Patent US2499909A successfully refreshed from Google Patents.
US2653919A
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Aqueous polyethylene dispersions produced by subjecting molten polymer in water to ahigh rate of shear
Assignee: Imperial Chemical Industries Ltd
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Filing: 1950-09-06
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Granted: 1953-09-29
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Expires: 1970-09-06
Abstract
No abstract record available.
Inventors
- 👤 Hunter Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:02
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE MANUFACTURE OF POLYETHYLENE DISPERSIONS WHICH COMPRISE SUBJECTING A MIXTURE OF MOLTEN, NORMALLY SOLID POLYETHYLENE AND ONE TO FIVE PARTS BY WEIGHT OF WATER PER PART OF POLYETHYLENE AT A TEMPERATURE ABOVE 115* C. AND AT A SUFFICIENT PRESSURE TO KEEP THE WATER IN THE LIQUID STATE, TO A HIGH RATE OF SHEAR SUCH THAT THE DISPERSED PARTICLES OF SAID POLYETHYLENE HAVE AN AVERAGE PARTICLE SIZE OF FROM ABOUT 5 TO 20 MICRONS, AND THEN RELEASING THE PRESSURE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE MANUFACTURE OF POLYETHYLENE DISPERSIONS WHICH COMPRISE SUBJECTING A MIXTURE OF MOLTEN, NORMALLY SOLID POLYETHYLENE AND ONE TO FIVE PARTS BY WEIGHT OF WATER PER PART OF POLYETHYLENE AT A TEMPERATURE ABOVE 115* C. AND AT A SUFFICIENT PRESSURE TO KEEP THE WATER IN THE LIQUID STATE, TO A HIGH RATE OF SHEAR SUCH THAT THE DISPERSED PARTICLES OF SAID POLYETHYLENE HAVE AN AVERAGE PARTICLE SIZE OF FROM ABOUT 5 TO 20 MICRONS, AND THEN RELEASING THE PRESSURE.
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) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |