US3365808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for drying of polyolefins in an elongated transfer zone
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-05-09
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Granted: 1968-01-30
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph James
- 👤 Wylie Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/008; Y; Y10; Y10S; Y10S159/00; Y10S159/10; Y10S159/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD OF DRYING A HYDROCARBON WET SOLID POLYMER OF AN ALPHA MONOOLEFIN WHICH COMPRISES: ADMIXING AND CONTACTING SAID WET SOLID POLYMER WITH WATER VAPOR AT A TEMPERATURE OF AT LEAST 150*F. IN AN ELONGATED TRANSFER ZONE TO FORM A SUSPENSION OF SAID POLYMER IN SAID WATER VAPOR; MAINTAINING SAID POLYMER AND WATER VAPOR IN CONTACT WHILE FLOWING SAID SUSPENSION THROUGH SAID ZONE AT A VELOCITY SUFFICIENT TO REMOVE SUBSTANTIALLY SAID HYDROCARBON FROM SAID POLYMER; AND RECOVERING DRIED POLYMER FROM SAID SUSPENSION; SAID WATER VAPOR BEING EMPLOYED IN AN AMOUNT OF NO GREATER THAN ABOUT 4 POUNDS PER POUND OF HYDROCARCON REMOVED FROM SAID POLYMER AND SAID SUSPENSION BEING FLOWED AT A VELOCITY FROM ABOUT 100 TO ABOUT 160 FEET PER SECOND; SAID POLYMER BEING WET WITH FROM ABOUT 3% TO ABOUT 60% BY WEIGHT OF HYDROCARBON.
Claim 2
Independent Claim
137 words
A METHOD OF DRYING A HYDROCARBON WET SOLID POLYMER OF AN ALPHA MONOOLEFIN WHICH COMPRISES: ADMIXING AND CONTACTING SAID WET SOLID POLYMER WITH WATER VAPOR AT A TEMPERATURE OF AT LEAST 150*F. IN AN ELONGATED TRANSFER ZONE TO FORM A SUSPENSION OF SAID POLYMER IN SAID WATER VAPOR; MAINTAINING SAID POLYMER AND WATER VAPOR IN CONTACT WHILE FLOWING SAID SUSPENSION THROUGH SAID ZONE AT A VELOCITY SUFFICIENT TO REMOVE SUBSTANTIALLY SAID HYDROCARBON FROM SAID POLYMER; AND RECOVERING DRIED POLYMER FROM SAID SUSPENSION; SAID WATER VAPOR BEING EMPLOYED IN AN AMOUNT OF NO GREATER THAN ABOUT 4 POUNDS PER POUND OF HYDROCARCON REMOVED FROM SAID POLYMER AND SAID SUSPENSION BEING FLOWED AT A VELOCITY FROM ABOUT 100 TO ABOUT 160 FEET PER SECOND; SAID POLYMER BEING WET WITH FROM ABOUT 3% TO ABOUT 60% BY WEIGHT OF HYDROCARBON.
References Cited (Backward Citations)
US3218729A
Cited
US3190867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |