Photographic color developer compositions

Claim 2

A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound that forms a complex with ferric ion in alkaline solution in which the molar ratio of the ferric ion to the aromatic polyhydroxy compound is 1 to 3, said aromatic polyhydroxy compound having at least two hydroxy groups in ortho-position in relation to each other on an aromatic carbocyclic ring and being free of exocyclic unsaturation.

Claim 3

A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.

Claim 4

A photographic color developing composition as claimed in claim 1 wherein said primary aromatic amino color developing agent is an aminophenol.

Claim 5

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 6

A photographic color developing composition as claimed in claim 1 wherein said hydroxylamine is hydroxylamine sulfate.

Claim 7

A photographic color developing composition as claimed in claim 1 wherein said combination of sequestering agents comprises ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulonic acid.

Claim 8

A photographic color developing composition as claimed in claim 1 wherein said combination of sequestering agents comprises diethylenetriamine pentamethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 9

A photographic color developing composition as claimed in claim 1 wherein said combination of sequestering agents comprises nitrilo-N,N,N-trimethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 10

A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of: (a) amino-N,N-dimethylenephosphonic acids of the formula: R.sup.3 --N(CH.sub.2 PO.sub.3 M.sub.2).sub.2 wherein M is a hydrogen atom or a monovalent cation and R 3 is an alkyl group, an aryl group, an aralkyl group, an alkaryl group, an alicyclic group, or a heterocyclic radical, (b) aminodiphosphonic acids of the formula: ##STR11## wherein R 4 is an alkyl group, and (c) N-acyl aminodiphosphonic acids of the formula: ##STR12## wherein each of R 5 , R 6 and R 7 is a hydrogen atom or an alkyl group, and another of which is an aromatic polyhydroxy compound of the formula: ##STR13## wherein X represents the carbon atoms necessary to complete a benzene or naphthalene aromatic ring structure.

Claim 11

A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of: (a) amino-N,N-dimethylenephosphonic acids of the formula: R.sup.3 --N(CH.sub.2 PO.sub.3 M.sub.2).sub.2 wherein M is a hydrogen atom or a monovalent cation and R 3 is an alkyl group, an aryl group, an aralkyl group, an alkaryl group, an alicyclic group, or a heterocyclic radical, (b) aminodiphosphonic acids of the formula: ##STR11## wherein R 4 is an alkyl group, and (c) N-acyl aminodiphosphonic acids of the formula: ##STR12## wherein each of R 5 , R 6 and R 7 is a hydrogen atom or an alkyl group, and another of which is an aromatic polyhydroxy compound of the formula: ##STR13## wherein X represents the carbon atoms necessary to complete a benzene or naphthalene aromatic ring structure.

Claim 12

A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of nitrilo-N,N,N-trimethylenephosphonic acid, ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid, and diethylenetriamine pentamethylenephosphonic acid, and another of which is an aromatic polyhydroxy compound selected from the group consisting of

Claim 13

A photographic color developing composition comprising: (1) a primary aromatic amino color developing agent, (2) an hydroxylamine, and (3) a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of nitrilo-N,N,N-trimethylenephosphonic acid, ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid, and diethylenetriamine pentamethylenephosphonic acid, and another of which is an aromatic polyhydroxy compound selected from the group consisting of

Claim 14

5-dihydroxy-m-benzene disulfonic acid disodium salt, pyrogallol, propyl gallate, gallic acid and methyl gallate.

Claim 15

5-dihydroxy-m-benzene disulfonic acid disodium salt, pyrogallol, propyl gallate, gallic acid and methyl gallate.

Claim 16

A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, (3) nitrilo-N,N,N-trimethylenephosphonic acid pentasodium salt, and (4) 4,5-dihydroxy-m-benzene disulfonic acid disodium salt.

Claim 17

A photographic color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, (3) nitrilo-N,N,N-trimethylenephosphonic acid pentasodium salt, and (4) 4,5-dihydroxy-m-benzene disulfonic acid disodium salt.

Claim 18

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound that forms a complex with ferric ion in alkaline solution in which the molar ratio of the ferric ion to the aromatic polyhydroxy compound is 1 to 3, said aromatic polyhydroxy compound having at least two hydroxy groups in ortho-position in relation to each other on an aromatic carboxylic ring and being free of exocyclic unsaturation.

Claim 19

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound that forms a complex with ferric ion in alkaline solution in which the molar ratio of the ferric ion to the aromatic polyhydroxy compound is 1 to 3, said aromatic polyhydroxy compound having at least two hydroxy groups in ortho-position in relation to each other on an aromatic carboxylic ring and being free of exocyclic unsaturation.

Claim 20

A process as claimed in claim 12 wherein said primary aromatic amino color developing agent is a p-phenylenediamine.

Claim 21

A process as claimed in claim 12 wherein said primary aromatic amino color developing agent is an aminophenol.

Claim 22

A process as claimed in claim 12 wherein said primary aromatic amino color developing agent is 4-(N-ethyl-N-2-methane-sulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate.

Claim 23

A process as claimed in claim 12 wherein said hydroxylamine is hydroxylamine sulfate.

Claim 24

A process as claimed in claim 12 wherein said combination of sequestering agents comprises ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 25

A process as claimed in claim 12 wherein said combination of sequestering agents comprises diethylenetriamine pentamethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 26

A process as claimed in claim 12 wherein said combination of sequestering agents comprises nitrilo-N,N,N-trimethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 27

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of: (a) amino-N,N-dimethylenephosphonic acids of the formula: R.sup.3 --N(CH.sub.2 PO.sub.3 M.sub.2).sub.2 wherein M is a hydrogen atom or a monovalent cation and R 3 is an alkyl group, an aryl group, an aralkyl group, an alkaryl group, an alicyclic group or a heterocyclic radical, (b) aminodiphosphonic acids of the formula: ##STR14## wherein R 4 is an alkyl group, and (c) N-acyl aminodiphosphonic acids of the formula: ##STR15## wherein each of R 5 , R 6 and R 7 is a hydrogen atom or an alkyl group, and another of which is an aromatic polyhydroxy compound of the formula: ##STR16## wherein X represents the carbon atoms necessary to complete a benzene or naphthalene aromatic ring structure.

Claim 28

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of: (a) amino-N,N-dimethylenephosphonic acids of the formula: R.sup.3 --N(CH.sub.2 PO.sub.3 M.sub.2).sub.2 wherein M is a hydrogen atom or a monovalent cation and R 3 is an alkyl group, an aryl group, an aralkyl group, an alkaryl group, an alicyclic group or a heterocyclic radical, (b) aminodiphosphonic acids of the formula: ##STR14## wherein R 4 is an alkyl group, and (c) N-acyl aminodiphosphonic acids of the formula: ##STR15## wherein each of R 5 , R 6 and R 7 is a hydrogen atom or an alkyl group, and another of which is an aromatic polyhydroxy compound of the formula: ##STR16## wherein X represents the carbon atoms necessary to complete a benzene or naphthalene aromatic ring structure.

Claim 29

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of nitrilo-N,N,N-trimethylenephosphonic acid, ethylenediamine-N,N,N-tetramethylenephosphonic acid, and diethylenetriamine pentamethylenephosphonic acid, and another of which is an aromatic polyhydroxy compound selected from the group consisting of 4,5-dihydroxy-m-benzene disulfonic acid disodium salt, pyrogallol, propyl gallate, gallic acid and methyl gallate.

Claim 30

A process of color developing an imagewise-exposed 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 combination of sequestering agents, one of which is an aminopolyphosphonic acid compound selected from the group consisting of nitrilo-N,N,N-trimethylenephosphonic acid, ethylenediamine-N,N,N-tetramethylenephosphonic acid, and diethylenetriamine pentamethylenephosphonic acid, and another of which is an aromatic polyhydroxy compound selected from the group consisting of 4,5-dihydroxy-m-benzene disulfonic acid disodium salt, pyrogallol, propyl gallate, gallic acid and methyl gallate.

Claim 31

A process of color developing an imagewise-exposed photographic element which comprises contacting said element with a color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, (3) nitrilo-N,N,N-trimethylenephosphonic acid pentasodium salt, and (4) 4,5-dihydroxy-m-benzene disulfonic acid disodium salt.

Claim 32

A process of color developing an imagewise-exposed photographic element which comprises contacting said element with a color developing composition comprising: (1) 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate, (2) hydroxylamine sulfate, (3) nitrilo-N,N,N-trimethylenephosphonic acid pentasodium salt, and (4) 4,5-dihydroxy-m-benzene disulfonic acid disodium salt.

Claim 35

A method as claimed in claim 23 wherein said combination of sequestering agents comprises ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 36

A method as claimed in claim 23 wherein said combination of sequestering agents comprises diethylenetriamine pentamethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 37

A method as claimed in claim 23 wherein said combination of sequestering agents comprises nitrilo-N,N,N-trimethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 38

A sequestering composition adapted for use in a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, said sequestering composition comprising a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound that forms a complex with ferric ion in alkaline solution in which the molar ratio of the ferric ion to the aromatic polyhydroxy compound is 1 to 3, said aromatic polyhydroxy compound having at least two hydroxy groups in ortho-position in relation to each other on an aromatic carbocyclic ring and being free of exocyclic unsaturation.

Claim 39

A sequestering composition adapted for use in a photographic color developing composition comprising a primary aromatic amino color developing agent and an hydroxylamine, said sequestering composition comprising a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound that forms a complex with ferric ion in alkaline solution in which the molar ratio of the ferric ion to the aromatic polyhydroxy compound is 1 to 3, said aromatic polyhydroxy compound having at least two hydroxy groups in ortho-position in relation to each other on an aromatic carbocyclic ring and being free of exocyclic unsaturation.

Claim 40

A composition as claimed in claim 27 wherein said combination of sequestering agents comprises ethylenediamine-N,N,N',N'-tetramethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 41

A composition as claimed in claim 27 wherein said combination of sequestering agents comprises diethylenetriamine pentamethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.

Claim 42

A composition as claimed in claim 27 wherein said combination of sequestering agents comprises nitrilo-N,N,N-trimethylenephosphonic acid and 4,5-dihydroxy-m-benzene disulfonic acid.