US4744968A
Expired / Lapsed
US
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Stabilized aqueous hydrogen peroxide solution
Assignee: Bayer Corp
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Filing: 1985-09-03
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Granted: 1988-05-17
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Expires: 2005-09-03
Abstract
Abstract This invention relates to a novel stabilized aqueous hydrogen peroxide solution which comprises hydrogen peroxide in admixture with an aromatic polysulfonic acid, or a salt thereof.
Inventors
- 👤 Michael J. Malin
- 👤 Louis D. Sclafani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:42
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/01; C01B15/037
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
55 words
A stabilized aqueous hydrogen peroxide solution having a pH below 7 and an amount of Ferric ion up to about 2 ppm comprising hydrogen peroxide, acetanilide having a concentration which ranges between 0.74 mMol/L and 2.22 mMol/L, and o-benzene disulfonic acid or salt thereof at a concentration between about 0.86 mMol/L to about 1.62 mMol/L.
Claim 2
Dependent Claim
55 words
A stabilized aqueous hydrogen peroxide solution having a pH below 7 and an amount of Ferric ion up to about 2 ppm comprising hydrogen peroxide, acetanilide having a concentration which ranges between 0.74 mMol/L and 2.22 mMol/L, and o-benzene disulfonic acid or salt thereof at a concentration between about 0.86 mMol/L to about 1.62 mMol/L.
Claim 3
Dependent Claim
19 words
The hydrogen peroxide solution of claim 1 wherein hydrogen peroxide is present at from about 0.01% to about 30%.
Claim 4
Dependent Claim
19 words
The hydrogen peroxide solution of claim 2 wherein hydrogen peroxide is present at from about 0.1% to about 0.5%.
Claim 5
Dependent Claim
26 words
A hydrogen peroxide solution of claim 1 wherein said o-benzene disulfonic acid is present in an amount of from about 1.05 mMol/L to about 1.43 mMol/L.
Claim 6
Dependent Claim
20 words
The hydrogen peroxide solution of claim 1 wherein acetanilide is present at from about 1.11 mMol/L to about 1.85 mMol/L.
Claim 7
Dependent Claim
56 words
A stabilized aqueous hydrogen peroxide solution having an amount of Ferric ion up to about 2 ppm comprising: (a) from about 0.1% to about 0.5% hydrogen peroxide; (b) from about 0.86 mMol/L to about 1.45 mMol/L of o-benzene disulfonic acid, or a salt thereof; and (c) from about 1.11 mMol/L to about 1.85 mMol/L of acetanilide.
Claim 8
Dependent Claim
56 words
A stabilized aqueous hydrogen peroxide solution having an amount of Ferric ion up to about 2 ppm comprising: (a) from about 0.1% to about 0.5% hydrogen peroxide; (b) from about 0.86 mMol/L to about 1.45 mMol/L of o-benzene disulfonic acid, or a salt thereof; and (c) from about 1.11 mMol/L to about 1.85 mMol/L of acetanilide.
Claim 9
Independent Claim
59 words
A method of preparing a stabilized hydrogen peroxide solution having an amount of Ferric ion up to about 2 ppm comprising combining in admixture deionized water, hydrogen peroxide, acetanilide having a concentration which ranges between 0.74 mMol/L and 2.22 mMol/L and an o-benzene disulfonic acid or salt thereof in a concentration of about 0.86 mMol/L to about 1.62 mMol/L.
Claim 10
Independent Claim
59 words
A method of preparing a stabilized hydrogen peroxide solution having an amount of Ferric ion up to about 2 ppm comprising combining in admixture deionized water, hydrogen peroxide, acetanilide having a concentration which ranges between 0.74 mMol/L and 2.22 mMol/L and an o-benzene disulfonic acid or salt thereof in a concentration of about 0.86 mMol/L to about 1.62 mMol/L.
Claim 11
Dependent Claim
18 words
The method of claim 7 wherein said hydrogen peroxide is present at from about 0.01% to about 30%.
Claim 12
Dependent Claim
17 words
The method of claim 8 wherein hydrogen peroxide is present at from about 0.1% to about 0.5%.
Claim 13
Dependent Claim
20 words
The method of claim 9 where said o-benzene disulfonic acid is present from about 1.05 mMol/L to about 1.43 mMol/L.
Claim 14
Dependent Claim
17 words
The method of claim 7 wherein acetanilide is present from about 1.11 mMol/L to about 1.85 mMol/L.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
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