US4293639A
Expired / Lapsed
US
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Bleaching compositions for photographic processing
Assignee: Fujifilm Holdings Corp
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Filing: 1980-05-09
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Granted: 1981-10-06
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Expires: 2000-05-09
Abstract
Abstract The generation of toxic gases from a bleaching composition for silver halide color photographic materials containing a bleaching agent such as a persulfate or an inorganic ferric salt and a water-soluble halide can be prevented by the incorporation therein of a compound represented by the formula [I]: R.sup.1 --X--NH--R.sup.2 [I] wherein X is a carbonyl group or a sulfonyl group; R 1 is an alkyl group, an alkenyl group, a phenyl group, an alkoxy group, an amino group, an acylamino group, or a heterocyclic ring; and R 2 is a hydrogen atom, an alkyl group, an alkenyl group, a phenyl group, an acyl group, a carbamoyl group, or a heterocyclic ring; or R 1 and R 2 together form a 5- or 6-membered ring or a tautomer thereof.
Inventors
- 👤 Isamu Itoh
- 👤 Taiji Hashimura
- 👤 Takatoshi Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:16
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/42; G03C7/421
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
153 words
A bleaching composition for silver halide photographic materials comprising (1) a persulfate or an inorganic ferric salt, (2) a water-soluble halide, and (3) a compound represented by the formula [I-a] or [I-b] R.sup.1 --CO--NH--CO--R.sup.2 [I-a] R.sup.1 --SO.sub.2 --NH--CO--R.sup.2 [I-b] R 1 represents an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an alkoxy group having 1 to 4 carbon atoms, an amino group, an acylamino group having 1 to 4 carbon atoms, or a heterocyclic ring; and R 2 represents hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an acyl group having 1 to 4 carbon atoms, a carbamoyl group, or a heterocyclic ring; or or R 1 and R 2 together form a 5- or 6-membered heterocyclic ring, which may be condensed with another ring.
Claim 2
Dependent Claim
153 words
A bleaching composition for silver halide photographic materials comprising (1) a persulfate or an inorganic ferric salt, (2) a water-soluble halide, and (3) a compound represented by the formula [I-a] or [I-b] R.sup.1 --CO--NH--CO--R.sup.2 [I-a] R.sup.1 --SO.sub.2 --NH--CO--R.sup.2 [I-b] R 1 represents an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an alkoxy group having 1 to 4 carbon atoms, an amino group, an acylamino group having 1 to 4 carbon atoms, or a heterocyclic ring; and R 2 represents hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an acyl group having 1 to 4 carbon atoms, a carbamoyl group, or a heterocyclic ring; or or R 1 and R 2 together form a 5- or 6-membered heterocyclic ring, which may be condensed with another ring.
Claim 3
Dependent Claim
14 words
A bleaching composition as in claim 1 wherein the component (1) is a persulfate.
Claim 4
Dependent Claim
16 words
A bleaching composition as in claim 1 wherein the component (1) is an inorganic ferric salt.
Claim 5
Dependent Claim
15 words
A bleaching composition as claimed in claim 1 wherein the component (2) is a chloride.
Claim 6
Dependent Claim
14 words
A bleaching composition as in claim 1 wherein the compound (2) is a bromide.
Claim 7
Dependent Claim
18 words
A bleaching composition as in claim 4, wherein said chloride is potassium chloride, sodium chloride or ammonium chloride.
Claim 8
Dependent Claim
18 words
A bleaching composition as in claim 5, wherein said bromide is potassium bromide, sodium bromide or ammonium bromide.
Claim 9
Dependent Claim
18 words
A bleaching composition as in claim 1, wherein the compound represented by formula [I] is succinimide or phthalimide.
Claim 10
Dependent Claim
22 words
A bleaching composition as in claim 1, wherein the compound represented by formula [I] is pyrrolidone, saccharin, hydantoin, uracil, or cyanuric acid.
Claim 11
Dependent Claim
37 words
A bleaching composition as in claim 1, wherein the compound represented by formula [Ia] or [I-b] is used in an amount of from about 2×10 -6 mole to 1×10 -1 mole per mole of the bleaching solution.
Claim 12
Dependent Claim
18 words
A bleaching composition as in claim 2, wherein said persulfate is potassium persulfate, sodium persulfate, or ammonium persulfate.
Claim 13
Dependent Claim
28 words
A bleaching composition as in claim 3, wherein said inorganic ferric salt is selected from the group consisting of ferric chloride, ferric bromide, ferric sulfate, and ferric nitrate.
Claim 14
Dependent Claim
166 words
A photographic process wherein image-wise exposure, development, bleaching and fixing are carried out and the bleaching is carried out with a composition comprising (1) a persulfate or an inorganic ferric salt, (2) a water-soluble halide, and (3) a compound represented by the formula [I-a] or [I-b] R.sup.1 --CO--NH--R.sup.2 [I-a] R.sup.1 --SO.sub.2 --NH--R.sup.2 [I-b] R 1 represents an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an alkoxy group having 1 to 4 carbon atoms, an amino group, an acylamino group having 1 to 4 carbon atoms, or a heterocyclic ring; and R 2 represents hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an acyl group having 1 to 4 carbon atoms, a carbamoyl group, or a heterocyclic ring; or R 1 and R 2 together form a 5- or 6-membered heterocyclic ring, which may be condensed with another ring.
Claim 15
Dependent Claim
166 words
A photographic process wherein image-wise exposure, development, bleaching and fixing are carried out and the bleaching is carried out with a composition comprising (1) a persulfate or an inorganic ferric salt, (2) a water-soluble halide, and (3) a compound represented by the formula [I-a] or [I-b] R.sup.1 --CO--NH--R.sup.2 [I-a] R.sup.1 --SO.sub.2 --NH--R.sup.2 [I-b] R 1 represents an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an alkoxy group having 1 to 4 carbon atoms, an amino group, an acylamino group having 1 to 4 carbon atoms, or a heterocyclic ring; and R 2 represents hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, a phenyl group, an acyl group having 1 to 4 carbon atoms, a carbamoyl group, or a heterocyclic ring; or R 1 and R 2 together form a 5- or 6-membered heterocyclic ring, which may be condensed with another ring.
Claim 16
Dependent Claim
63 words
A process as in claim 13, wherein said processing additionally comprises using as a bleaching accelerator a mercapto compound represented by the formula [II] X--A--SH [II] wherein A represents an alkylene group or a nitrogen-containing unsaturated divalent heterocyclic ring, and X represents an alkyl-substituted or unsubstituted amino group, a nitrogen-containing saturated heterocyclic ring, a hydroxy group, a carboxy group or a sulfo group.
Claim 17
Dependent Claim
46 words
A process as in claim 14, wherein said bleaching accelerator is a compound represented by the formula [III]: X--(CH.sub.2).sub.n --SH [III] wherein X represents an N,N-dimethylamino group, an N,N-diethylamino group, a carboxy group or a sulfo group, and n represents an integer of 2 or 3.
Claim 18
Dependent Claim
23 words
A process of claim 14 or 15, wherein said bleaching accelerator is used in the bath prior to bleaching or the bleaching bath.
Claim 19
Dependent Claim
19 words
A process of claim 13 or 14, wherein said bleaching accelerator is selected from the group consisting of ##STR10##
Claim 20
Dependent Claim
20 words
A process of claims 13 or 14, wherein said bleaching accelerator is a compound represented with the following formula: ##STR11##
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |