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Title: Stabilized bleach-fixing baths
Claims: We claim: 1. A bleach-fix composition for use in photographic 1 comprising (10 a bleaching agent which is an iron or cobalt complex of a polycarboxylic acid, (2) a thiosulfate fixing agent, and (3) an amount sufficient to retard sulfurization of said bleach-fix composition of a carbonyl bisulfite adduct comprising at least two carbon atoms. 2. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR8## wherein R.sup.1 is a hydrogen atom or an alkyl group of 1 to 8 carbon atoms, R.sup.2 is an alkyl group of 1 to 8 carbon atoms, and M is an alkali metal. 3. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR9## wherein R.sup.3 is an alkyl group of 1 to 4 carbon atoms and M is an alkali metal. 4. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR10## wherein R.sup.4 and R.sup.5 are alkyl groups of 1 to 4 carbon atoms and M is an alkali metal. 5. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR11## wherein R.sup.6 and R.sup.7 are hydrogen atoms or alkyl groups of 1 to 8 carbon atoms, n is an integer having a value of from 0 to 6, and M is an alkali metal. 6. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR12## wherein n is an integer having a value of from 1 to 4 and M is an alkali metal. 7. A bleach-fix composition as claimed in claim 1 wherein the carbonyl bisulfite adduct is of the formula: ##STR13## wherein R.sup.8 and R.sup.9 are alkyl groups of 1 to 2 carbon atoms, n is an integer having a value of from 1 to 4 and M is an alkali metal. 8. A bleach-fix composition as claimed in claim 1 wherein the bleaching agent is a ferric complex of an aminopolycarboxylic acid. 9. A bleach-fix composition as claimed in claim 1 wherein the bleaching agent is a ferric complex of an aminopolyacetic acid. 10. A bleach-fix composition as claimed in claim 1 wherein the bleaching agent is a ferric complex of ethylenediaminetetraacetic acid. 11. A bleach-fix composition as claimed in claim 1 wherein the bleaching agent is the ammonium salt of ferric ethylenediamine tetraacetic acid. 12. A bleach-fix composition as claimed in claim 1 wherein the fixing agent is ammonium thiosulfate. 13. A bleach-fix composition as claimed in claim 1 wherein said composition has a pH in the range from about 6 to about 7. 14. A bleach-fix composition as claimed in claim 1 wherein said composition contains a mercaptothiadiazole bleach accelerator. 15. A bleach-fix composition as claimed in claim 1 wherein said composition contains 5-amino-1,3,4-thiadiazole-2-thiol as a bleach accelerator. 16. A bleach-fix composition as claimed in claim 1 wherein said composition contains said bleaching agent in an amount of about 5 to about 400 grams per liter, said fixing agent in an amount of about 5 to about 400 grams per liter, and said carbonyl bisulfite adduct in an amount of about 0.01 to about 1 mole per liter. 17. A bleach-fix composition as claimed in claim 1 wherein said composition contains said bleaching agent in an amount of about 10 to about 200 grams per liter, said fixing agent in an amount of about 10 to about 200 grams per liter, and said carbonyl bisulfite adduct in an amount of about 0.02 to about 0.5 moles per liter. 18. A bleach-fix composition as claimed in claim 1 wherein said composition contains said bleaching agent in an amount of about 10 to about 200 grams per liter, said fixing agent in an amount of about 10 to about 200 grams per liter, and said carbonyl bisulfite adduct in an amount of about 0.05 to about 0.25 moles per liter. 19. A bleach-fix composition as claimed in claim 1 wherein said carbonyl bisulfite adduct is sodium acetaldehyde bisulfite. 20. A bleach-fix composition as claimed in claim 1 wherein said carbonyl bisulfite adduct is succinaldehyde bis-sodium bisulfite. 21. A bleach-fix composition as claimed in claim 1 wherein said carbonyl bisulfite adduct is glutaraldehyde bis-sodium bisulfite. 22. A bleach-fix composition for use in photographic processing comprising ammonium thiosulfate, the ammonium salt of ferric ethylenediaminetetraacetic acid, and sodium acetaldehyde bisulfite in an amount sufficient to retard sulfurization of said composition. 23. A bleach-fix composition for use in photographic processing comprising ammonium thiosulfate, the ammonium salt of ferric ethylenediaminetetraacetic acid, and glutaraldehyde bis-sodium bisulfite in an amount sufficient to retard sulfurization of said composition. 24. A method of increasing the resistance to sulfurization of a photographic bleach-fix composition containing a bleaching agent which is an iron or cobalt complex of a polycarboxylic acid and a thiosulfate fixing agent, which method comprises incorporating therein an effective amount of a carbonyl bisulfite adduct comprising at least two carbon atoms. 25. A method as claimed in claim 24 wherein said bleaching agent is the ammonium salt of ferric ethylenediamine tetraacetic acid. 26. A method as claimed in claim 24 wherein said fixing agent is ammonium thiosulfate. 27. A method as claimed in claim 24 wherein said carbonyl bisulfite adduct is glutaraldehyde bis-sodium bisulfite. Other info: Inventors: Borton, Gary L. (Penfield, NY, US) Goff, Cobb S. (Rochester, NY, US) Malloy, Richard J. (Webster, NY, US) Application Number: 389063 Filing Date: 1973-08-16 Publication_date: 1977-07-05 Assignee: Eastman Kodak Company (Rochester, NY) Primary Class(es): 430/460 430/393, 430/936 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Kelley, Mary F. Assistant Examiner: Attorney: Lorenzo; A. P. |
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