US2606174A
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Emulsion polymerization using ultrasonic vibrations to effect emulsification
Assignee: Phillips Petroleum Co
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Filing: 1947-08-25
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Granted: 1952-08-05
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Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Izaak M Kolthoff
- 👤 Charles W Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:24
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
AN IMPROVED PROCESS FOR POLYMERIZING A MONOMERIC MATERIAL COMPRISING A MAJOR AMOUNT OF A CONJUGATED DIOLEFIN POLYMERIZABLE WHEN DISPERSED IN AN AQUEOUS MEDIUM, WHICH COMPRISES ADMIXING SUCH A MONOMERIC MATERIAL WITH AN AQUEOUS SOLUTION OF AN EMULSIFYING AGENT AND A POLYMERIZATION CATALYST FOR EMULSION POLYMERIZATION, SUBJECTING A RESULTING MIXTURE TO ULTRASONIC VIBRATION IN THE RANGE OF 20 TO 500 KILOCYCLES PER SECOND AND OF AN INTENSITY AND FOR A PERIOD SUFFICIENT ONLY TO TRANSFORM SAID MIXTURE INTO A STABLE EMULSION, AND SUBSEQUENTLY MAINTAINING A RESULTING EMULSION AT A POLYMERIZATION TEMPERATURE FOR A TIME SUFFICIENT TO EFFECT POLYMERIZATION OF SAID MONOMERIC MATERIAL.
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) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |