US4039475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable, pumpable, aqueous suspensions of organic peroxides
Assignee: Akzona Inc
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Filing: 1976-03-15
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Granted: 1977-08-02
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Expires: 1996-03-15
Abstract
Abstract Stable, pumpable, highly concentrated aqueous suspensions of organic peroxides containing (a) nonionic emulsifiers having a maximum HLB value of 12.5 and (b) nonionic emulsifiers having a minimum HLB value of 12.5 or anionic emulsifiers.
Inventors
- 👤 Hendrik Harm Jannes Oosterwijk
- 👤 Reinder Torenbeek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:27
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F2/00; C08F2/12; C08F2/16; C08F2/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A pumpable, aqueous suspension comprising at least about 20 weight % of an organic peroxide, which is solid at about 20° C., at least about 0.2 weight % of a nonionic emulsifier having a maximum HLB-value of 12.5 and an emulsifier selected from the group consisting of nonionic emulsifiers having a minimum HLB-value of 12.5, and anionic emulsifiers, said nonionic emulsifier of minimum HLB-value of 12.5 present in an amount of at least about 0.2 weight %, and said anionic emulsifier present in an amount of at least about 0.01 weight %.
Claim 2
Dependent Claim
92 words
A pumpable, aqueous suspension comprising at least about 20 weight % of an organic peroxide, which is solid at about 20° C., at least about 0.2 weight % of a nonionic emulsifier having a maximum HLB-value of 12.5 and an emulsifier selected from the group consisting of nonionic emulsifiers having a minimum HLB-value of 12.5, and anionic emulsifiers, said nonionic emulsifier of minimum HLB-value of 12.5 present in an amount of at least about 0.2 weight %, and said anionic emulsifier present in an amount of at least about 0.01 weight %.
Claim 3
Dependent Claim
13 words
A composition as in claim 1 wherein the organic peroxide is a peroxydicarbonate.
Claim 4
Dependent Claim
11 words
A composition as in claim 1 additionally containing a thickening agent.
Claim 5
Dependent Claim
23 words
A composition as in claim 3 containing 0.05 to 10.0 weight % of thickening agent based on the total weight of the composition.
Claim 6
Dependent Claim
42 words
A composition as in claim 1 characterized in that the nonionic emulsifier with maximum HLB of 12.5 is nonylphenol polyethylene oxide ether, a linear alcohol polyethylene oxide ether, a fatty alcohol polyethylene oxide ether, sorbitan monolaurate or sorbitan monooleate polyethylene oxide ether.
Claim 7
Dependent Claim
31 words
A composition as in claim 1 characterized in that the nonionic emulsifier having a minimum HLB of 12.5 is a nonylphenyl polyethylene oxide ether, or a linear alcohol polyethylene oxide ether.
Claim 8
Dependent Claim
13 words
A composition as in claim 1 wherein the anionic emulsifier is sodium-dodecylbenzene sulphonate.
Claim 9
Dependent Claim
18 words
A composition as in claim 3 wherein the thickening agent is polyvinyl alcohol, hydroxyethyl cellulose, or methyl cellulose.
References Cited (Backward Citations)
US3061554A
Cited
US3182026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |