US2647109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization in the presence of an improved reducing composition
Assignee: Phillips Petroleum Co
•
Filing: 1950-02-27
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Granted: 1953-07-28
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Expires: 1970-02-27
Abstract
No abstract record available.
Inventors
- 👤 Izaak M Kolthoff
- 👤 Avrom I Medalia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:46
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE PRODUCTION OF A POLYMER OF HIGH MOLECULAR WEIGHT, WHICH COMPRISES POLYMERIZING A MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE WHILE DISPERSED IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A POLYMERIZATION CATALYST COMPOSITION COMPRISING AN ORGANIC HYDROPEROXIDE, A WATER-SOLUBLE IRON SALT AND A WATER-SOLUBLE PYROPHOSPHATE, AND A REDUCING COMPOSITION RESULTING FROM TREATING 0.1 TO 10 MILLIMOLS OF A SUGAR WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A WATER-SOLUBLE FERROUS SALT WHILE IN AQUEOUS SOLUTION, WITH A MOL RATIO OF SAID SUGAR TO HYDROGEN PEROXIDE BETWEEN 0.3:1 AND 5:1 AND OF SAID SUGAR TO FERROUS SALT BETWEEN 1:1 AND 10:1, SAID MILLIMOLS BEING PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE PRODUCTION OF A POLYMER OF HIGH MOLECULAR WEIGHT, WHICH COMPRISES POLYMERIZING A MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE WHILE DISPERSED IN AN AQUEOUS MEDIUM IN THE PRESENCE OF A POLYMERIZATION CATALYST COMPOSITION COMPRISING AN ORGANIC HYDROPEROXIDE, A WATER-SOLUBLE IRON SALT AND A WATER-SOLUBLE PYROPHOSPHATE, AND A REDUCING COMPOSITION RESULTING FROM TREATING 0.1 TO 10 MILLIMOLS OF A SUGAR WITH HYDROGEN PEROXIDE IN THE PRESENCE OF A WATER-SOLUBLE FERROUS SALT WHILE IN AQUEOUS SOLUTION, WITH A MOL RATIO OF SAID SUGAR TO HYDROGEN PEROXIDE BETWEEN 0.3:1 AND 5:1 AND OF SAID SUGAR TO FERROUS SALT BETWEEN 1:1 AND 10:1, SAID MILLIMOLS BEING PER 100 PARTS BY WEIGHT OF SAID MONOMERIC MATERIAL.
References Cited (Backward Citations)
US2380476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |