US2886560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene
Assignee: BASF SE
•
Filing: 1955-11-28
•
Granted: 1959-05-12
•
Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Weber Heinz
- 👤 Boehm Hans
- 👤 Schiller Georg
- 👤 Stange Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR THE POLYMERIZATION OF GASEOUS ETHYLENE IN THE PRESENCE OF A POLYMERIZATION CATALYST WHICH COMPRISES POLYMERIZING THE GASEOUS ETHYLENE AT A TEMPERATURE FROM 10-100*C. AND A PRESSURE OF 1-100 ATMOSPHERES ABSOLUTE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A MIXED CATALYST OF ETHYL ALUMINUM SESQUICHLORIDE AND TITANIUM TETRACHLORIDE HAVING A RATIO OF ABOUT 0.50.8 MOL OF TITANIUM TETRACHLORIDE PER ML OF ETHYL ALUMINUM SESQUICHLORIDE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR THE POLYMERIZATION OF GASEOUS ETHYLENE IN THE PRESENCE OF A POLYMERIZATION CATALYST WHICH COMPRISES POLYMERIZING THE GASEOUS ETHYLENE AT A TEMPERATURE FROM 10-100*C. AND A PRESSURE OF 1-100 ATMOSPHERES ABSOLUTE IN THE PRESENCE OF A CATALYTIC AMOUNT OF A MIXED CATALYST OF ETHYL ALUMINUM SESQUICHLORIDE AND TITANIUM TETRACHLORIDE HAVING A RATIO OF ABOUT 0.50.8 MOL OF TITANIUM TETRACHLORIDE PER ML OF ETHYL ALUMINUM SESQUICHLORIDE.
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |