US2569462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of unsaturated organic compounds
Assignee: Hercules Powder Co
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Filing: 1946-03-22
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Granted: 1951-10-02
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Expires: 1966-03-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:21
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE PROCESS WHICH COMPRISES POLYMERIZING AN ORGANIC COMPOUND CONTAINING THE CH2=C< GROUP AND WHICH IS CAPABLE OF BEING POLYMERIZED BY A PEROXIDE CATALYST, IN AQUEOUS EMULSION IN THE PRESENCE OF A CATALYST COMPRISING A WATERSOLUBLE PERSULFATE AND AN ARYL(DIALKYL) METHYL HYDROPEROXIDE IN WHICH EACH ALKYL GROUP CONTAINS NOT MORE THAN 4 CARBON ATOMS, SAID HYDROPEROXIDE BEING IN AN AMOUNT PROVIDING ACTIVE OXYGEN EQUIVALENT TO BETWEEN ABOUT 5% AND ABOUT 50% OF THE ACTIVE OXYGEN PROVIDED BY THE PERSULFATE.
Claim 2
Dependent Claim
78 words
THE PROCESS WHICH COMPRISES POLYMERIZING AN ORGANIC COMPOUND CONTAINING THE CH2=C< GROUP AND WHICH IS CAPABLE OF BEING POLYMERIZED BY A PEROXIDE CATALYST, IN AQUEOUS EMULSION IN THE PRESENCE OF A CATALYST COMPRISING A WATERSOLUBLE PERSULFATE AND AN ARYL(DIALKYL) METHYL HYDROPEROXIDE IN WHICH EACH ALKYL GROUP CONTAINS NOT MORE THAN 4 CARBON ATOMS, SAID HYDROPEROXIDE BEING IN AN AMOUNT PROVIDING ACTIVE OXYGEN EQUIVALENT TO BETWEEN ABOUT 5% AND ABOUT 50% OF THE ACTIVE OXYGEN PROVIDED BY THE PERSULFATE.
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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) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |