Classifications

• • 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
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/32—Colour coupling substances
  • G03C7/34—Couplers containing phenols
  • G03C7/344—Naphtholic couplers
• • 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
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/32—Colour coupling substances
  • G03C7/3212—Couplers characterised by a group not in coupling site, e.g. ballast group, as far as the coupling rest is not specific

Definitions

• Patentemfict. 1942 ED STATES. PATENT-ferries "2.29am v 7' NDNDIFFUSING SULPHONAMIDE COUPLER FOB PHOTOGRAPHY Arnold Weissberger, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N. Y., a corporation or New'Jersey No Drawing. Application. August 22, 1940, Serial No. 353,669. 151 Great 31-min August 24, 1939 8 Claims. (01. 95-6)
• This invention relates to photographic color forming compounds and particularly to non-diffusing coupler compounds containing sulphonamide groups for incorporation in photographic emulsion layers.
• Color forming compounds which react with the development product of aromatic amino developing agents to form colored images on photographic development have been the subject of numerous prior patents.
• the dyes formed in this way are insoluble in water and in the ordi-' nary photographic developing and fixing baths although the silver images formed simultaneously with them duringthe photographic development may be removed from the photographic layer to leave pure dye images in the layer.
• a coupling component or coupler Such a compound which is employed in conjunction with the developing agent for the silver and which couples with the development product of the developer during photographic development is referred to herein as a coupling component or coupler. ,When these coupling components are incorporated in the photo-.
• R is an aryl radical such as phenyl or naphthyl which may be substituted but which, may not be a hydroxy substituted aryl radical
• X is an alkyl or phenyl substituted alkyl which may be substituted and Y is an organic substitu- 1 ent such as alkyl or arylradicals.
• the coupler must also contain a group reactive with the oxidation product of the developer
• This group is the reactive methylene orethenol group characteristicof couapler compounds and wil1.be more specifically referred to hereinafter.
• a reac-. tive methylene group it may be contained in the portion' oi the molecule attached either to the sulphur or to the nitrogen atom of the sulphonamide group.
• the reactive ethenol group this group may not be attached directly to the sulphur atom of the sulphonamide but may be attached to the nitrogen atom or to one of the groups attached to the nitrogen atom oi the sulphonamide radical.
• onus-car o -r r-crm couplers according Compound -I is a coupler capable of producing a yellow dye image and is of the type described in Vittum, Peterson and Porter U. 8. Patent No.
• My invention resides in the discovery b-lN-(benryl)-a-naphthalene-sulpbonylaminol-l-naphthol I Ill ' that, by the substitution of'this i'ree hydrogen atom of the sulphonamide group with suitable organic radicals, the valuable properties of the I on- 2,4-dichloro-6-[N-(benzyn-p-nlphthaleno-sulphonylaminol-lnlphthol on.
• These compounds are usually used in the salt form, such as the hydrochloride or the sulphate, which are more stable than the amines themselves.
• Suitable compounds are diethyl-p-phenylenediamine hydrochloride, men-- omethyl-p-phenylenediaminehydrochloride, dimethyl p phenylenediaminehydrochloride a n d dimethyl-p-phenylenediamine sulphate.
• the paminophenols and their substitution products may also be used where the amino group is unsubstituted. All of these compounds have an unsubstituted amino group which enables the oxidation products of the developer to couple with I the color forming compounds to form a dye image.
• the other substituent onthe nitrogen atom is limited to alkyl, phenyl substituted alkyl or benzyl radicals.- This is the substituent which controls the solubility of the coupler and produces the property of non-diffusibility ingelatin.
• This substituent may be a simple-methyl or ethyl radical or a phenyl substituted alkyl radical such as benzyl or v-phenylpropyl. These radicals obviously may be considered phenyl substituted alkyl radicals, benzyl being a phenylvsubstituted methyl radical and q-phenylpropyl being a phenyl substituted propyl radical.
• the coupler must contain the functional or reactive group common to color forming compounds which react with primary aromatic amino developing-agents.
• This reactive group takes the form of a reactive methylene or reactive etlrenol group.
• reactive methylene we mean a CH: group which is reactive in the coupling proces's.j
• the cm group is usually present betweentwo negative centers as in'the groups or -CO-CH2-CN.
• the aromatic amino developing agents used; with the coupler compounds of my invention 111* 1' clude the mono-, diand tri-aminoaryl compounds and their derivativesformed by substitu-
• the following examples are illustrative of developing solutions which may be used to develop emulsion layers containing the couplers
• the couplers used according to my invention may be incorporated in silver halide emulsion alcohol and add this to the emulsion.
• '3 grams of coupler may be dissolved or suspended in cc. of ethyl alcohol and sodium hydroxide added in the amount of 1 /2 equivalent weights of the coupler.
• the sodium'hydroxide maybe added as solid or as a concentrate solugenerated in a solution of 50 cc.'of alcohol and this solution is addedto 1 liter of a gelatin silver then be adjusted if desired by adding a suitable acid such as acetic or sulphuric acid to neutralize all or part of the sodium hydroxide used to form the sodium salt of the coupler.
• a suitable acid such as acetic or sulphuric acid
• the coupling components may be incorporated either in gelatin or in other colloidal materials such as collodion, organic esters of cellulose or synthetic resins.
• the emulsion may be carried by a transparent medium such as glass, cellulose esters, or synthetic resin or a non-transparent reflecting medium such as paper or an opaque cellulose ester.
• the emulsion may be coated'as a single layer on the support or superposed layers containing the couplers may be coated on one or both sides of the support.
• the superposed layers may be differentially. sensitized for the formation of anatural colorimage in the well known mane ner.' v
• a photographic emulsion for forming colored images comprising a colloidal carrier 6 containing a Sensitive silver halide and a coupler compound having the formula:
• R is an aryl radical other than a hydro substituted aryl radical
• x is a phenyl substituted alkyl radical
• Y is selected from the class consisting of alkyl and aryl radicals, said coupler compound'containing at least one group selected from the class consisting of. methylene and ethenol which is reactive with primary aromatic amino developers.
• a photographic emulsion for forming colored images comprising a colloidal carrier containing a sensitive silver halide and acoupler compound having the formula:
• R-SOz-N Y where R is an aryl radical other than a hydroxy substituted aryl radical and Y- is selected from the class consisting of alkyl and aryl radicals, said coupler compound containing at least one .group selected from theclass consisting of methylene and ethenol which is reactive with 1 I aromatic amino developers.
• a photographic emulsion for forming colored images comprising a colloidal carrier containing a sensitive silver halide and a coupler 7 compound having the formula: 1
• a photographic emulsion for forming colored images comprising a colloidal carriercontaining a sensitive silver halide and acoupler compound having the formula: t i
• R-SQr-N where R is an aryl radical other than a hydroxy substituted aryl radical, X is selected from the class consisting of alkyl and phenyl substituted alkyl radicals andZ is anaphthol residue, said coupler compound containing at least one group selected from the class consisting of methylene and ethenol which is reactive with primary aromatic photographic developers.
• BSOIN accen s whereR is an aryl radical'other than ahydroxy substituted aryl radical, x is a phenyl substituted alkyl radical and Y is selected from the class consisting of alkyl and aryl radicals, said coupler compound containing at least one group selected from the class vconsisting of methylene and ethenol which is reactive with primary aromaticamino developers with a developer containing a primary aromatic amino developing agent.
• R is an aryl radical other than a hydroxy substituted aryl radical and Y is selected from the class consisting of alkyl and-aryl radicals, said coupler compound containing at least one group selected from the class consisting of methylerie and ethenol which is reactive with primary aromatic amino developers, with a developing solution containing a primary aromatic ami-.
• R is an aryl radical other than a hydroxy substituted aryl radical and Y is selected from the class consisting of alltyl and aryl radicals
• said coupler compound containing at least one group selected from the class consisting of methylene and ethenol which is reactive with primary am
• R is an aryl radical other than a hydroxy substituted aryl radical
• X is selectedirom the class consisting of alkyl and phenyl substituted alkyl radicals
• Z is a. naphthol residue
• said coupler compound containing at least one group selected from the class consisting of methylene and ethenol which is reactive with primary aromatic amino developers, with a developing solution containing a primary aromatic amino developing agent.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Priority Applications (2)

Applications Claiming Priority (3)

Publications (1)

Family

ID=32096612

Family Applications (2)

Family Applications After (1)

Country Status (3)

Cited By (26)

Families Citing this family (5)

• 1939
  • 1939-08-24 GB GB24322/39A patent/GB536939A/en not_active Expired
• 1940
  • 1940-08-22 US US353669A patent/US2298443A/en not_active Expired - Lifetime
  • 1940-10-15 US US361262A patent/US2313586A/en not_active Expired - Lifetime
• 1946
  • 1946-08-02 FR FR932002D patent/FR932002A/fr not_active Expired

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