US3255164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redox polymerization incorporating step of dissolving reducing agent in monomer
Assignee: Dow Chemical Co
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Filing: 1961-05-25
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Granted: 1966-06-07
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Expires: 1981-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert L Visger
- 👤 Harold G Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:22
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PROCESS FOR THE POLYMERIZATION OF MONOMERIC VINYLIDENE COMPOUNDS IN AQUEOUS EMULSION UTILIZING A REDOX POLYMERIZATION CATALYST COMPRISING SULFUR DIOXIDE AND A PEROXYGEN COMPOUND, THE IMPROVEMENT COMPRISING DISSOLVING SULFUR DIOXIDE IN THE MONOMER TO BE POLYMERIZED AND ADDING THE RESULTING SOLUTION TO AN AQUEOUS MEDIUM CONTAINING A PEROXYGEN COMPOUND UNDER POLYMERIZING CONDITIONS, SAID SOLUTION ADDED AT A RATE WHICH IS SUBSTANTIALLY EQUAL TO THE RATE AT WHICH THE MONOMER IS POLYMERIZED.
Claim 2
Dependent Claim
72 words
IN A PROCESS FOR THE POLYMERIZATION OF MONOMERIC VINYLIDENE COMPOUNDS IN AQUEOUS EMULSION UTILIZING A REDOX POLYMERIZATION CATALYST COMPRISING SULFUR DIOXIDE AND A PEROXYGEN COMPOUND, THE IMPROVEMENT COMPRISING DISSOLVING SULFUR DIOXIDE IN THE MONOMER TO BE POLYMERIZED AND ADDING THE RESULTING SOLUTION TO AN AQUEOUS MEDIUM CONTAINING A PEROXYGEN COMPOUND UNDER POLYMERIZING CONDITIONS, SAID SOLUTION ADDED AT A RATE WHICH IS SUBSTANTIALLY EQUAL TO THE RATE AT WHICH THE MONOMER IS POLYMERIZED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |