UST888016I4 - Defensive publication - Google Patents

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Publication number
UST888016I4
UST888016I4 US888016DH UST888016I4 US T888016 I4 UST888016 I4 US T888016I4 US 888016D H US888016D H US 888016DH US T888016 I4 UST888016 I4 US T888016I4
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US
United States
Prior art keywords
group
pyridine
ethyl
heterocyclic
nitrogen containing
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/10Organic substances
    • G03C1/12Methine and polymethine dyes

Definitions

  • Photographic silver halide emulsions contain a sensitizing combination comprising a merocyanine dye having an imino group on the acidic nucleus thereof, and a pyridine and/ or a quinoline base.
  • the preferred merocyanine dyes have one of the following formulas:
  • a preferred combination comprises 3 ethyl-5-

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pyridine Compounds (AREA)

Abstract

PHOTOGRAPHIC SILVER HALIDE EMULSIONS CONTAIN A SENSITIZING COMBINATION COMPRISING A MEROCYANINE DYE HAVING AN IMINO GROUP ON THE ACIDIC NUCLEUS THEREOF, AND A PYRIDINE AND-OR A QUINOLINE BASE. THE PREFERRED MEROCYANINE DYES HAVE ONE OF THE FOLLOWING FORMULAS:

WHEREIN N AND M EACH REPRESENTS A POSITIVE INTEGER OF FROM 1 TO 2; L REPRESENTS A METHINE LINKAGE; D REPRESENTS AND OXYGEN ATOM, A SULFUR ATOM, A SELENIUM ATOM OR THE GROUP =N-R; R1, R2 AND R4 EACH REPRESENTS AN ALKYL GROUP OR AN ARYL GROUP; R3 REPRESENTS AN AMINO GROUP, AN ALKYL GROUP, AN ARYL GROUP, AN ACYL GROUP, AN ARYLSULFONYL GROUP, AN ALKOXYCARBONYL GROUP, A CARBOXYALKYLCARBONYL GROUP, A 5- TO 6-MEMBERED NITROGEN CONTAINING HETEROCYCLIC GROUP, AND THE GROUP

WHEREIN Z1, M, D, R1 AND R2 ARE AS ABOVE DEFINED; X REPRESENTS AN ACID ANION; AND Z1 AND Z2 EACH REPRESENTS THE NON-METALLIC ATOMS NECESSARY TO COMPLETE A NITROGEN CONTAINING THE HETEROCYCLIC NUCLEUS CONTAINING FROM 5 TO 6 ATOMS IN THE HETEROCYCLIC RING. A PREFERRED COMBINATION COMPRISES 3 - ETHYL-5((3-ETHYL-2-BENZOTHIAZOLINYLIDENE)ETHYLIDIENE)-2-P-CARBOXYPHENYLIMINO-4-THIAZOLIDINONE AND PYRIDINE.

Description

DEFENSIVE PUBMCATTQN UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED JULY 20, 1971 T888,0l6 PHOTOGRAPHIC MATERIALS Norman W. Kalenda, Kodak Park, Rochester, NY. 14650 Filed Dec. 4, 1970, Ser. No. 95,419 Int. Cl. G03c N10 US. Cl. 96-126 No Drawing. 27 Pages Specification Photographic silver halide emulsions contain a sensitizing combination comprising a merocyanine dye having an imino group on the acidic nucleus thereof, and a pyridine and/ or a quinoline base. The preferred merocyanine dyes have one of the following formulas:
L=-(ort=oH-).. 11 :-R, wherein n and m each represents a positive integer of from 1 to 2; L represents a methine linkage; D represents an oxygen atom, a sulfur atom, a selenium atom or the group =N-R; R, R R and R each represents an alkyl group or an aryl group; R represents an amino group, an al-kyl group, an aryl group, an acyl group, an arylsulfonyl group, an alkoxycarbonyl group, a carboxyalkylcarbonyl group, a 5- to 6-membered nitrogen containing heterocyclic group, and the group wherein Z m, D, R and R are as above defined; X represents an acid anion; and Z and Z each represents the non-metallic atoms necessary to complete a nitrogen containing heterocyclic nucleus containing from 5 to 6 atoms in the heterocyclic ring. A preferred combination comprises 3 ethyl-5-[(3-ethyl-Z-benzothiazolinylidene)ethylidiene]-2p-carboxyphenylimino-4-thiazolidinone and pyridine.
US888016D 1970-12-04 1970-12-04 Defensive publication Pending UST888016I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9541970A 1970-12-04 1970-12-04

Publications (1)

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UST888016I4 true UST888016I4 (en) 1971-07-20

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US888016D Pending UST888016I4 (en) 1970-12-04 1970-12-04 Defensive publication

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077191A (en) * 1989-12-26 1991-12-31 Eastman Kodak Company Photographic sensitizing dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077191A (en) * 1989-12-26 1991-12-31 Eastman Kodak Company Photographic sensitizing dyes

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