of this type have been described in US. patent specifications Nos. 3,074,- 809 and 3,107,174.
• the color tone of the images obtained can be adjusted e.g. with compounds of the 1-(2H)-phthalazinone series. Toners of this type have been described in US. patent specification Nos. 3,080,254 and 3,446,648. Additives which accelerate the reduction reaction in the image receiving layer have also been found advantageous. Suitable compounds for this purpose are e.g.
• the light-sensitive layers according to the invention may be exposed with the usual sources of light used in reproduction work, such as mercury lamps, iodine quartz lamps or incandescent lamps.
• the spectral sensitivity of the light-sensitive material depends on the nature of the dye used or of the combination of dye and reducing image producing compound.
• Exposure may either contact exposure, optical exposure or reflection exposure.
• Transfer of the image-producing compounds from the unexposed areas of the light-sensitive layers to the imagereceiving layer is carried out at temperature of between 80 and 200 C. Heating may be carried at e.g. by passing the exposed light-sensitive layer in contact with the imagereceiving layer over hot plates or rollers or by irradiation with infra-red light. The most advantageous temperature and heating time depends, of course, on the nature of the image-producing compound and can easily be determined by a few simple tests.
• the material according to the invention may also be modified in that the image-receiving layer and the lightsensitive layer may both be applied to the same support.
• a transparent layer support on which there is first applied the image-receiving layer, e.g. a layer which contains silver behenate dispersed in a copolymer of styrene and isobutylene, and on this image-receiving layer there is applied the light-sensitive layer, e.g. an ethyl cellulose layer containing the sensitizer and reducing agent.
• the sensitivity of these light-sensitive layers can be advantageously increased and/or extended to other spectral regions, which will depend on the absorption of the compounds according to the invention.
• the layer is dried in the usual manner.
• the image-receiving material is prepared by grinding the following components in a ball mill for 6 hours:
• the layer contains about 0.2 g. of silver per m? in the form of silver behenate.
• the light-sensitive material is exposed behind a /2 step wedge for 5 minutes to a 1000 watt iodine quartz lamp from a distance of 30 cm.
• the exposed layer is then brought into contact with the image-receiving layer and heated for 10 seconds to a temperature of C. or treated in a commercial heat development apparatus.
• Dye No. 33 the dyes listed in Table 4 below may be used.
• the layer is dried in the usual manner.
• the light-sensitive material is exposed through a positive transparent original copy to a normal 1000 watt incandescent lamp (tungsten filament) at a distance of 5 to cm. for 30 seconds.
• a normal 1000 watt incandescent lamp tungsten filament
• a text printed on ordinary paper may be used as original. Exposure must be in this case to reflected light and times of between and 25 seconds are required for this under otherwise the same conditions.
• the exposed layer is then brought into contact with the image-receiving layer described in Example 1 and the layers are heated to a temperature of 125 C. to 140 C. for 5 to seconds or treated in a commercial heat development apparatus.
• silver behenate which is used here in the image-receiving layer
• other silver compounds e.g. silver stearate or silver salts of octadecylmercaptoacetic acid, 2-octadecylmercapto-S-carboxymethylmercapto-1,3,4-thiadiazole (as described in US. patent specification No. 3,330,663), etc.
• the choice of suitable compounds dependsron the purposev for which they are to be used and the required color of the image.
• a light-sensitive layer is prepared from a solution of:
• the solution is applied to a layer support of glassine paper and dried in the usual manner.
• Image-receiving layer The following casting solution is applied to a layer support of baryta paper:
• Example 2 Processing The material is processed as described in Example 2. A positive red image of the original on a grey background is obtained.
• Image-receiving material 50 mg. of a leuco cobalt phthabcyanine stearylamine complex prepared by the method described below are dissolved in 40 g. of a 1.5% polyvinyl acetate solution in acetone and 26 g. of a 4% cellulose acetate solution in acetone, cast on paper and dried.
• T he leuco CoPc used was prepared as follows:
• Image-receiving material An image-receiving material is prepared from:
• Image-receiving material 1 g. of bismuth nitrate is shaken in a ball mill for 6 hours with 7 40 g. of a 1.5% solution of polyvinyl acetate in acetone,
• the mixture is cast on paper and dried.
• EXAMPLE 7 Light-sensitive material as in Example 1. The material is processed as described in Example 2 but the imagereceiving material used is ordinary writing paper. A positive cyan image of the original is obtained.
• Image-receiving material Ammonia is added to a solution of 5 g. of copper(III) chloride in 75 ml. of H until the precipitate formed redissolves and 30 ml. of aqueous polyvinyl alcohol are then added and the solution is cast on paper and dried.
• the material is processed as described in Example 2. A grey-green positive image of the original is obtained.
• EXAMPLE 9 When used in combination with other dyes, e.g. erythrosine which is sensitive at 540 nm., the dyes listed in the following table extend the sensitivity of the lightsensitive material to the blue or red region of the spectrum.
• other dyes e.g. erythrosine which is sensitive at 540 nm.
• a set of interference filters was used to determine the spectral sensitivity of the light-sensitive material.
• the filters are permeable to the following wavelengths: 350 nm., 390 nm., 405 nm., 435 nm., 480 nm., 505 nm., 515 nm., 540 nm., 550 nm., 570 nm., 590 nm. and 605 nm.
• the light-sensitive material is exposed behind the interference filters to a 1000 watt iodine quartz lamp from a distance of 30 cm. for a length of time varying from 5 to 30 minutes according to the dye.
• the exposed material is brought into contact with the image-receiving layer described in Example 1 and processed in a conventional commercial heat development apparatus.
• a process for producing copies of a graphic original comprising placing in close contact a first layer of a material containing a sensitizer which renders the layer sensitive in a visible spectral range and an image-producing compound capable of being transferred from the first layer and being characterized as readily forming a nontransferable product upon exposure, with a second receiving layer of a material containing a compound which reacts with transferred image-producing compound to form colored compounds and being characterized as insensitive to the visible spectral range, exposing the first layer to image-forming light in the said spectral range, for a time sufficient to form non-transferable products of said imageforming compounds in exposed areas, heating of the layers in contact with each other at a temperature of between -200" C.
• R and R may together represent the ring members required to complete an isocyclic or heterocyclic keto methylene ring or they may represent the keto methyl- 19 ene compounds represented by the following structural formulae:
• sensitizers used are neutrostyryl dyes of the N,N- disubstituted thiobarbituric acid series.
• a process according to claim 2 characterized in that the following compound is used as sensitizer:
• a process according to claim 1 characterized in that a l-hydIoxy-4-alkoxynaphthalene is used as image-producing compound.
• a process according to claim 8 characterized in that 1-hydroxy-4-methoxynaphthalene is used as image-producing compound.
• a process according to claim 1 characterized in that 1,2,3,4-tetrahydro-S-hydroxyquinoline is used as imageproducing compound.
• a process according to claim 11 characterized in that 1-phenyl-4-methyl-3-pyrazolidone is used as imageproducing compound.
• R (l) hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) a heterocyclic group or (5) cycloalkyl;
• R (l) hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) a heterocyclic group, (5) cycloalkyl, (6) hydroxyl, (7) amino or (8) an alkoxycarbonyl group;
• R (1) hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) amino or (5) alkoxy;
• R hydrogen or a 4-aminophenylamino group
• R and R represent the ring members required for completing a carbocyclic or heterocyclic ring
• a process according to claim 14 characterized in that an image-receiving layer which contains silver salts of a long chained aliphatic carboxylic acid having 8 to 24 carbon atoms is used.
• a process according to claim 14 characterized in that an image-receiving layer which contains a silver salt of an aliphatic carboxylic acid which is substituted with a thioether group is used.
• a process according to claim 1 characterized in that an image-receiving layer which contains a toner is used.
• a process according to claim 1 characterized in that an image-receiving layer which contains a sterically hindered phenol is used.
• a light-sensitive photographic material wherein a light-sensitive layer contains a sensitizer and an imageproducing compound which is transferable at temperatures of between and 200 C., the image-producing compound being converted into a non-transferable reaction product in the exposed areas in the presence of the sensitizer, the improvement which comprises as sensitizer, a neutrostyryl dye of one of the following formulae:
• a material according to claim 22 characterized in that it contains, as sensitizers, neutrostyryl dyes of the N,N'-disubstituted thiobarbituric acid series.
• a material according to claim 22 characteried in that it contains the following compound as sensitizer:
• a material according to claim 22 characterized in that it contains a l-hydroxy-4-alkoxynaphthalene as imageproducing compound.
• a material according to claim 22 characterized in that it contains 1 hydroxy 4 methoxynaphthalene as image-producing compound.
• a material according to claim 22 characterized in that it contains 1,2,3,4-tetrahydro-8-hydroxyquinoline as image-producing compound.
• a material according to claim 22 characterized in that it contains a 3-pyrazolidone derivative as image-producing compound.
• a material according to claim 32 characterized in that it contains 1-phenyl-4-methyl-3-pyrazolidone as image-producing compound.
• a material according to claim 22 characterized in that it contains, as image-producing compound, a pyrazolin-5-one compound of the following formula:
• R (1) hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) a heterocyclic group or (5) cycloalkyl;
• R 1 hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) a heterocyclic group, (5) cycloalkyl, (6) hydroxyl, (7) amino or (8) an alkoxycarbonyl group;
• R (1) hydrogen, (2) a saturated or olefinically unsaturated aliphatic group, (3) aryl, (4) amino or (5) alkoxy;
• R hydrogen or a 4aminophenylamino group
• R and R may also represent the ring members required to complete a carbocyclic or heterocyclic ring.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
• Heat Sensitive Colour Forming Recording (AREA)
• Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5780935

Family Applications (1)

Country Status (7)

Cited By (5)

Families Citing this family (7)

• 1970
  • 1970-08-28 DE DE19702042663 patent/DE2042663A1/de active Pending
• 1971
  • 1971-08-24 CA CA121,183A patent/CA972611A/en not_active Expired
  • 1971-08-25 BE BE771730A patent/BE771730A/nl unknown
  • 1971-08-25 US US00174927A patent/US3764321A/en not_active Expired - Lifetime
  • 1971-08-26 CH CH1253771A patent/CH586918A5/xx not_active IP Right Cessation
  • 1971-08-27 GB GB4024371A patent/GB1342971A/en not_active Expired
  • 1971-08-27 FR FR717131206A patent/FR2103589B1/fr not_active Expired

Also Published As

Similar Documents