US2756146A - Sensitizer for photothermographic substances - Google Patents
Sensitizer for photothermographic substances Download PDFInfo
- Publication number
- US2756146A US2756146A US446428A US44642854A US2756146A US 2756146 A US2756146 A US 2756146A US 446428 A US446428 A US 446428A US 44642854 A US44642854 A US 44642854A US 2756146 A US2756146 A US 2756146A
- Authority
- US
- United States
- Prior art keywords
- photothermographic
- silver
- sodium
- substances
- group
- 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
Links
- 239000000126 substance Substances 0.000 title description 10
- 239000000080 wetting agent Substances 0.000 claims description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical class [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- -1 SODIUM LAURYL SULPHATE SODIUM 2-ETHYLHEXENE SULFONATE Chemical compound 0.000 claims description 5
- XNGYKPINNDWGGF-UHFFFAOYSA-L silver oxalate Chemical compound [Ag+].[Ag+].[O-]C(=O)C([O-])=O XNGYKPINNDWGGF-UHFFFAOYSA-L 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 150000005215 alkyl ethers Chemical class 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229960000776 sodium tetradecyl sulfate Drugs 0.000 claims description 4
- UPUIQOIQVMNQAP-UHFFFAOYSA-M sodium;tetradecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCOS([O-])(=O)=O UPUIQOIQVMNQAP-UHFFFAOYSA-M 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- CQLFBEKRDQMJLZ-UHFFFAOYSA-M silver acetate Chemical compound [Ag+].CC([O-])=O CQLFBEKRDQMJLZ-UHFFFAOYSA-M 0.000 claims description 3
- 229940071536 silver acetate Drugs 0.000 claims description 3
- XCPXWEJIDZSUMF-UHFFFAOYSA-M sodium;dioctyl phosphate Chemical compound [Na+].CCCCCCCCOP([O-])(=O)OCCCCCCCC XCPXWEJIDZSUMF-UHFFFAOYSA-M 0.000 claims description 3
- HHURSJAUVYNJBT-UHFFFAOYSA-M sodium;heptadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCCOS([O-])(=O)=O HHURSJAUVYNJBT-UHFFFAOYSA-M 0.000 claims description 3
- IXYACKYHUWCLAM-UHFFFAOYSA-M sodium;2-ethylhex-1-ene-1-sulfonate Chemical compound [Na+].CCCCC(CC)=CS([O-])(=O)=O IXYACKYHUWCLAM-UHFFFAOYSA-M 0.000 claims description 2
- 108010010803 Gelatin Proteins 0.000 description 9
- 206010034960 Photophobia Diseases 0.000 description 9
- 239000008273 gelatin Substances 0.000 description 9
- 229920000159 gelatin Polymers 0.000 description 9
- 235000019322 gelatine Nutrition 0.000 description 9
- 235000011852 gelatine desserts Nutrition 0.000 description 9
- 208000013469 light sensitivity Diseases 0.000 description 9
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 7
- 239000003607 modifier Substances 0.000 description 5
- 150000003378 silver Chemical class 0.000 description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229940071575 silver citrate Drugs 0.000 description 3
- QUTYHQJYVDNJJA-UHFFFAOYSA-K trisilver;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [Ag+].[Ag+].[Ag+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QUTYHQJYVDNJJA-UHFFFAOYSA-K 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- SXOCOQUSHYUWNL-UHFFFAOYSA-N NNC(=S)N.[Ag] Chemical compound NNC(=S)N.[Ag] SXOCOQUSHYUWNL-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- FXPVUWKFNGVHIZ-UHFFFAOYSA-L disodium;dodecyl sulfate Chemical compound [Na+].[Na+].CCCCCCCCCCCCOS([O-])(=O)=O.CCCCCCCCCCCCOS([O-])(=O)=O FXPVUWKFNGVHIZ-UHFFFAOYSA-L 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
- G03C1/498—Photothermographic systems, e.g. dry silver
- G03C1/49836—Additives
- G03C1/49863—Inert additives, e.g. surfactants, binders
Definitions
- the invention relates to modifiers for photothermographic substances and for layers sensitized with such modified photothermographic substances.
- These modifiers may not be in themselves photothermographic but have the property of modifying the sensitivity of at least some of the known photothermographic substances.
- photothermographic has been defined in U. S. Patent 2,059,839 as characterizing a material which after its exposure to light may be decomposed by the action of heat differentially in accordance with the exposure to light. A photographic layer sensitized with such photothermographic substances is therefore, after exposure to light, developable by heat.
- the present invention is based on the discovery that the light sensitivity of most known photothermographic silver salts may be modified by the addition of Wetting agents or surface-active agents. These modifiers may either increase or decrease the light sensitivity of the photothermographic silver salt.
- Example 1 Wet 0.75 gram of silver succindiamidoxime with ml. of gelatin (3% at 40 C.) with agitation. Add ml. of gelatin (3%) followed by 5 ml. of a 2% solution of a wetting agent, e. g., sodium lauryl sulfate. Pass through a stainless steel homogenizer (warmed) and coat on clean glass slides. The slides may then be exposed to light and thermally developed at about 104 C. The light sensitivity of such layers increases with increased percentages of the wetting agent added.
- a wetting agent e. g., sodium lauryl sulfate
- the light sensitivity of a water solution of silver succindiamidoxime is also increased by the addition of sodium lauryl sulfate.
- Example 2 Wet 0.70 gram silver oxalate with 5 ml. of a 3% gelatin solution at 40 C. Add remaining 10 ml. of gelatin with agitation. When the silver salt is well dispersed,
- the light sensitivity of the above-described emulsion using silver oxalate is considerably increased by the above-mentioned wetting agents.
- a similar effect is obtainable by using silver citrate or silver acetate as the photothermographic substance.
- Polyethylene glycol alkyl ethers have only a slight effect on the light sensitivity of these silver salts.
- the ratio of the wetting agent to the photothermographic silver salts used in the preparation of photothern'iographic emulsions in gelatin may vary within considerable limits. Too large a percentage of a Wetting agent usually gives a discontinuous film on glass with gelatin as the vehicle. Generally, satisfactory results are obtained with layers prepared from emulsions containing about 2.1% gelatin, 0.5 to 1.0% wetting agent, 3.6% silver salt and between 93.8 and 93.3% water.
- the light sensitivity of some of the known photothermographic substances may be decreased by some of the modifiers mentioned above. It was found, for instance, that the light sensitivity of silver thiosemicarbazide is increased by the addition of sodium 2-ethylhexene sulfonate, but decreased by the addition of sodium heptadecyl sulfate, sodium dioctyl phosphate, sodium tetradecyl sulfate, polyethylene glycol alkyl ethers, and sodium lauryl sulfate.
- the photothermographic substances modified according to the invention may be dispersed in any suitable colloid carrier to produce a modified photothermographic layer on one of the conventional supports.
- the material for the photothermographic layer may conventionally consist of gelatin, caesin, agar, or various natural or synthetic high polymers such as polystyrene or phenol formaldehyde resins, vinyl resins, alkyd resins, etc.
- the support for the modified photothermographic layer may be a plate of any of the commonly used material such as glass, paper, cellulose derivatives, etc.
- the invention is not limited to the specific modifiers described above but can also be used in connection with other surface active or wetting agents which have the capacity of modifying (increasing or decreasing) the light sensitivity of photothermographic substances.
- a photothermographic element comprising a colloid carrier having dispersed therein a member of the group of photothermographic silver salts consisting of silver succindiamidoxime, silver oxalate, silver citrate, silver acetate and a member of the group of Wetting agents consisting of sodium lauryl sulphate sodium Z-ethylhexene sulfonate, sodium Z-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers.
- a colloid carrier having dispersed therein a member of the group of photothermographic silver salts consisting of silver succindiamidoxime, silver oxalate, silver citrate, silver acetate and a member of the group of Wetting agents consisting of sodium lauryl sulphate sodium Z-ethylhexene sulfon
- a photothermographic element according to claim 1 comprising about 2.1% gelatin, 0.5 to 1.0% of said wetting agent, 3.6% of said photothermographic silver salt and 93.8% to 93.3% water.
- a photothermographic element according to claim 1 1 2315121; et a1. gif -2g, h th i1 t 5 e- In W 1611 the Photo m graphlc s ver salt 0011815 5 of 2,304,900 Stasiw Dec 15 1942 Silver acetate- 2,368,287 Chilton Ja 30 1945
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
United States Patent SENSITIZER FOR. PHOTOTHERMO GRAPHIC.
' SUBSTANCES I 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 28, 1954, Serial No. 446,428
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 modifiers for photothermographic substances and for layers sensitized with such modified photothermographic substances. These modifiers may not be in themselves photothermographic but have the property of modifying the sensitivity of at least some of the known photothermographic substances.
The term photothermographic has been defined in U. S. Patent 2,059,839 as characterizing a material which after its exposure to light may be decomposed by the action of heat differentially in accordance with the exposure to light. A photographic layer sensitized with such photothermographic substances is therefore, after exposure to light, developable by heat.
The present invention is based on the discovery that the light sensitivity of most known photothermographic silver salts may be modified by the addition of Wetting agents or surface-active agents. These modifiers may either increase or decrease the light sensitivity of the photothermographic silver salt.
The invention will become more apparent from the following description of embodiments of the broad inventive idea.
Example 1 Wet 0.75 gram of silver succindiamidoxime with ml. of gelatin (3% at 40 C.) with agitation. Add ml. of gelatin (3%) followed by 5 ml. of a 2% solution of a wetting agent, e. g., sodium lauryl sulfate. Pass through a stainless steel homogenizer (warmed) and coat on clean glass slides. The slides may then be exposed to light and thermally developed at about 104 C. The light sensitivity of such layers increases with increased percentages of the wetting agent added.
The light sensitivity of a water solution of silver succindiamidoxime is also increased by the addition of sodium lauryl sulfate.
Example 2 Example 3 Wet 0.70 gram silver oxalate with 5 ml. of a 3% gelatin solution at 40 C. Add remaining 10 ml. of gelatin with agitation. When the silver salt is well dispersed,
2,756,l46 Patented July 24, 1956 add S-ml. of a 2% solution of a wetting agent such as sodium lauryl sulfate, sodium Z-ethylhexene sulfonate, or sodium tetradecyl sulfate. Pass through a stainless steel homogenizer (warmed) and coat on glass slides. The slides may then be exposed to light and thermally developed.
The light sensitivity of the above-described emulsion using silver oxalate is considerably increased by the above-mentioned wetting agents. A similar effect is obtainable by using silver citrate or silver acetate as the photothermographic substance. Polyethylene glycol alkyl ethers have only a slight effect on the light sensitivity of these silver salts.
The ratio of the wetting agent to the photothermographic silver salts used in the preparation of photothern'iographic emulsions in gelatin may vary within considerable limits. Too large a percentage of a Wetting agent usually gives a discontinuous film on glass with gelatin as the vehicle. Generally, satisfactory results are obtained with layers prepared from emulsions containing about 2.1% gelatin, 0.5 to 1.0% wetting agent, 3.6% silver salt and between 93.8 and 93.3% water.
The light sensitivity of some of the known photothermographic substances may be decreased by some of the modifiers mentioned above. It was found, for instance, that the light sensitivity of silver thiosemicarbazide is increased by the addition of sodium 2-ethylhexene sulfonate, but decreased by the addition of sodium heptadecyl sulfate, sodium dioctyl phosphate, sodium tetradecyl sulfate, polyethylene glycol alkyl ethers, and sodium lauryl sulfate.
The photothermographic substances modified according to the invention may be dispersed in any suitable colloid carrier to produce a modified photothermographic layer on one of the conventional supports. The material for the photothermographic layer may conventionally consist of gelatin, caesin, agar, or various natural or synthetic high polymers such as polystyrene or phenol formaldehyde resins, vinyl resins, alkyd resins, etc. The support for the modified photothermographic layer may be a plate of any of the commonly used material such as glass, paper, cellulose derivatives, etc.
The invention is not limited to the specific modifiers described above but can also be used in connection with other surface active or wetting agents which have the capacity of modifying (increasing or decreasing) the light sensitivity of photothermographic substances.
It will be obvious to those skilled in the art that many variations and combinations of photothermographic silver salts and wetting agents are possible within the broad inventive idea as characterized in the appended claims.
What is claimed is:
l. A photothermographic element comprising a colloid carrier having dispersed therein a member of the group of photothermographic silver salts consisting of silver succindiamidoxime, silver oxalate, silver citrate, silver acetate and a member of the group of Wetting agents consisting of sodium lauryl sulphate sodium Z-ethylhexene sulfonate, sodium Z-ethylhexene sulfonate, sodium tetradecyl sulfate, sodium dioctyl phosphate, sodium heptadecyl sulfate, polyethylene glycol alkyl ethers.
2. A photothermographic element according to claim 1 comprising about 2.1% gelatin, 0.5 to 1.0% of said wetting agent, 3.6% of said photothermographic silver salt and 93.8% to 93.3% water.
3. A photothermographic element according to claim 1 in which the photothermographic silver salt consists of silver succindiamidoxime.
4. A photothermographic element according to claim 1 in which the photothermographic silver salt consists of silver oxalate.
5. A photothermographic element according to claim References Cited in the file of this patent 1 in which the photothermographic silver salt consists of UNITED STATES PATENTS silver citrate.
6. A photothermographic element according to claim 1 3 1 2315121; et a1. gif -2g, h th i1 t 5 e- In W 1611 the Photo m graphlc s ver salt 0011815 5 of 2,304,900 Stasiw Dec 15 1942 Silver acetate- 2,368,287 Chilton Ja 30 1945
Claims (1)
1. A PHOTOTHERMOGRAPHIC ELEMENT COMPRISING A COLLOID CARRIER HAVING DISPERSED THEREIN A MEMBER OF THE GROUP OF PHOTOTHERMOGRAPHIC SILVER SALTS CONSISTING OF SILVER SUCCINDIAMIDOXZIME, SILVER OXALATE SILVER CONSISTING OF SILVER ACETATE AND A MEMBER OF THE GROUP OF WETTING AGENTS CONACETATE AND A MEMBER OF THE GROUP OF WETTING AGENTS CONSISTING OF SODIUM LAURYL SULPHATE SODIUM 2-ETHYLHEXENE SULFONATE, SODIUM 2-ETHYLHEXENE SULFONATE, SODIUM TETRADECYL SULFATE, SODIUM DIOCTYL PHOSPHATE, SODIUM HEPTADECYL SULFATE, POLYETHYLENE GLYCOL ALKYL ETHERS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US446428A US2756146A (en) | 1954-07-28 | 1954-07-28 | Sensitizer for photothermographic substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US446428A US2756146A (en) | 1954-07-28 | 1954-07-28 | Sensitizer for photothermographic substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2756146A true US2756146A (en) | 1956-07-24 |
Family
ID=23772541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US446428A Expired - Lifetime US2756146A (en) | 1954-07-28 | 1954-07-28 | Sensitizer for photothermographic substances |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2756146A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887381A (en) * | 1957-07-29 | 1959-05-19 | Levy Marilyn | Sensitized photographic substances |
| US3259494A (en) * | 1962-04-05 | 1966-07-05 | Itek Corp | Exposure, heat development and fixing of photosensitive mercurous oxalate and silvercompositions |
| US4120728A (en) * | 1973-07-23 | 1978-10-17 | Fuji Photo Film Co., Ltd. | Thermally developable light-sensitive material |
| US4125403A (en) * | 1976-06-25 | 1978-11-14 | Fuji Photo Film Co., Ltd. | Heat developable light sensitive material |
| WO1997004356A1 (en) * | 1995-07-18 | 1997-02-06 | Agfa-Gevaert N.V. | Photothermographic recording material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2129242A (en) * | 1935-05-25 | 1938-09-06 | Eastman Kodak Co | Heat sensitive compositions |
| US2197809A (en) * | 1938-01-03 | 1940-04-23 | Du Pont Film Mfg Corp | Photographic process and emulsion utilizing cation-active surface active agents |
| US2304900A (en) * | 1939-06-15 | 1942-12-15 | Stasiw Ostap | Process of producing lightsensitive systems |
| US2368287A (en) * | 1941-08-28 | 1945-01-30 | Ilford Ltd | Photographic element and method of making it |
-
1954
- 1954-07-28 US US446428A patent/US2756146A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2129242A (en) * | 1935-05-25 | 1938-09-06 | Eastman Kodak Co | Heat sensitive compositions |
| US2197809A (en) * | 1938-01-03 | 1940-04-23 | Du Pont Film Mfg Corp | Photographic process and emulsion utilizing cation-active surface active agents |
| US2304900A (en) * | 1939-06-15 | 1942-12-15 | Stasiw Ostap | Process of producing lightsensitive systems |
| US2368287A (en) * | 1941-08-28 | 1945-01-30 | Ilford Ltd | Photographic element and method of making it |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2887381A (en) * | 1957-07-29 | 1959-05-19 | Levy Marilyn | Sensitized photographic substances |
| US3259494A (en) * | 1962-04-05 | 1966-07-05 | Itek Corp | Exposure, heat development and fixing of photosensitive mercurous oxalate and silvercompositions |
| US4120728A (en) * | 1973-07-23 | 1978-10-17 | Fuji Photo Film Co., Ltd. | Thermally developable light-sensitive material |
| US4125403A (en) * | 1976-06-25 | 1978-11-14 | Fuji Photo Film Co., Ltd. | Heat developable light sensitive material |
| WO1997004356A1 (en) * | 1995-07-18 | 1997-02-06 | Agfa-Gevaert N.V. | Photothermographic recording material |
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