US2887381A - Sensitized photographic substances - Google Patents

Sensitized photographic substances Download PDF

Info

Publication number
US2887381A
US2887381A US674980A US67498057A US2887381A US 2887381 A US2887381 A US 2887381A US 674980 A US674980 A US 674980A US 67498057 A US67498057 A US 67498057A US 2887381 A US2887381 A US 2887381A
Authority
US
United States
Prior art keywords
sodium
silver
sulfinate
sulfate
surface active
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
Application number
US674980A
Inventor
Levy Marilyn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US674980A priority Critical patent/US2887381A/en
Priority to GB24217/58A priority patent/GB834186A/en
Application granted granted Critical
Publication of US2887381A publication Critical patent/US2887381A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G03C1/494Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds

Definitions

  • the invention relates to new sensitized photographic substances and to photographic elements made with such substances.
  • silver p-toluene sulfinate and silver benzene sulfinate may be utilized to great advantage for the manufacture of photographic elements if they are used in combination with small amounts of surface active agents or wetting agents such as sodium lauryl sulphate, sodium 2-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers, octadecyl-tri-methyl ammonium chloride or dodecyl-trimethyl-ammonium-chloride and similar surface active compounds.
  • surface active agents or wetting agents such as sodium lauryl sulphate, sodium 2-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene
  • Example 1 1.00 gm. of silver p-toluene sulfinate is agitated with 5 ml. of gelatin (3% gelatin solution at 40 C.). After the silver salt is sufiiciently dispersed an additional ml. of the 3% gelatin solution is added. To this mixture 10 m1. of a 2% solution of sodium cetyl sulfate or sodium octyl sulfate in water is added whereupon the mixture is passed thru a stainless steel homogenizer (warmed). The homogenized dispersion is then used as a coating on clean glass slides and the slides are exposed to light and developed in the usual manner. The light sensitivity of these layers made according to the invention is increased about ten fold as against the light sensitivity of layers made without any surface active agents.
  • Example 2 1.00 gm. of silver benzene sulfinate is dispersed in 10 cc. of a 3% gelatin solution in the manner described in Example 1 and thereupon 10 cc. of a 2% solution of sodium lauryl sulfate in water is added. The mixture is passed thru a homogenizer and the dispersion is then coated on glass slides or paper. The light sensitivity of these layers is improved many times over the light sensitivity of such layers made without a wetting agent.
  • Example 3 0.6 gm. of silver benzene sulfinate are dispersed in a mixture consisting of 10 gm. of a polyvinyl butyral solution (10% in ethyl alcohol) and 0.3 cc. of glycerine. To this mixture are added 2-4 cc. of octa-decyl-trimethylammonium-chloride or dodecyl-trimethyl-ammoniumchloride (2% solution in alcohol) as wetting agent. The mixture is then treated as described above and coated on glass slides or paper.
  • the surface active agents are present in amounts of between 0.2 to 2% of the weight of the finished photographic element.
  • Two or more surface active agents may be mixed in varying proportions into the colloid carrier.
  • the mixture of the photosensitive substances and the wetting agents may be dispersed in any suitable colloid carrier to produce a modified photographic layer on one of the conventional supports.
  • the material for the photographic layer may consist of gelatin, casein, agar or various natural or synthetic high polymers such as polystyrene or phenol formaldehyde resins, vinyl resins, alkyd resins, etc.
  • the support for the new photosensitive layer may be a plate of any of the commonly used materials such as glass, paper, cellulose derivatives, etc.
  • a photographic element comprising an organic col loid carrier having dispersed therein a light sensitive silver salt selected from the group consisting of silver p-toluene sulfinate and silver benzene sulfinate and a surface active agent selected from the group of sodium lauryl sulphate, sodium 2-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers, octa-decyl-trimethylammonium-chloride or dodecyl-trimethyl-ammoniumchloride, said surface-active agents are being present in amounts of between 0.2 and 2 percent of the weight of the finished photographic element.

Description

United States Patent SENSITIZED PHOTOGRAPHIC SUBSTANCES Marilyn Levy, Red Bank, N.J., assignor to the United States of America as represented by the Secretary of the Army No Drawing. Application July 29, 1957 Serial No. 674,980
6 Claims. (Cl. 96-94) (Granted under 'h'tle 35, US. Code (1952), see. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of any royalty thereon.
The invention relates to new sensitized photographic substances and to photographic elements made with such substances.
It has been known that some of the silver salts of organic sulfinates are photosensitive and may be used to manufacture photographic elements. These photosensitive silver salts of organic sulfinates have however not attained practical importance because their photosensitivity does not compare favorably with the sensitivity of the conventional silver salts.
I now have found that silver p-toluene sulfinate and silver benzene sulfinate may be utilized to great advantage for the manufacture of photographic elements if they are used in combination with small amounts of surface active agents or wetting agents such as sodium lauryl sulphate, sodium 2-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers, octadecyl-tri-methyl ammonium chloride or dodecyl-trimethyl-ammonium-chloride and similar surface active compounds.
The invention will become more apparent from the following description of specific embodiments of the broad inventive idea.
Example 1 1.00 gm. of silver p-toluene sulfinate is agitated with 5 ml. of gelatin (3% gelatin solution at 40 C.). After the silver salt is sufiiciently dispersed an additional ml. of the 3% gelatin solution is added. To this mixture 10 m1. of a 2% solution of sodium cetyl sulfate or sodium octyl sulfate in water is added whereupon the mixture is passed thru a stainless steel homogenizer (warmed). The homogenized dispersion is then used as a coating on clean glass slides and the slides are exposed to light and developed in the usual manner. The light sensitivity of these layers made according to the invention is increased about ten fold as against the light sensitivity of layers made without any surface active agents.
Example 2 1.00 gm. of silver benzene sulfinate is dispersed in 10 cc. of a 3% gelatin solution in the manner described in Example 1 and thereupon 10 cc. of a 2% solution of sodium lauryl sulfate in water is added. The mixture is passed thru a homogenizer and the dispersion is then coated on glass slides or paper. The light sensitivity of these layers is improved many times over the light sensitivity of such layers made without a wetting agent.
"ice
2,887,381 Patented May 19, 1959 2 Example 3 0.6 gm. of silver benzene sulfinate are dispersed in a mixture consisting of 10 gm. of a polyvinyl butyral solution (10% in ethyl alcohol) and 0.3 cc. of glycerine. To this mixture are added 2-4 cc. of octa-decyl-trimethylammonium-chloride or dodecyl-trimethyl-ammoniumchloride (2% solution in alcohol) as wetting agent. The mixture is then treated as described above and coated on glass slides or paper.
Favorable results are generally obtained according to the invention if the surface active agents are present in amounts of between 0.2 to 2% of the weight of the finished photographic element. Two or more surface active agents may be mixed in varying proportions into the colloid carrier.
The mixture of the photosensitive substances and the wetting agents may be dispersed in any suitable colloid carrier to produce a modified photographic layer on one of the conventional supports. The material for the photographic layer may consist of gelatin, casein, agar or various natural or synthetic high polymers such as polystyrene or phenol formaldehyde resins, vinyl resins, alkyd resins, etc. The support for the new photosensitive layer may be a plate of any of the commonly used materials such as glass, paper, cellulose derivatives, etc.
It will be obvious to those skilled in the art that many variations and combinations of the photosensitive silver salts and the wetting agents are possible and that the invention is not limited to the specific wetting agents mentioned in the examples but can also be used in connection with other surface active or wetting agents which have the capacity of improving the light sensitivity of silver p-toluene sulfinate and silver benzene sulfinate.
What is claimed is:
l. A photographic element comprising an organic col loid carrier having dispersed therein a light sensitive silver salt selected from the group consisting of silver p-toluene sulfinate and silver benzene sulfinate and a surface active agent selected from the group of sodium lauryl sulphate, sodium 2-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers, octa-decyl-trimethylammonium-chloride or dodecyl-trimethyl-ammoniumchloride, said surface-active agents are being present in amounts of between 0.2 and 2 percent of the weight of the finished photographic element.
2. A photographic element according to claim 1 in which the silver salt consists of silver p-toluene sulfinate.
3. A photographic element according to claim 1 in which the silver salt consists of silver benzene sulfinate.
4. A photographic element according to claim 1 in which the surface active agent consists of sodium lauryl sulphate.
5. A photographic element according to claim 1 in which the surface active agent consists of sodium 2-ethylhexene sulfonate.
6. A photographic element according to claim 1 in which the surface active agent consists of sodium tetradecyl sulfate.
Levy July 24, 1956 Levy May 20, 1958

Claims (1)

1. A PHOATOGRAPHIC ELEMENT COMPRISING AN ORGANIC COLLOID CARRIER HAVING DISPERSED THEREIN A LIGHT SENSITIVE SILVER SALT SELECTED FROM THE GROUP CONSISTING OF SILVER P-TOLUENE SULFINATE AND SILVER BENZENE SULFINATE AND A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP OF SODIUM LAURYL SULPHATE, SODIUM 2-ETHYLHEXENE SULFONATE, SODIUM TETRADECYL SULFATE, SODIUM DIOCTYL PHOSPHATE,SODIUM HEPTADECYL SULFATE, POLYETHYLENE GLYCOL ALKYL ETHERS, OOCTA-DECYL-TRIMETHYLAMMONIUM-CHLORIDE OR DODECYL-TRIMETHYL-AMMONIUMCHLORIDE, SAID SURFACE-ACTIVE AGENTS ARE BEING PRESENT IN AMOUNATS OF BETWEEN 0.2 AND 2 PERCENT OF THE WEIGHT OF THE FINISHED PHOTOGRAPHIC ELEMENT.
US674980A 1957-07-29 1957-07-29 Sensitized photographic substances Expired - Lifetime US2887381A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US674980A US2887381A (en) 1957-07-29 1957-07-29 Sensitized photographic substances
GB24217/58A GB834186A (en) 1957-07-29 1958-07-28 Improvements in colour photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US674980A US2887381A (en) 1957-07-29 1957-07-29 Sensitized photographic substances

Publications (1)

Publication Number Publication Date
US2887381A true US2887381A (en) 1959-05-19

Family

ID=24708610

Family Applications (1)

Application Number Title Priority Date Filing Date
US674980A Expired - Lifetime US2887381A (en) 1957-07-29 1957-07-29 Sensitized photographic substances

Country Status (2)

Country Link
US (1) US2887381A (en)
GB (1) GB834186A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258338A (en) * 1960-12-29 1966-06-28 Claeys Daniel Alois Photographic material containing softening agent

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756146A (en) * 1954-07-28 1956-07-24 Levy Marilyn Sensitizer for photothermographic substances
US2835577A (en) * 1955-07-29 1958-05-20 Levy Marilyn Photosensitive system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756146A (en) * 1954-07-28 1956-07-24 Levy Marilyn Sensitizer for photothermographic substances
US2835577A (en) * 1955-07-29 1958-05-20 Levy Marilyn Photosensitive system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258338A (en) * 1960-12-29 1966-06-28 Claeys Daniel Alois Photographic material containing softening agent

Also Published As

Publication number Publication date
GB834186A (en) 1960-05-04

Similar Documents

Publication Publication Date Title
US2592368A (en) Gelatine silver halide emulsion layer containing a dihydroxy diphenyl tanning developing agent
DE1547791C3 (en) Electron beam sensitive photographic recording material
US3300311A (en) X-ray intensifying screens employing a water soluble copolymer of alkyl acrylate and acrylic acid
US2305693A (en) Process of making photographs
US3415649A (en) Process for the production of light-sensitive material containing coating aids
GB1048393A (en) Photographic materials containing antistatic polymers
US2887381A (en) Sensitized photographic substances
US2756146A (en) Sensitizer for photothermographic substances
GB1471778A (en) Proces for making silver halide films with wide exposure latitude and low gradient
US3255013A (en) Increasing the sensitivity of photographic emulsions
US2119724A (en) Reduction of contrast of photographic emulsions
US3640721A (en) Gelatinous photographic coating composition
US3006762A (en) Sensitizers for photographic emulsions
DE2241400A1 (en) LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENIDE MATERIAL
US2649375A (en) Light-sensitive photographic element
US2293261A (en) Photographic material
US2379373A (en) Photographic elements
US3692525A (en) Ultraviolet protection of photographic-materials
US3091534A (en) Stripping film for improved emulsion
US2258609A (en) Nonhalation photographic element
US3721564A (en) Gelatino silver halide emulsion containing a halogenated aldehyde acid and a perhydrotriazine compound as hardening agents
GB507009A (en) Improved photographic material for colour photography
US1570062A (en) Process of making nonstatic film
US3615520A (en) Novel photographic products and processes
US3178288A (en) Photographic film having improved flexibility