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
  • G03C7/36—Couplers containing compounds with active methylene groups
  • G03C7/38—Couplers containing compounds with active methylene groups in rings
  • G03C7/381—Heterocyclic compounds
  • G03C7/3815—Heterocyclic compounds with one heterocyclic ring

Definitions

• My present invention relates to the production of color photographic pictures.
• a further object of this invention is to provide a photographic material one emulsion layer of which contains a-indolinone as the dyestufi component. Another object is the provision of a photographic material which comprises .an emulsion layer containing a-indolinone substituted at the nitrogen atom.
• Yet another object is to provide a photographic material comprising an emulsion layer which contains a-indolinone substituted in the benzene nucleus.
• a still further object is to provide a photo- Q graphic material having an emulsion layer which contains a-indolinone substituted by 'alkyl droxy groups or nitro groups.
• Yet another object is the provision of a photogroups, alkoxy groups, aryl groups,'halogen, hy-
• the groups which impart fastness to diffusion may be introduced, for example, by the methods described in the U. S. Patents 2,179,238, 2,178,612 and 2,179,244 and 'U. S. Patent applications 94,340 filed August 5, 1936, 159,518 filed August 17, 1937, 164,499 filed September 18, 1937, 166,832 filed October 1, 1937, 171,705 filed October 29, 1937, 175,285 filed November 18, 1937, 176,058 filed November 23, 1937 and 191,952 filed February 23, 1938.
• the last named application describes components which contain in addition to a group rendering the component fast to diffusion a solubilizing group such as a carboxy group.
• the components are prepared by reacting the internal anhydride of apolybasic organic acid, such as the anhydrides of maleic acid, succinic acid, pyro-tartaric acid and the like containing for example a long aliphatic chain 1. e. of at least 5 carbon atoms such as octadecylene, isodecylene, iso-nonylene and the like with a color former containing a reactive group such as an aminoor hydroxy group.
• the ring of the anhydride is thereby split in such a manner that one C0- group'units with the reactive group and the other forms a 'carboxy group.
• the color former there may be used p-amino-aceto-acetic' anilide, 4 q amino 1-phenyl-3-methyl-5-pyrazolone,- 1- amiho-S-naphthol .and the like.
• the. anhydride there may be used octadecylene succinic acid anhydride, u-dodecyl-m-hexahydrobenzenepyro-tartaric acid anhydride and the like.
• nitrogen atom of a-indolinone may carry a radicle prescribed in one or other of the foregoing applications, for instance an undecyl group. Furthermore, as described in the speciflcation of the U. S. Patent application Ser. No.
• the molecule of the dyestufi component maybe in the form of a chain.
• radicles lending fastness to diffusion may be introduced in known manner, for example, by
• the photographic emulsions having different dyestuif components may be distributed in particles on a support. With the aid of this material screen pictures may be made.
• the silver halide emulsion layers provided with layers being sensitized for differentregions of the dyestuif components may be combined with NH N Ali-111a:
• the dyestufl component is produced in following manner: d-indolinone is dissolved in concentrated 4 sulfuric acid and nitrated by addition of 1 mol of sodium nitrate with cooling. The reaction product is precipitated by pouring out the mixture on ice and after recrystallizing from water is reduced with stannous chloride and hydrochloric acid. The tin is removed with hydrogen sulfide and the whole is concentrated by evaporation. The reaction product is then acylated with 1 moi of oleic acid chloride in pyr i e. After 7 sulfonation with sulfuric acid containing 30 per cent S0; with cooling a product easily soluble in water is obtained. This dyestufl component is then dissolved in a solution of sodium carbonate and added to a silver halide emulsion.
• Example 2 A of the 'followmg formula may be Q incorporated in a photographic layer: I i
• Example 4 1 mol of fi-alninO-a-lndOllIlOIle produced in the manner described in Example 1 is reacted with 1 mol of abietic acid chloride.
• the product thus obtained of the following formula 0 NH N lo emetic acldradicle is dissolved in methanol and added to a photographic emulsion.
• a photographic multi-layer material comprising at least one silver halide gelatin emulsion layer containing a compound selected from the class of a-indolinone and substituted aindolinone,-said compound containing inits U molecule a group capable of making said compound fast to diffusion in gelatin.
• a photographic multi-layer material comprising at least one silver halide emulsion layer containing a compound of the formula ll prising at least one silver halide emulsion layer containing a compound of the formula C1a a1 '7.
• a photographic multi-layer material comprising at least one silver halide emulsion layer containing a compound of the formula 8.
• the photographic silver halide emulsion defined in claim 2 wherein the group capable of making said compounds fast to diffusion is an aliphatic radicle of high molecular weight.
• the photographic silver halide emulsion deflnedin claim 2 wherein the group capable of making said compounds fast to diffusion is an aliphatic radicle of high molecular weight which is linked to the indolinone nucleus by a linkage selected from the class consisting of a direct carbon to direct nuclear carbon linkage, an ester linkage and an acid amide linkage.
• the photographic silver halide emulsion defined in claim 2 wherein the group capable of making said compounds fast to difiusion is an aliphatic radicle containing from 18 to, 22 carbon atoms and having a solubilizing group selected from the class consisting of 'sulfonic acid and carboxylic acid groups.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7195236

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (2)

• 0
  • BE BE432544D patent/BE432544A/xx unknown
• 1939
  • 1939-02-02 US US254235A patent/US2186045A/en not_active Expired - Lifetime
  • 1939-02-04 FR FR849861D patent/FR849861A/fr not_active Expired
  • 1939-02-04 CH CH232384D patent/CH232384A/de unknown

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