US2694002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Phillips Petroleum Co
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Filing: 1949-08-11
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Granted: 1954-11-09
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Expires: 1969-08-11
Abstract
No abstract record available.
Inventors
- 👤 George E Hays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:32
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/10; C07C11/00; C07C11/02; C07C2/14; C07C2/18; C07C2521/00; C07C2521/12; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173; Y; Y10; Y10S; Y10S208/00; Y10S208/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN IMPROVED PROCESS FOR THE POLYMERIZATION OF OLEFINS OF FROM THREE TO FIVE CARBON ATOMS WHICH COMPRISES PREHEATING SAID OLEFINS TO A TEMPERATURE OF ABOUT 350* F., PASSING THE PREHEATED OLEFINS OVER A SILICA-ALUMINA CATALYST IN A FIRST POLYMERIZATION ZONE UNDER A PRESSURE OF ABOUT 1.000 POUNDS PER SQUARE INCH GAGE TO EFFECT POLYMERIZATION OF SAID OLEFINS AT A CONVERSION LEVEL BETWEEN ABOUT 40 AND ABOUT 60 PER CENT, WITHDRAWING A PARTIALLY POLYMERIZED EFFLUIENT FROM SAID FIRST POLYMERIZATION ZONE, PASSING EFFLUENT DIRECTLY OVER A SOLID PHOSPHORIC ACIDTYPE CATALYST IN A SECOND POLYMERIZATION ZONE AT A TEMPERATURE OF ABOUT 350* F. AND UNDER A PRESSURE OF ABOUT 1000 POUNDS PER SQUARE INCH GAGE TO EFFECT FURTHER POLYMERIZATION TO A TOTAL CONVERSION OF FROM 75 TO 95 PER CENT, AND RECOVERING POLYMERIZED OLEFINS CONSISTING ESSENTIALLY OF THOSE HAVING FROM EIGHT TO TWELVE CARBON ATOMS PER MOLECULE AS A PRODUCT FROM A RESULTING EFFLUENT.
Claim 2
Dependent Claim
151 words
AN IMPROVED PROCESS FOR THE POLYMERIZATION OF OLEFINS OF FROM THREE TO FIVE CARBON ATOMS WHICH COMPRISES PREHEATING SAID OLEFINS TO A TEMPERATURE OF ABOUT 350* F., PASSING THE PREHEATED OLEFINS OVER A SILICA-ALUMINA CATALYST IN A FIRST POLYMERIZATION ZONE UNDER A PRESSURE OF ABOUT 1.000 POUNDS PER SQUARE INCH GAGE TO EFFECT POLYMERIZATION OF SAID OLEFINS AT A CONVERSION LEVEL BETWEEN ABOUT 40 AND ABOUT 60 PER CENT, WITHDRAWING A PARTIALLY POLYMERIZED EFFLUIENT FROM SAID FIRST POLYMERIZATION ZONE, PASSING EFFLUENT DIRECTLY OVER A SOLID PHOSPHORIC ACIDTYPE CATALYST IN A SECOND POLYMERIZATION ZONE AT A TEMPERATURE OF ABOUT 350* F. AND UNDER A PRESSURE OF ABOUT 1000 POUNDS PER SQUARE INCH GAGE TO EFFECT FURTHER POLYMERIZATION TO A TOTAL CONVERSION OF FROM 75 TO 95 PER CENT, AND RECOVERING POLYMERIZED OLEFINS CONSISTING ESSENTIALLY OF THOSE HAVING FROM EIGHT TO TWELVE CARBON ATOMS PER MOLECULE AS A PRODUCT FROM A RESULTING EFFLUENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |