US2914515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization process
Assignee: Sunoco Inc
•
Filing: 1958-01-22
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Granted: 1959-11-24
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Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 Archibald P Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:00
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; C08F10/06; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
PROCESS FOR THE POLYMERIZATION OF ALPHA-OLEFINS WHICH COMPRISES CONTACTING, UNDER POLYMERIZING CONDITIONS, AN ALPHA-OLEFIN HAVING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WITH A POLYMERIZATION REACTION MIXTURE PREPARED BY ADMIXING A HYDROCARBON HAVING AN ACIDIC HYDROGEN ATOM WITH A DISPERSION IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM OF SOLID PARTICLES OF A SUBHALIDE OF A METAL OF GROUPS IV, V AND VI OF THE PERIODIC TABLE, THE AMOUNT OF SAID HYDROCARBON HAVING AN ACIDIC HYDROGEN ATOM BEING FROM 0.005 TO 0.15 MOLE PER MOLE OF THE METAL SUBHALIDE, AND THEREAFTER ADDING A POLYMERIZATION ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF METAL ALKYLS AND METAL HYDRIDES TO THE DISPERSION TO FORM SAID POLYMERIZATION REACTION MIXTURE.
Claim 2
Dependent Claim
115 words
PROCESS FOR THE POLYMERIZATION OF ALPHA-OLEFINS WHICH COMPRISES CONTACTING, UNDER POLYMERIZING CONDITIONS, AN ALPHA-OLEFIN HAVING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WITH A POLYMERIZATION REACTION MIXTURE PREPARED BY ADMIXING A HYDROCARBON HAVING AN ACIDIC HYDROGEN ATOM WITH A DISPERSION IN AN INERT LIQUID HYDROCARBON REACTION MEDIUM OF SOLID PARTICLES OF A SUBHALIDE OF A METAL OF GROUPS IV, V AND VI OF THE PERIODIC TABLE, THE AMOUNT OF SAID HYDROCARBON HAVING AN ACIDIC HYDROGEN ATOM BEING FROM 0.005 TO 0.15 MOLE PER MOLE OF THE METAL SUBHALIDE, AND THEREAFTER ADDING A POLYMERIZATION ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF METAL ALKYLS AND METAL HYDRIDES TO THE DISPERSION TO FORM SAID POLYMERIZATION REACTION MIXTURE.
References Cited (Backward Citations)
US2827446A
Cited
US2843577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |