US4225451A
Expired / Lapsed
US
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Bleaching composition
Assignee: Solvay Interox Ltd
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Filing: 1977-12-05
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Granted: 1980-09-30
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Expires: 1997-12-05
Abstract
Abstract The present invention provides aromatic peroxyacids containing at least two peroxyacid groups and a total of at least three peroxyacid or carboxy acid groups, which can be incorporated in detergent or bleaching compositions. The aromatic peroxyacids can be desensitized by intimate contact with a diluent e.g. magnesium sulphate or lauric acid, and coated to reduce destructive interaction with other components of the detergent or bleaching composition. Preferred aromatic peroxyacids include triperoxy trimellitic acid, triperoxy trimesic acid and tetraperoxy pyomellitic acid. The aromatic peroxyacids are especialy suitable for washing white fabrics or cleaning hard surfaces, particularly at a temperature of from 30° to 60° C.
Inventors
- 👤 Joseph E. McCrudden
- 👤 Alan Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:07
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C07; C07C; C07C409/00; C07C409/24; C07C409/30; C11D3/00; C11D3/39; C11D3/3945; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
46 words
A bleaching agent comprising a compound having the general formula: ##STR4## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group, said compound being coated with from 3% to 35% by weight of a coating agent.
Claim 2
Dependent Claim
46 words
A bleaching agent comprising a compound having the general formula: ##STR4## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group, said compound being coated with from 3% to 35% by weight of a coating agent.
Claim 3
Dependent Claim
45 words
A bleaching agent comprising a compound having the general formula: ##STR5## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group, said compound being in intimate contact with a desensitizing amount of a desensitizing diluent.
Claim 4
Dependent Claim
45 words
A bleaching agent comprising a compound having the general formula: ##STR5## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group, said compound being in intimate contact with a desensitizing amount of a desensitizing diluent.
Claim 5
Dependent Claim
33 words
A bleaching agent according to claim 2 wherein the desensitizing diluent is granulated with the bleaching agent, and the granules are coated with from 3% to 35% by weight of a coating agent.
Claim 6
Dependent Claim
32 words
A bleaching or detergent composition comprising a surfactant, a builder salt and a bleaching agent, said bleaching agent comprising a compound having the general formula: ##STR6## wherein p≧3 or an anion thereof.
Claim 7
Dependent Claim
32 words
A bleaching or detergent composition comprising a surfactant, a builder salt and a bleaching agent, said bleaching agent comprising a compound having the general formula: ##STR6## wherein p≧3 or an anion thereof.
Claim 8
Dependent Claim
14 words
An improved bleaching composition according to claim 4 wherein p is 3 or 4.
Claim 9
Dependent Claim
46 words
A bleaching or detergent composition comprising a surfactant, a builder salt, and a bleaching agent, said bleaching agent comprising a compound having the general formula: ##STR7## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group.
Claim 10
Dependent Claim
46 words
A bleaching or detergent composition comprising a surfactant, a builder salt, and a bleaching agent, said bleaching agent comprising a compound having the general formula: ##STR7## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group.
Claim 11
Dependent Claim
53 words
An composition according to claim 6 wherein the surfactant is present in an amount of from 1 to 90% by weight, the builder salt is present in an amount of from 1 to 90% by weight, and the bleaching agent is present in an amount of from 1 to 500 ppm available oxygen.
Claim 12
Dependent Claim
13 words
An composition according to claim 6 wherein said peroxycarboxylic acid comprises triperoxytrimesic acid.
Claim 13
Dependent Claim
13 words
An composition according to claim 6 wherein said peroxycarboxylic acid comprises triperoxytrimellitic acid.
Claim 14
Dependent Claim
43 words
A process of bleaching comprising contacting a material to be bleached with an aqueous solution comprising a peroxyacid having the general formula: ##STR8## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group.
Claim 15
Dependent Claim
43 words
A process of bleaching comprising contacting a material to be bleached with an aqueous solution comprising a peroxyacid having the general formula: ##STR8## wherein p≧3, or an anion thereof, the benzene nucleus being optionally substituted by a lower alkyl, chloro or nitro group.
Claim 16
Dependent Claim
26 words
A process according to claim 10 wherein said material comprises a textile fabric and wherein the aqueous solution contains from 1 to 200 ppm available oxygen.
Claim 17
Dependent Claim
26 words
A process according to claim 10 wherein said material comprises a hard surface and wherein the aqueous solution contains from 200 to 500 ppm available oxygen.
Claim 18
Dependent Claim
21 words
A process according to claim 11 wherein the aqueous solution is maintained at a temperature of from 20° to 60° C.
Claim 19
Dependent Claim
22 words
A process according to claim 11 wherein the aqueous solution is maintained at a pH of from pH 8.5 to pH 11.5.
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) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |