Patent US3671439A successfully refreshed from Google Patents.
US3671439A
Expired / Lapsed
US
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Oxygen bleach-activator systems stabilized with puffed borax
Assignee: BOYLE-MIDWAY HOUSEHOLD PRODUCTS Inc A CORP OF DE
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Filing: 1969-07-22
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Granted: 1972-06-20
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Expires: 1989-07-22
Abstract
Abstract Oxygen releasing bleaches such as perborates are combined with activators and puffed borax to provide compositions unusually stable upon storage under adverse conditions of high temperature and humidity to which they are normally subjected.
Inventors
- 👤 Garland G Corey
- 👤 Bernard Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:44
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C01; C01B; C01B15/00; C01B15/055; C01B15/12; C11D3/3905; C11D3/3907; C11D3/3932
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
12 words
The composition of claim 1 wherein said peroxy compound is sodium perborate.
Claim 2
Dependent Claim
15 words
The composition of claim 1 wherein said activator for the oxygen-active bleach substance is benzoylimidazole.
Claim 3
Dependent Claim
24 words
The composition of claim 1 wherein said activator for the oxygen-active bleach substance is composed of a chelating agent and a transition metal salt.
Claim 4
Dependent Claim
20 words
The composition of claim 4 wherein saId chelating agent is picolinic acid and said transition metal salt is cobalt sulfate.
Claim 5
Dependent Claim
39 words
The composition of claim 1 wherein said puffed borax has a bulk density of about 15 lbs./cu. ft. and wherein the major portion of the particle size in the U.S. sieve range is from about +40 to about +60.
Claim 6
Dependent Claim
34 words
The composition according to claim 1 wherein said additive is a glycol which is triethylene glycol and is present in an amount between about 5 and about 10 percent by weight of said composition.
Claim 7
Dependent Claim
14 words
The composition according to claim 1 wherein said oxygen-releasing bleaching substance is a perborate.
Claim 8
Dependent Claim
123 words
A stabilized oxygen-active bleaching composition consisting essentially of about 50.00 percent by weight of a puffed borax, about 6.0 percent by weight of a benzoylimidazole, about 5.0 percent by weight of sodium perborate, about 32.0 percent by weight of sodium tripolyphosphate, about 6.0 percent by weight of a compound of the formula having a molecular weight of about 2,000 and a and c are selected such that the compound has about 10.0 percent of polyoxyethylene by weight, said puffed borax being characterized by a bulk density of about 15 lbs./cu. ft. and a particle size in the U.S. seive range from about -20 up to about +200 with the major portion in the U.S. sieve range of from about +40 to about +60.
References Cited (Backward Citations)
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |