US2962491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-12-21
•
Granted: 1960-11-29
•
Expires: 1975-12-21
Abstract
No abstract record available.
Inventors
- 👤 Mertzweiller Joseph Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:53
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE PROCESS FOR POLYMERIZING ALPHA OLEFINS AND REDUCING REACTOR FOULING TENDENCIES WHICH COMPRISES FORMING A CATALYST MIXTURE BY INTIMATELY CONTACTING AN ALKYL ALUMINUM HALIDE WITH A TETRAHALIDE OF A METAL OF GROUP IV-B OF THE PERIODIC SYSTEM AT A TEMPERATURE BETWEEN ABOUT -60 TO 200*F. AND REDUCING MORE THAN 30% OF SAID REDUCIBLE HEAVY METAL COMPOUND TO A LOWER VALENCY STATE, ADDING TO AN INERT LIQUID DILUENT FROM 0.01 TO 0.2 WT. PERCENT OF SAID CATALYST MIXTURE AND FROM 0.002 TO 0.2 WT. PERCENT OF AN UNREDUCED HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND GROUP IVB, GROUP VB AND GROUP VIB METALS, BOTH BASED ON THE WEIGHT OF DIULENT, AND CONTACTING THE RESULTING MIXTURE WITH A POLYMERIZABLE OLEFIN AT A TEMPERATURE BETWEEN 30* AND 500*F.
Claim 2
Dependent Claim
130 words
THE PROCESS FOR POLYMERIZING ALPHA OLEFINS AND REDUCING REACTOR FOULING TENDENCIES WHICH COMPRISES FORMING A CATALYST MIXTURE BY INTIMATELY CONTACTING AN ALKYL ALUMINUM HALIDE WITH A TETRAHALIDE OF A METAL OF GROUP IV-B OF THE PERIODIC SYSTEM AT A TEMPERATURE BETWEEN ABOUT -60 TO 200*F. AND REDUCING MORE THAN 30% OF SAID REDUCIBLE HEAVY METAL COMPOUND TO A LOWER VALENCY STATE, ADDING TO AN INERT LIQUID DILUENT FROM 0.01 TO 0.2 WT. PERCENT OF SAID CATALYST MIXTURE AND FROM 0.002 TO 0.2 WT. PERCENT OF AN UNREDUCED HALIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND GROUP IVB, GROUP VB AND GROUP VIB METALS, BOTH BASED ON THE WEIGHT OF DIULENT, AND CONTACTING THE RESULTING MIXTURE WITH A POLYMERIZABLE OLEFIN AT A TEMPERATURE BETWEEN 30* AND 500*F.
References Cited (Backward Citations)
CA502597A
Cited
BE533362A
Cited
BE534792A
Cited
BE538782A
Cited
BE540459A
Cited
US2905645A
Cited
US2721189A
Cited
US2839518A
Cited
US2850488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |