US2326057A - Antihalation film - Google Patents

Antihalation film Download PDF

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Publication number
US2326057A
US2326057A US426738A US42673842A US2326057A US 2326057 A US2326057 A US 2326057A US 426738 A US426738 A US 426738A US 42673842 A US42673842 A US 42673842A US 2326057 A US2326057 A US 2326057A
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United States
Prior art keywords
dye
acid
cellulose
amine
acyl groups
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 - Lifetime
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US426738A
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English (en)
Inventor
Gale F Nadeau
Alfred D Slack
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Eastman Kodak Co
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Eastman Kodak Co
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Filing date
Publication date
Priority to FR956702D priority Critical patent/FR956702A/fr
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US426738A priority patent/US2326057A/en
Application granted granted Critical
Publication of US2326057A publication Critical patent/US2326057A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/835—Macromolecular substances therefor, e.g. mordants

Definitions

  • This invention relates to photographic film, and more particularly to photographic film protected against halation.
  • Antihalation coatings for the protection of sensitive photographic film against halation, of the type removable in photographic processing solutions are well known.
  • acyl groups per C24 cellulose unit of which not more than one is a dicarboxylic acid acyl group and the remainder are aliphatic monobasic acid acyl groups of less than five carbon atoms, and an amine salt of an acid dye.
  • cellulose mixed organic acid dicarboxylic acid esters may be used, such as those containing substantially four to eight acyl groups. per C24 cellulose unit, of which not more than one is a dicarboxylic acid acyl group and the remuch decreased, if not eliminated altogether.
  • the amine salt of the dye possesses an additional advantage in that it is usually much more solvent-soluble than the free acid form of the dye.
  • thesupport I 0 of a cellulose ester or other material such as a synthetic resin As shown therein thesupport I 0 of a cellulose ester or other material such as a synthetic resin,
  • a sensitive emulsion mainder are aliphatic monobasic acid acyl groups, e. g. cellulose valerate phthalate, caprylate succinate, etc.
  • Example 1 aw 2 v Supports of the type described in Example 1 may be coated with an amine salt of a cellulose dicarboxylic'acid ester from a solution of the following composition:
  • the dye designated as "A dye in solutions A, Band C, may be a sulfonated Malachite Green dye, and 3" dye may be Acid Magenta.
  • amines in addition to the amines shown in the above formulas we may use many other organic amines such as dioctyl amine, tributyi amine, diamyl amine, guanidine, etc. purpose of our invention whfle all amines appear to be eifective to a certain extent in accomplishing the objects of the invention, the amines chosen. should transform the antihalation dye and carrier material to compounds possessing reduced moisture susceptibility. It is for this reason that amines possessing a minimum solubility in water are particularly useful.
  • a photographic film free from halation which comprises a support provided on one side thereof with a light sensitive emulsion layer, and
  • cellulose mixed organic acid dicarboxylic acid ester containing substantially four to eight aliphatic monobasic organic acid acyl and dicarboxylic acid acyl groups per C24 cellulose unit of which not more than one is a dicarboxylic acid group and the remainder are aliphatic monobasic acid acyl groups, and a mixture of an organic amine and an acid dye.
  • a photographic film free from halation which comprises a support provided on one side thereof with a light sensitive emulsion layer, and on the opposite side with a layer containing an amine salt of a cellulose mixed organic acid dicaiborwlic acid ester containing substantially four to eight aliphatic monobasic organic acid acyl and dicarboxylic acid acyl groups per C24 cellulose unit of which not more than one is a dicarboxylic acid group and the remainder are aliphatic monobasic acid acyl groups, and an amine salt of an acid dye.
  • a photographic film free from halation which comprises a support provided on one side thereof with a light sensitive emulsion layer, and on the opposite side with a layer containing a cellulose mixed organic acid dicarboxylic acid ester cotaining substantially four aliphatic monobasic organic acid acyl and dicarboxylic acid acyl groups per C24 cellulose unit of which not more than one is a dicarboxylic acid acyl group and the remainder are aliphatic monobasic acid acyl groups, and an amine salt of an acid dye.
  • a photographic film free from halation which comprises a support provided on one side thereof with a light sensitive emulsion layer, and on the opposite side with a layer containing an amine salt of a cellulose mixed organic acid dicarboxylic acid ester containing substantially eight aliphatic monobasic organic acid acyl and dicarboxylic acid acyl groups per C24 cellulose unit of which not more than one is a dicarboxyiic acid acyl group and the remainder are aliphatic monobasic acid acyl groups, and an amine salt of an acid dye.
  • a photographic film free from halation which comprises a support provided on one side thereof with a light sensitive emulsion layer, and on the opposite side with a layer containing an amine salt of a cellulose mixed organic acid dicarboxylic acid ester containing substantially four to eight acyl groups per C24 cellulose unit of which one is a dicarboxylic acid acyl group and the remainder are aliphatic monobasic acid acyl groups, and an amine salt of an acid dye.
  • GALE F NAlDEAU. ALFRED D. SLACK.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US426738A 1942-01-14 1942-01-14 Antihalation film Expired - Lifetime US2326057A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR956702D FR956702A (sv) 1942-01-14
US426738A US2326057A (en) 1942-01-14 1942-01-14 Antihalation film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US426738A US2326057A (en) 1942-01-14 1942-01-14 Antihalation film

Publications (1)

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US2326057A true US2326057A (en) 1943-08-03

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US426738A Expired - Lifetime US2326057A (en) 1942-01-14 1942-01-14 Antihalation film

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US (1) US2326057A (sv)
FR (1) FR956702A (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274563A (sv) * 1961-02-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material

Also Published As

Publication number Publication date
FR956702A (sv) 1950-02-06

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