Patent US4547308A successfully refreshed from Google Patents.
US4547308A
Expired / Lapsed
US
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Aqueous emulsion of tertiary butyl hydroperoxide
Assignee: Akzo NV
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Filing: 1983-11-28
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Granted: 1985-10-15
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Expires: 2003-11-28
Abstract
Abstract Aqueous emulsion of tertiary butyl hydroperoxide containing a protective colloid insuring stability after a storage period of two months. The protective colloid used is hydroxyethyl cellulose having a degree of substitution of more than 2.0, particularly 2.3-3.0. The emulsion may contain 0.1-10% by weight of the colloid and, optionally, up to 5% by weight of a surfactant.
Inventors
- 👤 Reinder Torenbeek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:20
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C07; C07C; C07C407/00; C07C407/003; C07C407/006; C08F2/00; C08F2/38; C08F2/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A stable aqueous emulsion of tertiary butyl hydroperoxide comprising 20 to 70% by weight of said tertiary butyl hydroperoxide and 0.1 to 10% by weight of hydroxyethyl cellulose having a degree of molar substitution greater than 2.0.
Claim 2
Dependent Claim
37 words
A stable aqueous emulsion of tertiary butyl hydroperoxide comprising 20 to 70% by weight of said tertiary butyl hydroperoxide and 0.1 to 10% by weight of hydroxyethyl cellulose having a degree of molar substitution greater than 2.0.
Claim 3
Dependent Claim
20 words
The aqueous emulsion of claim 1, wherein said emulsion contains up to 5% by weight of a surface active agent.
Claim 4
Dependent Claim
41 words
A stable aqueous emulsion of tertiary butyl hydroperoxide comprising 20 to 70% by weight of said tertiary butyl hydroperoxide and 0.1 to 10% by weight of hydroxyethyl cellulose having a degree of molar substitution in the range of 2.3 to 3.0.
Claim 5
Dependent Claim
41 words
A stable aqueous emulsion of tertiary butyl hydroperoxide comprising 20 to 70% by weight of said tertiary butyl hydroperoxide and 0.1 to 10% by weight of hydroxyethyl cellulose having a degree of molar substitution in the range of 2.3 to 3.0.
Claim 6
Dependent Claim
20 words
The aqueous emulsion of claim 3, wherein said emulsion contains up to 5% by weight of a surface active agent.
Claim 7
Dependent Claim
19 words
The aqueous emulsion of claim 3, wherein the hydroxyethyl cellulose has a degree of molar substitution of about 2.5.
Claim 8
Dependent Claim
20 words
The aqueous emulsion of claim 5, wherein said emulsion contains up to 5% by weight of a surface active agent.
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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |