Patent US4429732A successfully refreshed from Google Patents.
Patent US4482626A successfully refreshed from Google Patents.
US4482626A
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Photographic color developer compositions
Assignee: Eastman Kodak Co
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Filing: 1984-03-30
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Granted: 1984-11-13
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Expires: 2004-03-30
Abstract
Abstract Photographic color developer compositions containing a primary aromatic amino color developing agent and an hydroxylamine are stabilized by incorporating therein certain polyamino stabilizing agents, such as N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid. Decomposition of the hydroxylamine, in the presence of heavy metals such as iron which act to catalyze the decomposition, and resultant formation of ammonia is effectively prevented by the presence in the developer composition of such stabilizing agents. Undesirable precipitate formation is also effectively avoided.
Inventors
- 👤 Peter J. Twist
- 👤 Joseph Bailey
- 👤 Stuart P. Briggs
- 👤 Miroslav V. Mijovic
- 👤 David T. Southby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413; G03C7/392; G03C7/39208
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
58 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR16## wherein each R 1 is --CH 2 COOH or ##STR17## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 2
Dependent Claim
58 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR16## wherein each R 1 is --CH 2 COOH or ##STR17## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 3
Dependent Claim
127 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR18## wherein each R 3 is --CH 2 --COOH, or ##STR19## each R 4 is hydrogen or --COOH, each R 5 , R 6 , R 7 and R 8 is hydrogen, --COOH, --SO 3 H, alkyl of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO 3 H, or --OH group, alkoxy of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO 3 H or --OH group or each R 6 together with R 5 or R 7 , or each R 8 together with R 7 represents a fused benzene ring, and p is 0 or 1.
Claim 4
Dependent Claim
127 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR18## wherein each R 3 is --CH 2 --COOH, or ##STR19## each R 4 is hydrogen or --COOH, each R 5 , R 6 , R 7 and R 8 is hydrogen, --COOH, --SO 3 H, alkyl of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO 3 H, or --OH group, alkoxy of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO 3 H or --OH group or each R 6 together with R 5 or R 7 , or each R 8 together with R 7 represents a fused benzene ring, and p is 0 or 1.
Claim 5
Dependent Claim
18 words
A photographic color developing composition as claimed in claim 2 wherein each R 3 is --CH 2 --COOH.
Claim 6
Dependent Claim
21 words
A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.
Claim 7
Dependent Claim
21 words
A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is an aminophenol.
Claim 8
Dependent Claim
22 words
A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate.
Claim 9
Dependent Claim
21 words
A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate.
Claim 10
Dependent Claim
16 words
A photographic color developing composition as claimed in claim 1 wherein said hydroxylamine is hydroxylamine sulfate.
Claim 11
Dependent Claim
16 words
A photographic color developing composition as claimed in claim 1 further containing an additional sequestering agent.
Claim 12
Dependent Claim
18 words
A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is nitrilotriacetic acid.
Claim 13
Dependent Claim
18 words
A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is ethylenediaminetetraacetic acid.
Claim 14
Dependent Claim
18 words
A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is 1,3-diamino-2-propanol-N,N,N',N'-tetraacetic acid.
Claim 15
Dependent Claim
18 words
A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is diethylenetriaminepentaacetic acid.
Claim 16
Dependent Claim
17 words
A photographic color developing composition as claimed in claim 1 further containing an aminopolyphosphonic acid sequestering agent.
Claim 17
Dependent Claim
31 words
A photographic color developing composition as claimed in claim 1 wherein compound (3) is selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 18
Dependent Claim
17 words
A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, and (3) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 19
Dependent Claim
17 words
A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, and (3) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 20
Dependent Claim
16 words
A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate, (2) hydroxylamine sulfate, and (3) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 21
Dependent Claim
16 words
A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate, (2) hydroxylamine sulfate, and (3) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 22
Dependent Claim
24 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, (3) nitrilotriacetic acid, and (4) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 23
Dependent Claim
24 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, (3) nitrilotriacetic acid, and (4) N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 24
Dependent Claim
24 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, (3) nitrilotriacetic acid, and (4) N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 25
Dependent Claim
24 words
A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, (3) nitrilotriacetic acid, and (4) N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 26
Dependent Claim
71 words
A process of color developing a photographic element which comprises contacting said element with a color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR20## wherein each R 1 is --CH 2 COOH or ##STR21## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 27
Dependent Claim
71 words
A process of color developing a photographic element which comprises contacting said element with a color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a compound of the formula: ##STR20## wherein each R 1 is --CH 2 COOH or ##STR21## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 28
Dependent Claim
18 words
A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.
Claim 29
Dependent Claim
18 words
A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is an aminophenol.
Claim 30
Dependent Claim
19 words
A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is 4-(N-ethyl-N-2-methane-sulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate.
Claim 31
Dependent Claim
18 words
A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate.
Claim 32
Dependent Claim
18 words
A process as claimed in claim 20 wherein said color developing composition further contains an additional sequestering agent.
Claim 33
Dependent Claim
28 words
A process as claimed in claim 20 wherein compound (3) is selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 34
Independent Claim
70 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of a compound of the formula: ##STR22## wherein each R 1 is --CH 2 COOH or ##STR23## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 35
Independent Claim
70 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of a compound of the formula: ##STR22## wherein each R 1 is --CH 2 COOH or ##STR23## each R 2 is hydrogen or --COOH p is 0 or 1, and X represents the atoms necessary to complete an aromatic nucleus.
Claim 36
Independent Claim
50 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of a compound selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 37
Independent Claim
50 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of a compound selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 38
Independent Claim
69 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of both a compound selected from the group consisting of: nitrilotriacetic acid ethylenediaminetetraacetic acid 1,3-diamino-2-propanol-N,N,N',N'-tetraacetic acid, and diethylenetriaminepentaacetic acid and a compound selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 39
Independent Claim
69 words
A method of stabilizing a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, which method comprises incorporating in said composition a stabilizing amount of both a compound selected from the group consisting of: nitrilotriacetic acid ethylenediaminetetraacetic acid 1,3-diamino-2-propanol-N,N,N',N'-tetraacetic acid, and diethylenetriaminepentaacetic acid and a compound selected from the group consisting of: N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3-[2-carboxyethyl]-6-hydroxy-5-methoxybenzyl)ethylenediamine-N-N'-diacetic acid N,N'-bis(3-carboxymethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and N,N'-bis(3-sulfo-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 40
Independent Claim
31 words
A method of stabilizing a photographic color developing composition comprising 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate and hydroxylamine sulfate, which method comprises incorporating in said composition a stabilizing amount of nitrilotriacetic acid and N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
Claim 41
Independent Claim
31 words
A method of stabilizing a photographic color developing composition comprising 4-(N-ethyl-N-2-hydroxyethyl)-2-methylphenylenediamine sulfate and hydroxylamine sulfate, which method comprises incorporating in said composition a stabilizing amount of nitrilotriacetic acid and N,N'-bis(3,5-dimethyl-6-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid.
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) | 1987-11-13 | 1988-05-14 | 1988-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-13 | 1992-05-14 | 1992-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-13 | 1996-05-14 | 1996-11-13 | $7700.00 | Window Closed / Lapsed |