WO1993011459A1 - Photographic bleach composition - Google Patents
Photographic bleach composition Download PDFInfo
- Publication number
- WO1993011459A1 WO1993011459A1 PCT/EP1992/002762 EP9202762W WO9311459A1 WO 1993011459 A1 WO1993011459 A1 WO 1993011459A1 EP 9202762 W EP9202762 W EP 9202762W WO 9311459 A1 WO9311459 A1 WO 9311459A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bleach solution
- formula
- bleach
- group
- acid
- Prior art date
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- 239000007844 bleaching agent Substances 0.000 title claims abstract description 57
- 239000000203 mixture Substances 0.000 title description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 46
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
- 239000003352 sequestering agent Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 6
- 150000003624 transition metals Chemical class 0.000 claims abstract description 6
- 230000000536 complexating effect Effects 0.000 claims abstract description 5
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 4
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 20
- -1 alkali metal salt Chemical class 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 6
- 229960003330 pentetic acid Drugs 0.000 claims description 6
- 125000005499 phosphonyl group Chemical group 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229920000388 Polyphosphate Polymers 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- 239000001205 polyphosphate Substances 0.000 claims description 5
- 235000011176 polyphosphates Nutrition 0.000 claims description 5
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 4
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 3
- XQRLCLUYWUNEEH-UHFFFAOYSA-N diphosphonic acid Chemical compound OP(=O)OP(O)=O XQRLCLUYWUNEEH-UHFFFAOYSA-N 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 claims description 3
- VZYDKJOUEPFKMW-UHFFFAOYSA-N 2,3-dihydroxybenzenesulfonic acid Chemical compound OC1=CC=CC(S(O)(=O)=O)=C1O VZYDKJOUEPFKMW-UHFFFAOYSA-N 0.000 claims description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- 239000011885 synergistic combination Substances 0.000 claims description 2
- 125000002843 carboxylic acid group Chemical group 0.000 claims 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 description 10
- 230000003019 stabilising effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 238000004061 bleaching Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 3
- ISWQCIVKKSOKNN-UHFFFAOYSA-L Tiron Chemical compound [Na+].[Na+].OC1=CC(S([O-])(=O)=O)=CC(S([O-])(=O)=O)=C1O ISWQCIVKKSOKNN-UHFFFAOYSA-L 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 239000013068 control sample Substances 0.000 description 3
- TVHALOSDPLTTSR-UHFFFAOYSA-H hexasodium;[oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O TVHALOSDPLTTSR-UHFFFAOYSA-H 0.000 description 3
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- XNCSCQSQSGDGES-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]propyl-(carboxymethyl)amino]acetic acid Chemical compound OC(=O)CN(CC(O)=O)C(C)CN(CC(O)=O)CC(O)=O XNCSCQSQSGDGES-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 125000001118 alkylidene group Chemical group 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFMQNMXVVXHZCC-UHFFFAOYSA-N 1,3-benzothiazol-2-yl n,n-diethylcarbamodithioate Chemical compound C1=CC=C2SC(SC(=S)N(CC)CC)=NC2=C1 LFMQNMXVVXHZCC-UHFFFAOYSA-N 0.000 description 1
- PAOHAQSLJSMLAT-UHFFFAOYSA-N 1-butylperoxybutane Chemical compound CCCCOOCCCC PAOHAQSLJSMLAT-UHFFFAOYSA-N 0.000 description 1
- CJAZCKUGLFWINJ-UHFFFAOYSA-N 3,4-dihydroxybenzene-1,2-disulfonic acid Chemical compound OC1=CC=C(S(O)(=O)=O)C(S(O)(=O)=O)=C1O CJAZCKUGLFWINJ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- KQNZLOUWXSAZGD-UHFFFAOYSA-N benzylperoxymethylbenzene Chemical compound C=1C=CC=CC=1COOCC1=CC=CC=C1 KQNZLOUWXSAZGD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004972 metal peroxides Chemical class 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
- 229940045872 sodium percarbonate Drugs 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
Definitions
- PHOTOGRAPHIC BLEACH COMPOSITION This invention relates to photographic bleach compositions for use in photographic colour processing. 5
- peroxy compounds e.g. hydrogen peroxide or a
- Some peroxide bleach solutions must contain an organic 10 metal complex salt e.g. US Specification 4 301 236, while others must employ a bleach accelerator e.g. Japanese speci ications 611250647A and 611261739A.
- a bleach accelerator e.g. Japanese speci ications 611250647A and 611261739A.
- U.S. specification 4 277 556 there are described bleach solutions having a pH between 2.0 and 15 5.5 consisting of a hydrogen peroxide solution and a mono— or dicarboxylic acid, or an alkylidene diphosphonic acid, typically 50ml/l 30% of hydrogen peroxide solution and 30 ml/1 concentrated acetic acid. Such solutions however do not bleach the entire 20 amount of silver present.
- the hydrogen peroxide bleach solution is alkaline having a pH of 7 or more and contains a polyacetic acid such as diethylenetriaminepentaacetic acid or 25 'DTPA'.
- no such solution has 30 ever been used commercially.
- European Patent Application Publication No. 0 428 101 Al an alkaline bleach solution "5 * containing a water—soluble chloride for producing rapid desilvering to which an organic phosphonic acid * 35 may be added to eliminate blister formation.
- a photographic bleach solution comprising hydrogen peroxide, or a compound capable of releasing hydrogen peroxide, and in combination two or more sequestering agents for complexing with a transition metal which will inhibit the decomposition of the bleach.
- the preferred pH range is from 5.5 to 14.
- Sequestering agents which may be suitable include two or more of the following:— a polyalkylcarboxylic, phosphonic or sulphonic acid containing at least one amine group which has condensed with one or more alkyl hydrogens of the alkylcarbox lie, phosphonic or sulphonic acid, such as a compound of formula (I) as defined hereinbelow or a salt thereof; an alkylidene —1, 1—diphosphonic acid, such as a compound of formula (II) as defined hereinbelow; a polyhydroxyphenyl such as a compound of formula (III) as defined hereinbelow; or a polyphosphate such as a compound of formula (IV), as defined hereinbelow, or an alkali metal salt thereof.
- a compound of formula (I) is represented by the structure.
- X and X may be the same or different and each is a hydrogen atom, a straight or branched chain alkyl group having
- a, b, c and d are the same or different and each is a hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, a hydroxyl, carboxyl, sulphonyl or phosphonyl group or either X 1 and/or X2 may be repeat units of
- Y is as defined for a, b, c and d or is the group Z or the group B,
- X 3 and X4 are the same or different and are as defined for X 1 and X2 wherein the sum of m, n and r is an integer from 1 to 10 and wherein one or both of the hydrogen atoms in each of the CH 2 m> (CH ⁇ ) n or
- (CH ? ) groups may be replaced by a straight or branched chain alkyl group having
- X , X 2, X3 and X4 are or contains a carboxylic, sulphonyl or phosphonyl group, or a salt thereof.
- compounds of formula (I) that are particularly suitable are ethylenediaminetetraacetic acid 'EDTA', propylenediaminetetraacetic acid 'PDTA* , nitrilotetraacetic acid 'NTA 1 but most preferably diethylenetriaminepentaacetic acid 'DTPA', these compounds generally being used in the form of their corresponding tetra- or penta-sodium salts.
- X is a hydrogen atom, a halogen atom or a hydroxyl group and n is from 0-12 whilst found to be suitable over a range of pH from 5.5 to pH 14 is more effective in the alkaline range.
- X hydroxy-ethylidene-1,1—diphosphonic acid
- Compounds of formula (III) and (IV) are both more effective in stabilising bleach at a mildly acidic pH, these compounds having the formulae represented hereinunder:—
- R1, R2, R3and R4 are the same or different and each is a hydrogen atom, a straight or branched chain alkyl group having 1 to 6 carbon atoms, a hydroxyl, sulphonyl or carboxyl group, especially dihydroxyphenyl sulphonate ('catechol 1 disulphonate 'CDS 1 ) or 'TIRON' and
- n is from 4 to 12, preferably 4 to 8 or an alkali metal salt thereof, such as 'QUADRAFOS'TM or 'CALGON'TM.
- a synergistic effect may be said to occur when at some time during the storage of the bleach solution the combined stabilising effect of two or more of the components is greater than the sum of the individual stabilising effects of the two or more components.
- such an effect may result by the combination of a polyalkylcarboxylic acid of formula (I) or a salt thereof with a diphosphonic acid of formula (II) or a polyphosphate of formula (IV) or an alkali metal salt thereof.
- the combination comprises diethylenetriamine- pentaacetic acid, 'DTPA' or a salt thereof and
- Each sequestering agent as a component in the synergistic combination is added in an amount of from .005 to 5% by weight of bleach solution, preferably from 0.04 to 0.1% by weight.
- Compounds capable of releasing hydrogen peroxide include metal peroxides; compounds which include hydrogen peroxide in their crystal structure such as sodium percarbonate; other peroxy compounds such as sodium perborate and persulphate; or soluble organic peroxides, such as butyl peroxide or benzyl peroxide.
- the hydrogen peroxide or a compound such as mentioned above is added in a sufficient quantity to enable the bleach step to take place in a suitable length of time.
- 30% hydrogen peroxide is used in an amount of from 20 to 100 ml/litre bleach solution, preferably about 50ml/litre, but equivalent amounts of, for example, 8% or 3% hydrogen peroxide may also be used.
- the bleach solution preferably has one or more acids, alkalis or buffers to maintain the pH at the required level, such as an alkali metal carbonate, carbonate/hydrogen carbonate buffer, phosphate buffer, amine/borate buffer, boric acid, or a carboxylic acid, such as acetic acid, propionic acid or glycollic acid.
- the bleach solutions of the present invention may be used with any type of photographic silver halide colour material. Such materials and their possible constituents are described, for example, in Research Disclosure Item 308119, December 1989, published by Kenneth Mason Publications, E sworth, Hants., United Kingdom. However materials based on predominantly silver chloride emulsions are preferred.
- the present invention also provides a method of photographic colour processing including a bleach step, which comprises the addition of hydrogen peroxide, or a compound capable of releasing hydrogen peroxide, and in combination two or more sequestering agents for complexing with a transition metal which will inhibit catalytic decomposition of the bleach.
- the bleach step may directly follow the developing or redox amplification stages or an intermediate stop bath may be employed.
- the photographic material to be processed preferably contains low levels of silver and is preferably based on emulsions which comprise at least 80%, preferably at least 90%, silver chloride and especially substantially pure silver chloride.
- a peroxide bleach suitable for use with a low silver paper material, was made up with the following formula: hydrogen peroxide 30% 50ml sodium hydrogen carbonate 25g potassium chloride 0.5g tap water to 1 litre
- the amount of residual hydrogen peroxide was determined using the method outlined on page 363 of the 3rd edition of 'A Text-book of Quantitative Inorganic Analysis' by Vogel. The titration was made with 5g/l sodium thiosulphate. The residual peroxide was determined as the amount of this solution need to reach the end point.
- Example 2 In order to try the bleaching ability of the stored bleach it was tested as described in Example 2 of related UK application No. 9022749.7. The time for bleaching increased by no more than 100% after one month, whereas a solution with no addenda was bleach-inactive in considerably less than one week.
- Example 2 In order to try the bleaching ability of the stored bleach it was tested as described in Example 2 of related UK application No. 9022749.7. The time for bleaching increased by no more than 100% after one month, whereas a solution with no addenda was bleach-inactive in considerably less than one week.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Detergent Compositions (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP92924624A EP0569576B1 (de) | 1991-12-03 | 1992-11-30 | Photographisches bleichmittel |
| JP50981993A JP3266259B2 (ja) | 1991-12-03 | 1992-11-30 | 写真漂白組成物 |
| DE69221471T DE69221471T2 (de) | 1991-12-03 | 1992-11-30 | Photographisches bleichmittel |
| US08/665,991 US5683858A (en) | 1992-11-30 | 1996-06-19 | Photographic bleach composition |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB919125687A GB9125687D0 (en) | 1991-12-03 | 1991-12-03 | Photographic bleach composition |
| GB9125687.5 | 1991-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1993011459A1 true WO1993011459A1 (en) | 1993-06-10 |
Family
ID=10705611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1992/002762 WO1993011459A1 (en) | 1991-12-03 | 1992-11-30 | Photographic bleach composition |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0569576B1 (de) |
| JP (1) | JP3266259B2 (de) |
| DE (1) | DE69221471T2 (de) |
| GB (1) | GB9125687D0 (de) |
| WO (1) | WO1993011459A1 (de) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679945A2 (de) * | 1994-04-20 | 1995-11-02 | Eastman Kodak Company | Wasserstoffperoxid-Bleichzusammensetzungen für die Verwendung mit photographischen Silberhalogenidelementen |
| EP0679941A2 (de) * | 1994-04-20 | 1995-11-02 | Eastman Kodak Company | Sulfo-substituierte Carboxylate als Puffer für photographische Bleich- und Bleichfixiermittel |
| US5541041A (en) * | 1995-04-17 | 1996-07-30 | Eastman Kodak Company | Stabilized peroxide bleaching solutions containing multiple chelating ligands and their use for processing of photographic elements |
| US5550009A (en) * | 1995-04-17 | 1996-08-27 | Eastman Kodak Company | Stabilized peroxide bleaching solutions and their use for processing of photographic elements |
| EP0733946A1 (de) * | 1995-03-21 | 1996-09-25 | Eastman Kodak Company | Verwendung eines alkalischen Vorbads zur Aktivierung einer sauren Peroxidbleichlösung für die Verarbeitung farbphotographischer Elemente |
| US5614355A (en) * | 1995-02-21 | 1997-03-25 | Eastman Kodak Company | Peroxide composition and method for processing color photographic elements containing predominantly chloride silver halide emulsions |
| US5763147A (en) * | 1995-02-21 | 1998-06-09 | Eastman Kodak Company | Method for processing high silver bromide color negative photographic films using a peroxide bleaching composition |
| US5773202A (en) * | 1995-02-21 | 1998-06-30 | Haye; Shirleyanne Elizabeth | Method for processing color photographic films using a peroxide bleaching composition |
| US5783376A (en) * | 1994-04-20 | 1998-07-21 | Eastman Kodak Company | Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes |
| US8802613B2 (en) | 2007-12-13 | 2014-08-12 | Akzo Nobel N.V. | Stabilized hydrogen peroxide solutions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4277556A (en) * | 1976-08-18 | 1981-07-07 | Konishiroku Photo Industry Co., Ltd. | Process for treating light-sensitive silver halide color photographic materials |
| US4933266A (en) * | 1988-03-01 | 1990-06-12 | Eastman Kodak Company | Photographic bleaching and bleach-fixing solutions |
| US4939073A (en) * | 1981-07-21 | 1990-07-03 | Konishiroku Photo Industry Co., Ltd. | Stablized method of light sensitive silver halide color photographic material |
-
1991
- 1991-12-03 GB GB919125687A patent/GB9125687D0/en active Pending
-
1992
- 1992-11-30 EP EP92924624A patent/EP0569576B1/de not_active Expired - Lifetime
- 1992-11-30 JP JP50981993A patent/JP3266259B2/ja not_active Expired - Fee Related
- 1992-11-30 DE DE69221471T patent/DE69221471T2/de not_active Expired - Fee Related
- 1992-11-30 WO PCT/EP1992/002762 patent/WO1993011459A1/en active IP Right Grant
Patent Citations (3)
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| US4277556A (en) * | 1976-08-18 | 1981-07-07 | Konishiroku Photo Industry Co., Ltd. | Process for treating light-sensitive silver halide color photographic materials |
| US4939073A (en) * | 1981-07-21 | 1990-07-03 | Konishiroku Photo Industry Co., Ltd. | Stablized method of light sensitive silver halide color photographic material |
| US4933266A (en) * | 1988-03-01 | 1990-06-12 | Eastman Kodak Company | Photographic bleaching and bleach-fixing solutions |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679941A3 (de) * | 1994-04-20 | 1997-04-09 | Eastman Kodak Co | Sulfo-substituierte Carboxylate als Puffer für photographische Bleich- und Bleichfixiermittel. |
| EP0679941A2 (de) * | 1994-04-20 | 1995-11-02 | Eastman Kodak Company | Sulfo-substituierte Carboxylate als Puffer für photographische Bleich- und Bleichfixiermittel |
| EP0679945A3 (de) * | 1994-04-20 | 1995-12-06 | Eastman Kodak Co | |
| US5783376A (en) * | 1994-04-20 | 1998-07-21 | Eastman Kodak Company | Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes |
| EP0679945A2 (de) * | 1994-04-20 | 1995-11-02 | Eastman Kodak Company | Wasserstoffperoxid-Bleichzusammensetzungen für die Verwendung mit photographischen Silberhalogenidelementen |
| US5641615A (en) * | 1994-04-20 | 1997-06-24 | Eastman Kodak Company | Processing silver halide photographic elements with a non-rehalogenating peroxide bleaching composition |
| US5763147A (en) * | 1995-02-21 | 1998-06-09 | Eastman Kodak Company | Method for processing high silver bromide color negative photographic films using a peroxide bleaching composition |
| US5614355A (en) * | 1995-02-21 | 1997-03-25 | Eastman Kodak Company | Peroxide composition and method for processing color photographic elements containing predominantly chloride silver halide emulsions |
| US5773202A (en) * | 1995-02-21 | 1998-06-30 | Haye; Shirleyanne Elizabeth | Method for processing color photographic films using a peroxide bleaching composition |
| EP0733946A1 (de) * | 1995-03-21 | 1996-09-25 | Eastman Kodak Company | Verwendung eines alkalischen Vorbads zur Aktivierung einer sauren Peroxidbleichlösung für die Verarbeitung farbphotographischer Elemente |
| US5550009A (en) * | 1995-04-17 | 1996-08-27 | Eastman Kodak Company | Stabilized peroxide bleaching solutions and their use for processing of photographic elements |
| US5541041A (en) * | 1995-04-17 | 1996-07-30 | Eastman Kodak Company | Stabilized peroxide bleaching solutions containing multiple chelating ligands and their use for processing of photographic elements |
| US8802613B2 (en) | 2007-12-13 | 2014-08-12 | Akzo Nobel N.V. | Stabilized hydrogen peroxide solutions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06505573A (ja) | 1994-06-23 |
| DE69221471D1 (de) | 1997-09-11 |
| GB9125687D0 (en) | 1992-01-29 |
| DE69221471T2 (de) | 1998-03-19 |
| EP0569576A1 (de) | 1993-11-18 |
| EP0569576B1 (de) | 1997-08-06 |
| JP3266259B2 (ja) | 2002-03-18 |
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