Patent DE409155C successfully refreshed from Google Patents.
Patent US4332691A successfully refreshed from Google Patents.
US4332691A
Expired / Lapsed
US
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Bleaching liquid cleaning composition
Assignee: Lever Brothers Co
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Filing: 1981-04-06
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Granted: 1982-06-01
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Expires: 2001-04-06
Abstract
Abstract A photobleaching liquid cleaning composition contains 1% to 79.9% by weight of detersive surfactant, with or without a detergency builder; 0.1 to 40% by weight of a chlorite, and at least about 20% by weight of a liquid base, the composition yielding a pH of at least 6 when dissolved in water at a concentration of about 0.5 g/l. The composition is suitable for the laundering of fabrics as well as for the use in the manual cleaning of dishes or in general purpose cleaning of hard surfaces.
Inventors
- 👤 Stuart W. Beavan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0063; C11D3/395; C11D3/3953; C11D3/3956; D; D06; D06L; D06L4/00; D06L4/20; D06L4/22; D06L4/24
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A liquid-based bleaching and cleaning composition consisting essentially of: (i) at least about 20% by weight of a liquid base, (ii) about 1% to about 79.9% by weight of a detersive surfactant with or without a detergency builder; and (iii) about 0.1% to about 40% by weight of a chlorite whereby said composition yields a pH of at least 6.0 when dispersed in water at a concentration of about 0.5 g/l and provides a bleaching effect when exposed to a source of ultraviolet light.
Claim 2
Dependent Claim
84 words
A liquid-based bleaching and cleaning composition consisting essentially of: (i) at least about 20% by weight of a liquid base, (ii) about 1% to about 79.9% by weight of a detersive surfactant with or without a detergency builder; and (iii) about 0.1% to about 40% by weight of a chlorite whereby said composition yields a pH of at least 6.0 when dispersed in water at a concentration of about 0.5 g/l and provides a bleaching effect when exposed to a source of ultraviolet light.
Claim 3
Dependent Claim
24 words
A composition according to claim 1, wherein the surfactant is selected from soaps, anionic, cationic, zwitterionic, semi-polar, amphoteric and nonionic surfactants and mixtures thereof.
Claim 4
Dependent Claim
23 words
A composition according to claim 1, wherein the chlorite is selected from chlorites of alkalimetals, alkaline earth metals and substituted or unsubstituted ammonium.
Claim 5
Dependent Claim
12 words
A composition according to claim 3, wherein the chlorite is sodium chlorite.
Claim 6
Dependent Claim
25 words
A composition according to claim 1, wherein the chlorite is present in an amount of about 0.5 to about 40% by weight of the composition.
Claim 7
Dependent Claim
48 words
A composition in accordance with claim 1, wherein the composition contains, for each party by weight of the chlorite, less than about 0.4 parts by weight of a material which in aqueous media in the absence of ultraviolet light reacts to a substantial extent with the chlorite ions.
Claim 8
Dependent Claim
30 words
A composition according to claim 1, wherein the composition further contains any one or more of builders, in an amount of up to about 40% by weight of the composition.
Claim 9
Dependent Claim
23 words
A composition according to claim 1, wherein the ratio of surfactant, with or without builder, to the chlorite is in excess of 1:1.
Claim 10
Dependent Claim
25 words
A composition according to claim 1, wherein the pH of said composition is from 8.5-11 when dispersed in water at concentration of about 0.5 g/l.
Claim 11
Dependent Claim
26 words
A composition according to claim 1, wherein the pH is from 6-8.5 when said composition is dispersed in water at a concentration of about 0.5 g/l.
Claim 12
Dependent Claim
24 words
A composition according to claim 1, wherein said ultraviolet light has a component with a wavelength of about 200 nm to about 400 nm.
Claim 13
Dependent Claim
18 words
A composition according to claim 1, wherein the wavelength of said ultraviolet light is less than 370 nm.
Claim 14
Dependent Claim
24 words
A composition according to claim 1, wherein the intensity of said ultraviolet light is about 0.1 to about 10.0 Wm -2 nm -1 .
Claim 15
Dependent Claim
30 words
A composition according to claim 1, wherein the intensity of said ultraviolet light is from about 10 -1 to about 10 -6 Einsteins of energy per liter of said composition.
Claim 16
Independent Claim
91 words
A method of bleaching and cleaning fabrics comprising the steps of: (i) preparing a treatment liquid comprising (a) at least about 20% by weight of a liquid base; (b) about 1% to about 79.9% by weight of a detersive surfactant with or without a detergency builder; and (c) about 0.1% to about 40% by weight of a chlorite; (ii) contacting said fabric with said treatment liquid; and then (iii) exposing said fabric contacted with said treatment liquid to a source of ultraviolet light whereby a bleaching and cleaning effect is obtained.
Claim 17
Independent Claim
91 words
A method of bleaching and cleaning fabrics comprising the steps of: (i) preparing a treatment liquid comprising (a) at least about 20% by weight of a liquid base; (b) about 1% to about 79.9% by weight of a detersive surfactant with or without a detergency builder; and (c) about 0.1% to about 40% by weight of a chlorite; (ii) contacting said fabric with said treatment liquid; and then (iii) exposing said fabric contacted with said treatment liquid to a source of ultraviolet light whereby a bleaching and cleaning effect is obtained.
Claim 18
Dependent Claim
33 words
A method of bleaching and cleaning fabrics according to claim 1, wherein the pH of said treatment liquid is at least 6.0 when dispersed in water at a concentration of about 0.5 g/l.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |