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US4115058A
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Aromatic sulfonic anhydrides as peroxygen activators
Assignee: FMC Corp
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Filing: 1977-10-03
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Granted: 1978-09-19
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Expires: 1997-10-03
Abstract
Abstract A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an aromatic sulfonic anhydride of the formula RSO 2 --O--SO 2 R, wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine. Aromatic is used herein in its modern sense to signify an organic ring system having aromatic character including both aromatic hydrocarbon and heterocyclic ring systems. Also described are dry blend compositions containing the bleach bath components.
Inventors
- 👤 John H. Blumbergs
- 👤 Joseph H. Finley
- 👤 Burton M. Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
160 words
A process for the low temperature bleaching of stained and/or soiled fabrics which comprises treating them with an aqueous peroxygen bleaching solution having a pH of about 6 to about 12 and containing as a peroxygen activator therefor, an effective amount of an aromatic sulfonic anhydride having the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine.
Claim 2
Dependent Claim
160 words
A process for the low temperature bleaching of stained and/or soiled fabrics which comprises treating them with an aqueous peroxygen bleaching solution having a pH of about 6 to about 12 and containing as a peroxygen activator therefor, an effective amount of an aromatic sulfonic anhydride having the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine.
Claim 3
Dependent Claim
21 words
The process according to claim 1 wherein the mole ratio of peroxygen to activator is from about 20:1 to about 1:3.
Claim 4
Dependent Claim
13 words
The process according to claim 2 wherein the peroxygen is sodium perborate tetrahydrate.
Claim 5
Dependent Claim
26 words
The process according to claim 2 wherein the quantity of peroxygen is sufficient to provide from about 2 ppm to about 2000 ppm of active oxygen.
Claim 6
Dependent Claim
14 words
The process according to claim 1 wherein the bleach solution contains a detergent agent.
Claim 7
Dependent Claim
21 words
The process according to claim 1 wherein the pH of the bleach solution is maintained by means of a buffering agent.
Claim 8
Dependent Claim
33 words
The process according to claim 1 wherein the activator is selected from the class consisting of p-toluenesulfonic anhydride, benzenesulfonic anhydride, 2,4,6-trimethylbenzenesulfonic anhydride, dichlorobenzenesulfonic anhydride, dimethylbenzenesulfonic anhydride, p-chlorobenzenesulfonic anhydride, p-iodobenzenesulfonic anhydride, and p-methoxybenzenesulfonic anhydride.
Claim 9
Dependent Claim
133 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, an aromatic sulfonic anhydride of the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine, and bromine.
Claim 10
Dependent Claim
133 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, an aromatic sulfonic anhydride of the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine, and bromine.
Claim 11
Dependent Claim
14 words
The composition according to claim 8 wherein the peroxygen compound is sodium perborate tetrahydrate.
Claim 12
Dependent Claim
16 words
A detergent composition consisting essentially of a detergent agent and the composition defined in claim 8.
Claim 13
Dependent Claim
150 words
A bleaching composition consisting essentially of a peroxygen bleaching compound, an aromatic sulfonic anhydride activator of the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine, and sufficient buffering agent to maintain a pH of about 6 to 12 when the bleaching composition is dissolved in water.
Claim 14
Dependent Claim
150 words
A bleaching composition consisting essentially of a peroxygen bleaching compound, an aromatic sulfonic anhydride activator of the formula: RSO.sub.2 --O--SO.sub.2 R wherein each R is an aromatic ring system selected from the class consisting of a phenyl group, taken together an o-phenylene group, a naphthyl group, taken together an o-naphthylene group and a heterocyclic group having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the class consisting of nitrogen, oxygen and sulfur, said groups optionally bearing 1 to 3 substituents selected from the class consisting of nitro, alkyl of 1 to 16 carbon atoms, alkoxy of 1 to 16 carbon atoms, aliphatic carboxamido of 1 to 16 carbon atoms, benzamido, chlorine and bromine, and sufficient buffering agent to maintain a pH of about 6 to 12 when the bleaching composition is dissolved in water.
Claim 15
Dependent Claim
21 words
The bleaching composition of claim 11 wherein the mole ratio of peroxygen to activator is from about 20:1 to about 1:3.
Claim 16
Dependent Claim
33 words
The bleaching composition of claim 8 wherein the activator is selected from the class consisting of p-toluenesulfonic anhydride, benzenesulfonic anhydride, 2,4,6-trimethylbenzenesulfonic anhydride, dichlorobenzenesulfonic anhydride, dimethylbenzenesulfonic anhydride, p-chlorobenzenesulfonic anhydride, p-iodobenzenesulfonic anhydride, and p-methoxybenzenesulfonic anhydride.
Claim 17
Dependent Claim
49 words
A detergent composition consisting essentially of (a) from about 5% to about 50% by weight of the bleaching composition of claim 11; (b) from about 5% to about 50% by weight of a detergent agent; and (c) from about 1% to about 60% by weight of a detergency builder.
Claim 18
Dependent Claim
40 words
The detergent composition of claim 14 wherein the peroxygen is sodium perborate tetrahydrate and the activator is selected from the class consisting of p-toluenesulfonic anhydride, benzenesulfonic anhydride, 2,4,6-trimethylbenzenesulfonic anhydride, dichlorobenzenesulfonic anhydride, dimethylbenzenesulfonic anhydride, p-chlorobenzenesulfonic anhydride, p-iodobenzenesulfonic anhydride, and p-methoxybenzenesulfonic anhydride.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |