Patent US4128495A successfully refreshed from Google Patents.
US4128495A
Expired / Lapsed
US
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Bleaching composition
Assignee: Solvay Interox Ltd
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Filing: 1976-05-06
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Granted: 1978-12-05
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Expires: 1996-05-06
Abstract
Abstract The present invention provides bleaching or detergent compositions containing phthaloyl peroxide, preferably desensitized by intimate contact with a diluent e.g. magnesium sulphate, lauric acid or sodium trypolyphosphate, and coated to reduce destructive interaction with other components of the detergent or bleaching composition. Optionally the compositions can contain a persalt, e.g. sodium perborate, preferably in a ratio of one mole per mole of phthaloyl peroxide. The compositions are particularly suitable for washing/bleaching fabric at a temperature of from 30° to 60° C.
Inventors
- 👤 Joseph E. McCrudden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:00
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/39; C11D3/3945
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
22 words
A solid bleaching or detergent composition comprising a surfactant, a builder salt and a bleaching agent, said bleaching agent comprising phthaloyl peroxide.
Claim 2
Dependent Claim
22 words
A solid bleaching or detergent composition comprising a surfactant, a builder salt and a bleaching agent, said bleaching agent comprising phthaloyl peroxide.
Claim 3
Dependent Claim
28 words
A solid bleaching or detergent composition according to claim 1 wherein said phthaloyl peroxide bleaching agent is in intimate contact with a desensitizing amount of a desensitizing diluent.
Claim 4
Dependent Claim
20 words
A solid bleaching or detergent composition according to claim 2 wherein said phthaloyl peroxide is granulated with said desensitizing diluent.
Claim 5
Dependent Claim
53 words
A solid bleaching or detergent composition according to claim 3 wherein said surfactant comprises an alkaline surfactant and wherein the granulated product bears a coating of from 3 to 35% by weight of a coating agent to render the phthaloyl peroxide less prone to decomposition when stored in contact with said alkaline surfactant.
Claim 6
Dependent Claim
27 words
A solid bleaching or detergent composition according to claim 1 further comprising a persalt in a mole ratio to said phthaloyl peroxide of from 1:5 to 5:1.
Claim 7
Dependent Claim
19 words
A solid bleaching or detergent composition according to claim 5 wherein said mole ratio is from 2:1 to 1:2.
Claim 8
Dependent Claim
17 words
A solid bleaching or detergent composition according to claim 5 wherein said mole ratio is approximately 1:1.
Claim 9
Dependent Claim
29 words
A solid bleaching or detergent composition according to claim 1 wherein said phthaloyl peroxide is substituted by a member of the group consisting of lower alkyl, chloro, or nitro.
Claim 10
Dependent Claim
40 words
A solid bleaching or detergent composition according to claim 1 further comprising at least one detergent adjunct selected from the group consisting of colors, perfumes, bleach stabilizers, optical brightening agents, soil antiredeposition agents, enzymes, dedusting agents, tarnish inhibitors, and abrasives.
Claim 11
Dependent Claim
37 words
A solid bleaching or detergent composition according to claim 1 further comprising at least one member selected from the group consisting of sodium sulfate and magnesium sulfate in an amount of from 1 to 40% by weight.
Claim 12
Dependent Claim
75 words
A solid bleaching or detergent composition according to claim 2 wherein said surfactant is alkaline and wherein said phthaloyl peroxide is present in said composition in intimate contact with said desensitizing diluent in the form of a plurality of discrete bodies, said discrete bodies bearing a coating of from 3 to 35% by weight of a coating agent to render the phthaloyl peroxide less prone to decomposition when stored in contact with said alkaline surfactant.
Claim 13
Dependent Claim
30 words
A process for bleaching which comprises contacting a material to be bleached with an aqueous bleaching composition containing phthaloyl peroxide and a persalt whereby diperoxyphthalic acid is generated in solution.
Claim 14
Dependent Claim
30 words
A process for bleaching which comprises contacting a material to be bleached with an aqueous bleaching composition containing phthaloyl peroxide and a persalt whereby diperoxyphthalic acid is generated in solution.
Claim 15
Dependent Claim
25 words
A process according to claim 12 wherein said phthaloyl peroxide is substituted with a member of the group consisting of lower alkyl, chloro and nitro.
Claim 16
Dependent Claim
24 words
A process according to claim 12 wherein said material comprises textile fabric and wherein the aqueous solution contains 5 to 200 ppm available oxygen.
Claim 17
Dependent Claim
22 words
A process according to claim 12 wherein the aqueous solution is maintained at a temperature of from 25° C to 60° C.
Claim 18
Dependent Claim
20 words
A process according to claim 12 wherein the aqueous solution is maintained at a pH of from 8.5 to 11.5.
Claim 19
Dependent Claim
23 words
A process according to claim 12 for treating a hard surface wherein the aqueous solution contains from 200 to 500 ppm available oxygen.
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) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |