US1925557A - Photographic developer with alkali substitute - Google Patents
Photographic developer with alkali substitute Download PDFInfo
- Publication number
- US1925557A US1925557A US590520A US59052032A US1925557A US 1925557 A US1925557 A US 1925557A US 590520 A US590520 A US 590520A US 59052032 A US59052032 A US 59052032A US 1925557 A US1925557 A US 1925557A
- Authority
- US
- United States
- Prior art keywords
- photographic developer
- alkali
- substitute
- triethanolamine
- developer
- 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
- 239000003513 alkali Substances 0.000 title description 9
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 3
- 235000010265 sodium sulphite Nutrition 0.000 description 3
- 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 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Natural products CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical class [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- WUGQZFFCHPXWKQ-UHFFFAOYSA-N Propanolamine Chemical compound NCCCO WUGQZFFCHPXWKQ-UHFFFAOYSA-N 0.000 description 1
- MZVQCMJNVPIDEA-UHFFFAOYSA-N [CH2]CN(CC)CC Chemical group [CH2]CN(CC)CC MZVQCMJNVPIDEA-UHFFFAOYSA-N 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011182 sodium carbonates Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Definitions
- This invention relates to a photographic developer and particularly to one in which the usual alkalies are substituted by a class of compounds new for the purpose.
- Alkaline developers have now been known and used for many years. These developers usually contain developing agents, a so-called preservative, such as sodium sulphite, and alkalies, such as sodium or potassium carbonates, or sodium or potassium hydroxides. In recent years various sensitive materials and photographic processes have appeared with which the use of these stronger alkalies is objectionable for one reason or another. It is an object of this invention to provide substances which may be used in a photographic developer in place of these stronger alkalies and to provide developers giving satisfactory results without the objectionable features of those containing the alkalies previously used.
- preservative such as sodium sulphite
- alkalies such as sodium or potassium carbonates, or sodium or potassium hydroxides.
- alkali substitutes are the alkyl amines, particularly those containing one or more hydroxy alkyl groups. Triethanolamine and its homologues are representative examples. Of this preferred class of substances the following are especially useful:
- Example I Monomethylparaminophenol sulphate 2 grams Hydroquinone Sgrams Sodium sulphite 100 grams Triethanolamine, 90% solution 2 c. 0. Water to 1 liter
- Example II Monomethylparaminophenol sulphate 0.75 grams Hydroquinone 3.75 grams Sodium sulphite 30.0 grams Triethanolamine, 90% solution 15 c. 0. Water to 1 liter
- triethanolamine acts not only as an alkali, but prevents excessive sludging in the developer.
- each R is an alkyl group
- each alkyl group does not contain more than 3 carbon atoms.
- the soluble compounds function very satisfactorily.
- a photographic developer comprising a developing agent and a compound having the general formula R where any R may be an alkyl group. or an hydroxy alkyl group, and X is a hydroxy alkyl group.
- a photographic developer comprising a de-
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Patented Sept. 5, 1933 UNITED STATES PHOTOGRAPHIC DEVELOPER WITH ALKALI SUBSTITUTE Merle L. Dundon, Rochester, N. Y., assignor to Eastman Kodak C0mpany, R0chester, N. Y., a corporation of New York No Drawing. Application February 2, 1932 Serial No. 590,520
6 Claims.
This invention relates to a photographic developer and particularly to one in which the usual alkalies are substituted by a class of compounds new for the purpose.
Alkaline developers have now been known and used for many years. These developers usually contain developing agents, a so-called preservative, such as sodium sulphite, and alkalies, such as sodium or potassium carbonates, or sodium or potassium hydroxides. In recent years various sensitive materials and photographic processes have appeared with which the use of these stronger alkalies is objectionable for one reason or another. It is an object of this invention to provide substances which may be used in a photographic developer in place of these stronger alkalies and to provide developers giving satisfactory results without the objectionable features of those containing the alkalies previously used.
Substances which I have found suitable as alkali substitutes are the alkyl amines, particularly those containing one or more hydroxy alkyl groups. Triethanolamine and its homologues are representative examples. Of this preferred class of substances the following are especially useful:
1. Monoethanolamine ./H N-GHzCHzOH H 2. Diethanolamine /H NCH2CH2OH omcmon 3. Triethanolamine 4. fl diethylamino ethyl alcohol 5. Tri-n-propylamine CHzCHzCHa The. following formulas will serve to illustrate my invention:
is commercially I Example I Monomethylparaminophenol sulphate 2 grams Hydroquinone Sgrams Sodium sulphite 100 grams Triethanolamine, 90% solution 2 c. 0. Water to 1 liter Example II Monomethylparaminophenol sulphate 0.75 grams Hydroquinone 3.75 grams Sodium sulphite 30.0 grams Triethanolamine, 90% solution 15 c. 0. Water to 1 liter In formulas such as these, triethanolamine acts not only as an alkali, but prevents excessive sludging in the developer.
Some of the substances included in my broad definition are not useful because they are not sufficiently soluble in the developer. Thus, the homologues of triethanolamine above propanolamine are not sufficiently soluble to be useful. The tertiary amines,
in which each R is an alkyl group, are soluble when each alkyl group does not contain more than 3 carbon atoms. The soluble compounds, however, function very satisfactorily.
I consider as included in my invention all modifications and equivalents coming within the scope of the appended claims.
What I claim is:
1. A photographic developer comprising a developing agent and a compound having the general formula R where any R may be an alkyl group. or an hydroxy alkyl group, and X is a hydroxy alkyl group.
a de- MIERLE L. DUNDON.
2. A photographic developer comprising a de-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US590520A US1925557A (en) | 1932-02-02 | 1932-02-02 | Photographic developer with alkali substitute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US590520A US1925557A (en) | 1932-02-02 | 1932-02-02 | Photographic developer with alkali substitute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1925557A true US1925557A (en) | 1933-09-05 |
Family
ID=24362570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US590520A Expired - Lifetime US1925557A (en) | 1932-02-02 | 1932-02-02 | Photographic developer with alkali substitute |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1925557A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882152A (en) * | 1957-06-21 | 1959-04-14 | Malon H Dickerson | High speed developers |
| US3043688A (en) * | 1959-05-20 | 1962-07-10 | Eastman Kodak Co | Photographic colloid transfer process |
| DE1950369A1 (en) * | 1969-10-06 | 1971-04-22 | Polaroid Corp | Photographic developer compositions stabilised for - storage |
| DE2344074A1 (en) | 1972-09-01 | 1974-03-14 | Fuji Photo Film Co Ltd | PHOTOGRAPHIC DEVELOPER COMPOSITION |
| FR2412097A1 (en) * | 1977-12-16 | 1979-07-13 | Du Pont | HIGH CONTRAST CONTINUOUS TONE DEVELOPER AND PROCESS FOR USE |
| US4170478A (en) * | 1977-06-06 | 1979-10-09 | Eastman Kodak Company | Photographic color developer compositions |
| FR2422188A1 (en) * | 1978-04-05 | 1979-11-02 | Kodak Pathe | Diffusion transfer photographic process - using synergic combination of benzyl alcohol and aminoalcohol in basic developing compsn. to improve sensitometric properties |
| US5155014A (en) * | 1989-09-04 | 1992-10-13 | Agfa-Gevaert, N.V. | Method of developing direct positive silver halide material |
| US5340705A (en) * | 1989-05-18 | 1994-08-23 | Agfa-Gevaert, N.V. | Processing liquid for use in silver complex diffusion transfer processing |
| US5660972A (en) * | 1994-03-16 | 1997-08-26 | Mitsubishi Paper Mills Limited | Method for photographic development using a filter to inhibit occurrence of silver sludges |
-
1932
- 1932-02-02 US US590520A patent/US1925557A/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882152A (en) * | 1957-06-21 | 1959-04-14 | Malon H Dickerson | High speed developers |
| US3043688A (en) * | 1959-05-20 | 1962-07-10 | Eastman Kodak Co | Photographic colloid transfer process |
| DE1950369A1 (en) * | 1969-10-06 | 1971-04-22 | Polaroid Corp | Photographic developer compositions stabilised for - storage |
| DE2344074A1 (en) | 1972-09-01 | 1974-03-14 | Fuji Photo Film Co Ltd | PHOTOGRAPHIC DEVELOPER COMPOSITION |
| DE2344074C2 (en) | 1972-09-01 | 1984-04-05 | Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa | Photographic lith developer |
| US4170478A (en) * | 1977-06-06 | 1979-10-09 | Eastman Kodak Company | Photographic color developer compositions |
| FR2412097A1 (en) * | 1977-12-16 | 1979-07-13 | Du Pont | HIGH CONTRAST CONTINUOUS TONE DEVELOPER AND PROCESS FOR USE |
| US4172728A (en) * | 1977-12-16 | 1979-10-30 | E. I. Du Pont De Nemours And Company | High contrast continuous tone developer and process of use |
| FR2422188A1 (en) * | 1978-04-05 | 1979-11-02 | Kodak Pathe | Diffusion transfer photographic process - using synergic combination of benzyl alcohol and aminoalcohol in basic developing compsn. to improve sensitometric properties |
| US5340705A (en) * | 1989-05-18 | 1994-08-23 | Agfa-Gevaert, N.V. | Processing liquid for use in silver complex diffusion transfer processing |
| US5155014A (en) * | 1989-09-04 | 1992-10-13 | Agfa-Gevaert, N.V. | Method of developing direct positive silver halide material |
| US5660972A (en) * | 1994-03-16 | 1997-08-26 | Mitsubishi Paper Mills Limited | Method for photographic development using a filter to inhibit occurrence of silver sludges |
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