US4142895A — Photographic color developer composition

Claim 1

Independent Claim 241 words

Photographic color developer composition for color development containing a developer compound of the p-phenylene diamine series, an antioxidizing agent comprised of an α-aminocarbonyl compound, a compound which stabilizes the antioxidizing agent and a sequestering agent, characterized in that compound which stabilizes the antioxidizing agent is a complex-forming organophosphonic acid or a water soluble salt of this acid, which inhibits decomposition of the α-aminocarbonyl compound, and the sequestering agent used is an aminocarboxylic acid or a water soluble salt of this acid and the α-aminocarbonyl compound is represented by the following general formula I or the corresponding enol form: ##STR14## in which R 1 , R 2 , R 3 and R 4 which may be the same or different, represent hydrogen; hydrocarbon groups, including alkyl, cycloalkyl or aryl groups, which groups may in turn be substituted, or 5-membered or 6-membered heterocyclic groups containing N and/or O and/or S as ring members, provided that not all four of the groups R 1 , r 2 , r 3 and R 4 may be hydrogen; on in which R 1 and R 2 together represent the atoms required to complete a heterocyclic ring and/or R 2 and R 3 together represent the atoms required to complete a heterocyclic ring and/or R 3 and R 4 together represent the atoms required to complete a heterocyclic or carbocyclic ring and/or R 4 and R 1 together represent the atoms required to complete a heterocyclic ring.

Claim 2

Dependent Claim 241 words

Photographic color developer composition for color development containing a developer compound of the p-phenylene diamine series, an antioxidizing agent comprised of an α-aminocarbonyl compound, a compound which stabilizes the antioxidizing agent and a sequestering agent, characterized in that compound which stabilizes the antioxidizing agent is a complex-forming organophosphonic acid or a water soluble salt of this acid, which inhibits decomposition of the α-aminocarbonyl compound, and the sequestering agent used is an aminocarboxylic acid or a water soluble salt of this acid and the α-aminocarbonyl compound is represented by the following general formula I or the corresponding enol form: ##STR14## in which R 1 , R 2 , R 3 and R 4 which may be the same or different, represent hydrogen; hydrocarbon groups, including alkyl, cycloalkyl or aryl groups, which groups may in turn be substituted, or 5-membered or 6-membered heterocyclic groups containing N and/or O and/or S as ring members, provided that not all four of the groups R 1 , r 2 , r 3 and R 4 may be hydrogen; on in which R 1 and R 2 together represent the atoms required to complete a heterocyclic ring and/or R 2 and R 3 together represent the atoms required to complete a heterocyclic ring and/or R 3 and R 4 together represent the atoms required to complete a heterocyclic or carbocyclic ring and/or R 4 and R 1 together represent the atoms required to complete a heterocyclic ring.

Claim 3

Dependent Claim 102 words

Color developer composition according to claim 1, containing an organo phosphonic acid or a water-soluble salt of the acid represented by the general formula R.sup.5 R.sup.6 C(PO.sub.3 M).sub.2 in which R 5 represents a hydrogen atom, an alkyl group preferably having from 1 to 4 carbon atoms, which may be substituted, an aryl group which may be substituted, an aralkyl group, an alicyclic group, a heterocyclic group or a PO 3 M 2 -group; R 6 represents a hydrogen atom, a hydroxyl group or an alkyl group which may be substituted; M represents a hydrogen atom, water-solubilizing atom, or a water-solubilizing group.

Claim 4

Dependent Claim 64 words

Colour developer composition according to claim 1, characterized in that it contains, as antioxidising agent, a compound of the following formula II ##STR15## in which R 1 to R 2 together represent the atoms required to complete a heterocyclic ring and R 3 and R 4 which may be the same or different, represent hydrogen, alkyl, including substituted alkyl groups, aryl or heterocyclic groups.

Claim 5

Dependent Claim 64 words

Colour developer composition according to claim 1, characterised in that it contains, as antioxidising agent, a compound represented by the following formula III ##STR16## in which R 1 and R 4 which may be the same or different, represent hydrogen, alkyl including substituted alkyl groups, aryl or heterocyclic groups; R 2 and R 3 together represent the atoms required to complete a heterocyclic ring.

Claim 6

Dependent Claim 67 words

Colour developer composition according to claim 1, characterized in that it contains, as antioxidising agent, a compound represented by the following formula IV: ##STR17## in which R 1 and R 2 which may be the same or different, represent hydrogen or alkyl, including substituted alkyl groups, aryl or heterocyclic groups; R 3 and R 4 together represent the atoms required to complete a heterocyclic or carbocyclic ring.

Claim 7

Dependent Claim 64 words

Colour developer composition according to claim 1, characterised in that it contains, as antioxidising agent, a compound represented by the following formula V: ##STR18## in which R 1 and R 4 together represent the atoms required to complete a heterocyclic ring, R 2 and R 3 which may be the same or different, represent hydrogen, alkyl, including substituted alkyl groups, aryl or heterocyclic groups.

Claim 8

Dependent Claim 37 words

Colour developer composition according to claim 1, characterised in that it contains at least one of the following amino carboxylic acids or a water soluble salt thereof: ethylenediaminetetraacetic acid, 2-hydroxypropane-1,3-diaminetetraacetic acid, diethylenetriaminepentaacetic acid, N-hydroxyethyl-ethylenediaminetriacetic acid, cyclohexane-1,2-diaminetetraacetic acid.

Claim 9

Dependent Claim 34 words

Colour developer composition according to claim 1, characterised in that it contains at least one of the following organophosphonic acids or a water soluble salt thereof: 1-hydroxyethane-1,1-diphosphonic acid, ethane-1,1,1-triphosphonic acid, 1-hydroxypropane-1,1-diphosphonic acid 1-hydroxy-2-phenylethane-1,1-diphosphonic acid.

Claim 10

Dependent Claim 29 words

Colour developer composition according to claim 1, characterised in that at least one of the groups represented by R 3 and R 4 is a hydroxyl substituted alkyl group.

Claim 11

Dependent Claim 15 words

Colour developer composition according to claim 1, characterised in that it contains D-glucosamine or 1-desoxy-1-piperidino-D-fructose.

Claim 12

Dependent Claim 22 words

Colour developer composition according to claim 1, characterised in that it contains 1-hydroxyethane-1,1-diphosphonic acid or a water soluble salt of this acid.

Claim 13

Dependent Claim 22 words

Colour developer composition according to claim 1, characterised in that it contains ethylenediaminetetraacetic acid or a water soluble salt of this acid.

Claim 14

Dependent Claim 24 words

Colour developer composition according to claim 1, characterised in that it contains D-glucosamine, 1-hydroxyethane-1,1-diphosphonic acid and ethylenediaminetetraacetic acid or a water soluble salt thereof.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1982-03-05	1982-09-04	1983-03-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1986-03-05	1986-09-04	1987-03-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1990-03-05	1990-09-04	1991-03-06	$7700.00	Window Closed / Lapsed

Photographic color developer composition

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag