Patent US3887597A successfully refreshed from Google Patents.
US3887597A
Expired / Lapsed
US
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Process for producing an organic silver carboxylate
Assignee: Fujifilm Holdings Corp
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Filing: 1973-05-02
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Granted: 1975-06-03
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Expires: 1993-05-02
Abstract
Abstract A process for producing a silver salt of an organic carboxylic acid which comprises mixing an aqueous silver nitrate solution or an aqueous silver complex solution with an organic carboxylic acid solution in the presence of a lead compound(s) and/or a mercury compound(s) to obtain the salt of the organic carboxylic acid. The product is employed in a thermally developable lightsensitive element.
Inventors
- 👤 Kinji Ohkubo
- 👤 Takao Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:59
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49809; C; C07; C07C; C07C51/00; C07C51/41; C07C51/412
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
98 words
IN A PROCESS OF PRODUCING SILVER SALT OF A LONG CHAIN ALIPHATIC CARBOXYLIC ACID WHICH COMPRISES MIXING AN AQUEOUS SILVER NITRATE SOLUTION OR AN AQUEOUS SILVER COMPLEX SOLUTION WITH A SOLUTON OF A CARBOXYLIC ACID IN A SOLVENT IN WHICH SAID CARBOXYLIC ACID IS SOLUBLE, BOTH SAID SILVER SALT OF THE CARBOXYLIC ACID AND SILVER NITRATE ARE ALMOST INSOLUBLE AND WITH WHICH WATER IS SPARINGLY MISCIBLE, TO REACT SAID CARBOXYLIC ACID WITH SILVER IONS, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION OF THE CARBOXYLIC ACID WITH SILVER IONS IN THE PRESENCE OF A MERCURY COMPOUND AND/OR LEAD COMPOUND.
Claim 2
Dependent Claim
98 words
IN A PROCESS OF PRODUCING SILVER SALT OF A LONG CHAIN ALIPHATIC CARBOXYLIC ACID WHICH COMPRISES MIXING AN AQUEOUS SILVER NITRATE SOLUTION OR AN AQUEOUS SILVER COMPLEX SOLUTION WITH A SOLUTON OF A CARBOXYLIC ACID IN A SOLVENT IN WHICH SAID CARBOXYLIC ACID IS SOLUBLE, BOTH SAID SILVER SALT OF THE CARBOXYLIC ACID AND SILVER NITRATE ARE ALMOST INSOLUBLE AND WITH WHICH WATER IS SPARINGLY MISCIBLE, TO REACT SAID CARBOXYLIC ACID WITH SILVER IONS, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION OF THE CARBOXYLIC ACID WITH SILVER IONS IN THE PRESENCE OF A MERCURY COMPOUND AND/OR LEAD COMPOUND.
Claim 3
Dependent Claim
98 words
In a process of producing silver salt of a long chain aliphatic carboxylic acid which comprises mixing an aqueous silver nitrate solution or an aqueous silver complex solution with a solution of a carboxylic acid in a solvent in which said carboxylic acid is soluble, both said silver salt of the carboxylic acid and silver nitrate are almost insoluble and with which water is sparingly miscible, to react said carboxylic acid with silver ions, the improvement which comprises conducting said reaction of the carboxylic acid with silver ions in the presence of a mercury compound and/or lead compound.
Claim 4
Dependent Claim
98 words
In a process of producing silver salt of a long chain aliphatic carboxylic acid which comprises mixing an aqueous silver nitrate solution or an aqueous silver complex solution with a solution of a carboxylic acid in a solvent in which said carboxylic acid is soluble, both said silver salt of the carboxylic acid and silver nitrate are almost insoluble and with which water is sparingly miscible, to react said carboxylic acid with silver ions, the improvement which comprises conducting said reaction of the carboxylic acid with silver ions in the presence of a mercury compound and/or lead compound.
Claim 5
Dependent Claim
14 words
The process of claim 1 where said reaction is conducted at the following ratios:
Claim 6
Dependent Claim
21 words
The process of claim 2 where the ratios are: (a) 2/1 - 1/100; (b) 2/1 - 1/2; (c) 10/1 - 100/1.
Claim 7
Dependent Claim
70 words
The process of claim 2 where the solvent meets the following criteria: less than 1 percent of the silver salt of the carboxylic acid is dissolved therein; less than 1 percent of the silver nitrate is dissolved therein; less than 1 percent of the silver complex is dissolved therein; the solvent is less than 35% soluble in water; the solvent completely dissolves the carboxylic acid, all percentages being by weight.
Claim 8
Dependent Claim
19 words
The process of claim 4 where the reaction is at -30 to +80*C for 1 second to 1 hour.
Claim 9
Dependent Claim
50 words
The process of claim 4 wherein said mercury compound or lead compound is used in the form of a solution or a dispersion in the aqueous silver nitrate solution, or a solution mixture of the solution of the carboxylic acid with a solution containing the mercury compound or lead compound.
Claim 10
Dependent Claim
18 words
The process of claim 6 wherein said long chain aliphatic carboxylic acid has greater than 10 carbon atoms.
Claim 11
Dependent Claim
32 words
The process of claim 7 wherein said long chain aliphatic carboxylic acid is selected from the group consisting of capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and behenic acid.
Claim 12
Dependent Claim
47 words
The process of claim 4 wherein said solvent is selected from the group consisting of a phosphoric acid ester, a phthalic acid ester or a carboxylic acid ester of an alcohol or a phenol, liquid at room temperature, and a glycerin ester of a higher fatty acid.
Claim 13
Dependent Claim
83 words
The process of claim 9 wherein said solvent is selected from the group consisting of tricresyl phosphate, tributyl phosphate, monooctyl dibutyl phosphate, diethyl phthalate, dibutyl phthalate, dimethyl phthalate, dioctyl phthalate, dimethoxyethyl phthalate, amyl acetate, isoamyl acetate, isobutyl acetate, isopropyl acetate, ethyl acetate, 2-ethyl butyl acetate, butyl acetate, propyl acetate, dioctyl sebacate, dibutyl sebacate, diethyl sebacate, diethyl succinate, ethyl formate, propyl formate, butyl formate, amyl formate, ethyl valerate, diethyl tartarate, methyl butyrate, ethyl butyrate, butyl butyrate, isoamyl butyrate, castor oil, benzene, toluene and xylene.
Claim 14
Dependent Claim
12 words
The process of claim 4 wherein the lead compound is used alone.
Claim 15
Dependent Claim
12 words
The process of claim 4 wherein the mercury compound is used alone.
Claim 16
Dependent Claim
14 words
The process of claim 4 wherein the lead and mercury compounds are uSed together.
Claim 17
Dependent Claim
21 words
The process of claim 4 wherein said carboxylic acid is selected from the group consisting of behenic acid and lauric acid.
Claim 18
Dependent Claim
17 words
The process of claim 4 wherein said solvent is selected from tricresyl phosphate, butyl acetate or benzene.
Claim 19
Dependent Claim
12 words
The process of claim 11 wherein said lead compound is lead nitrate.
Claim 20
Dependent Claim
50 words
The process of claim 12 wherein said mercury compound is selected from the group consisting of mercuric nitrate, mercuric acetate, mercuric sulfate, mercuric bromide, mercuric iodide, mercuric phenyl acetate, methyl mercuric chloride, ethyl mercuric chloride, phenyl mercury-p-toluene sulfanilide, benzyl mercury-p-toluene sulfanilide, mercuric chloranilate, 2-acetamino-1,3,4-thiadiazolyl-(5)-mercuric chloride and phenyl mercuric dinaphthylmethane disulfonate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |