Claims
- 1. 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.sup.1 is --CH.sub.2 COOH or ##STR17## each R.sup.2 is hydrogen or --COOH p is 0 or 1, and
- X represents the atoms necessary to complete an aromatic nucleus.
- 2. 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.sup.3 is --CH.sub.2 --COOH, or ##STR19## each R.sup.4 is hydrogen or --COOH, each R.sup.5, R.sup.6, R.sup.7 and R.sup.8 is hydrogen, --COOH, --SO.sub.3 H, alkyl of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO.sub.3 H, or --OH group, alkoxy of 1 to 4 carbon atoms optionally substituted by a --COOH, --SO.sub.3 H or --OH group or
- each R.sup.6 together with R.sup.5 or R.sup.7, or each R.sup.8 together with R.sup.7 represents a fused benzene ring, and
- p is 0 or 1.
- 3. A photographic color developing composition as claimed in claim 2 wherein each R.sup.3 is --CH.sub.2 --COOH.
- 4. A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.
- 5. A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is an aminophenol.
- 6. 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.
- 7. 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.
- 8. A photographic color developing composition as claimed in claim 1 wherein said hydroxylamine is hydroxylamine sulfate.
- 9. A photographic color developing composition as claimed in claim 1 further containing an additional sequestering agent.
- 10. A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is nitrilotriacetic acid.
- 11. A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is ethylenediaminetetraacetic acid.
- 12. 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.
- 13. A photographic color developing composition as claimed in claim 9 wherein said additional sequestering agent is diethylenetriaminepentaacetic acid.
- 14. A photographic color developing composition as claimed in claim 1 further containing an aminopolyphosphonic acid sequestering agent.
- 15. 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.
- 16. 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.
- 17. 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.
- 18. 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.
- 19. 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.
- 20. 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.sup.1 is --CH.sub.2 COOH or ##STR21## each R.sup.2 is hydrogen or --COOH p is 0 or 1, and
- X represents the atoms necessary to complete an aromatic nucleus.
- 21. A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.
- 22. A process as claimed in claim 20 wherein said primary aromatic amino color developing agent is an aminophenol.
- 23. 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.
- 24. 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.
- 25. A process as claimed in claim 20 wherein said color developing composition further contains an additional sequestering agent.
- 26. 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.
- 27. 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.sup.1 is --CH.sub.2 COOH or ##STR23## each R.sup.2 is hydrogen or --COOH p is 0 or 1, and
- X represents the atoms necessary to complete an aromatic nucleus.
- 28. 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.
- 29. 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.
- 30. 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.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8212463 |
Apr 1982 |
GBX |
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Parent Case Info
This is a continuation of application Ser. No. 474,772, filed Mar. 14, 1983 now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
25633 |
Feb 1977 |
JPX |
Non-Patent Literature Citations (1)
Entry |
"Sequestrants and Hydroxylamine Stability" by P. J. Twist, 1982 International Congress of Photographic Science, Cambridge, U.K., Sep. 6-10, 1982. |
Continuations (1)
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Number |
Date |
Country |
Parent |
474772 |
Mar 1983 |
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