Patent US2546244A successfully refreshed from Google Patents.
US2546244A
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Incremental addition of alkaline material in emulsion polymerization
Assignee: Phillips Petroleum Co
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Filing: 1947-05-19
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Granted: 1951-03-27
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Expires: 1967-05-19
Abstract
No abstract record available.
Inventors
- 👤 Charles M Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:35
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; B; B01; B01J; B01J8/00; B01J8/0015; B01J8/003
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A PROCESS FOR THE PRODUCTION OF A POLYMERIC MATERIAL OF HIGH MOLECULAR WEIGHT, WHICH COMPRISES POLYMERIZING IN AN AQUEOUS EMULSION A MONOMERIC MATERIAL COMPRISING AN UNSATURATED ORGANIC COMPOUND HAVING A CH2=C< GROUP BY INITIALLY ESTABLISHING A PH FOR SAID EMULSION BETWEEN 9.5 AND 11.5, PROMOTING SAID POLYMERIZATION WITH A COMPOSITION COMPRISING 0.03 TO 1 PART OF A WATER-SOLUBLE FERRICYANIDE, 0.05 TO 1 PART OF A DIAZO THIOETHER HAVING THE FORMULA
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) | 1954-03-26 | 1954-09-25 | 1955-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-26 | 1958-09-25 | 1959-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-26 | 1962-09-25 | 1963-03-27 | $7700.00 | Window Closed / Lapsed |