US4017412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching composition
Assignee: Procter and Gamble Co
•
Filing: 1975-03-27
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Granted: 1977-04-12
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Expires: 1995-03-27
Abstract
Abstract Starch-thickened compositions containing particulate peroxygen compounds, especially diperazelaic acid, provide stable, effective compositions especially adapted for use as color-safe fabric bleaches at alkaline pH's, e.g., in laundry baths.
Inventors
- 👤 William Jack Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/10; D06L4/15; D06L4/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
A fabric bleaching composition having a viscosity of from about 200 cps to about 100,000 cps, comprising: a. from about 5% to about 35% by weight of a solid, substantially water-insoluble peroxygen compound selected from the group consisting of diperazelaic acid, diperbrassylic acid, dipersebacic acid, and diperisophthalic acid; b. an effective amount of a starch thickening agent; and c. the balance a liquid carrier.
Claim 2
Dependent Claim
64 words
A fabric bleaching composition having a viscosity of from about 200 cps to about 100,000 cps, comprising: a. from about 5% to about 35% by weight of a solid, substantially water-insoluble peroxygen compound selected from the group consisting of diperazelaic acid, diperbrassylic acid, dipersebacic acid, and diperisophthalic acid; b. an effective amount of a starch thickening agent; and c. the balance a liquid carrier.
Claim 3
Dependent Claim
23 words
A composition according to claim 1 wherein the starch thickening agent represents from about 1% to about 25% by weight of the composition.
Claim 4
Dependent Claim
21 words
A composition according to claim 2 wherein the composition has a viscosity of from about 1000 cps to about 20,000 cps.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 wherein the diperoxyacid is characterized by an average particle diameter below about 1500 microns.
Claim 6
Dependent Claim
23 words
A composition according to claim 1 wherein the thickening agent is selected from corn, wheat, rice, potato and tapioca starches, and derivatives thereof.
Claim 7
Dependent Claim
23 words
A composition according to claim 5 wherein the thickener is corn starch and comprises from about 5% to about 20% of the composition.
Claim 8
Dependent Claim
12 words
A composition according to claim 1 wherein the liquid carrier is water.
Claim 9
Dependent Claim
12 words
A composition according to claim 1 wherein the diperoxyacid is diperazelaic acid.
Claim 10
Dependent Claim
18 words
A composition according to claim 8 containing, as an additional component, an odoriferous amount of a perfume component.
Claim 11
Dependent Claim
29 words
A composition according to claim 9 containing, as an additional component, an effective amount of a metal chelating agent, whereby the composition is substantially free of heavy metal cations.
Claim 12
Dependent Claim
13 words
A composition according to claim 10 which is in the non-alkaline pH range.
References Cited (Backward Citations)
CA635620A
Cited
US3708260A
Cited
US3684722A
Cited
US3726967A
Cited
US3789002A
Cited
US3843548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |