GB1328289A - Spetrally sensitised photograph silver halide emulsions - Google Patents

Spetrally sensitised photograph silver halide emulsions

Info

Publication number
GB1328289A
GB1328289A GB5887470A GB5887470A GB1328289A GB 1328289 A GB1328289 A GB 1328289A GB 5887470 A GB5887470 A GB 5887470A GB 5887470 A GB5887470 A GB 5887470A GB 1328289 A GB1328289 A GB 1328289A
Authority
GB
United Kingdom
Prior art keywords
dye
alkyl
silver halide
cycloalkyl
halogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5887470A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1328289A publication Critical patent/GB1328289A/en
Expired legal-status Critical Current

Links

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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/28—Sensitivity-increasing substances together with supersensitising substances
    • G03C1/29—Sensitivity-increasing substances together with supersensitising substances the supersensitising mixture being solely composed of dyes ; Combination of dyes, even if the supersensitising effect is not explicitly disclosed

Landscapes

  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1328289 Spectrally sensitized photographic silver halide emulsions EASTMAN KODAK CO 11 Dec 1970 [12 Dec 1969] 58874/70 Heading G2C A photographic light-sensitive silver halide emulsion is spectrally sensitized with (1) a benzimidazolooxacarbocyanine dye and (2) a benzimidazoloselenacarbocyanine dye. Dye (1) preferably has the Formula:- and dye (2) preferably has the Formula:- wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are each alkyl, substituted alkyl (e.g. aralkyl) or cycloalkyl; R<SP>5</SP> and R<SP>6</SP> are each alkyl having 1-4 carbons; R<SP>7</SP>, R<SP>8</SP>, R<SP>9</SP>, R<SP>10</SP>, R<SP>11</SP>, R<SP>12</SP>, R<SP>13</SP> and R<SP>14</SP> are each H or halogen; R<SP>16</SP> and R<SP>18</SP> are each H, halogen, alkyl, cycloalkyl, alkoxy or aryl; R<SP>15</SP> and R<SP>17</SP> are each H, halogen, cyano, alkyl, cycloalkyl, alkoxy, alkylaminocarbonyl, trifluoroalkyl, trifluoroalkylsulphonyl or an acyl radical of a monobasic fatty acid; L<SP>1</SP>, L<SP>2</SP>, L<SP>3</SP> and L<SP>4</SP> are each a methine group which may be substituted; X<SP>1</SP> and X<SP>2</SP> are each an anion; and n, m, p and k are each 1 or 2; or, when R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> or R<SP>4</SP> is sulphqalkyl or carboxyalkyl and X<SP>1</SP> or X<SP>2</SP> is a hydroxyl ion, the internal anhydride of such dye or dyes.
GB5887470A 1969-12-12 1970-12-11 Spetrally sensitised photograph silver halide emulsions Expired GB1328289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88474669A 1969-12-12 1969-12-12

Publications (1)

Publication Number Publication Date
GB1328289A true GB1328289A (en) 1973-08-30

Family

ID=25385300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5887470A Expired GB1328289A (en) 1969-12-12 1970-12-11 Spetrally sensitised photograph silver halide emulsions

Country Status (4)

Country Link
US (1) UST874010I4 (en)
CA (1) CA941220A (en)
FR (1) FR2073206A5 (en)
GB (1) GB1328289A (en)

Also Published As

Publication number Publication date
FR2073206A5 (en) 1971-09-24
CA941220A (en) 1974-02-05
UST874010I4 (en) 1970-05-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees