Patent US2867612A successfully refreshed from Google Patents.
US2867612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of ethylene
Assignee: Bayer AG
•
Filing: 1955-10-05
•
Granted: 1959-01-06
•
Expires: 1975-10-05
Abstract
No abstract record available.
Inventors
- 👤 Pieper Gustav
- 👤 Stein Eberhard
- 👤 Rickert Hans-Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:35
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/10; F16J1/14; F16J1/22; B; B22; B22D; B22D18/00; B22D18/02; B22D18/04; C; C07; C07C; C07C51/00; C07C51/16; C07C51/27; C07C51/275; C07C51/42; C07C51/48; C08; C08F; C08F10/00; C08F110/00; C08F110/02; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS OF ETHYLENE WHICH COMPRISES MAINTAINING THE ETHYLENE IN AN INERT MEDIUM AT TEMPERATURES RANGING BETWEEN ABOUT 10* AND 400* C., IN CONTACT WITH A CATALYST MIXTURE OBTAINED BY REACTING (1) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE, TITANIUM TRICHLORIDE, AND ZIRCONIUM TETRACHLORIDE, WITH (2) A COMPOUND OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM AND POTASSIUM WHICH CONTAINS AN ORGANIC RADICAL OF 1-18 CARBON ATOMS BONDED TO THE METAL THROUGH A CARBON ATOM, SAID ALKALI METAL BEING THE SOLE METAL PRESENT IN THE COMPOUND; SAID ALKLAI METAL COMPOUND BEING EMPLOYED IN QUANTITIES OF ABOUT 1.2-12 MOLES PER 1 MOLE OF SAID METAL HALIDE.
Claim 2
Dependent Claim
118 words
A PROCESS FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS OF ETHYLENE WHICH COMPRISES MAINTAINING THE ETHYLENE IN AN INERT MEDIUM AT TEMPERATURES RANGING BETWEEN ABOUT 10* AND 400* C., IN CONTACT WITH A CATALYST MIXTURE OBTAINED BY REACTING (1) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TITANIUM TETRACHLORIDE, TITANIUM TRICHLORIDE, AND ZIRCONIUM TETRACHLORIDE, WITH (2) A COMPOUND OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM AND POTASSIUM WHICH CONTAINS AN ORGANIC RADICAL OF 1-18 CARBON ATOMS BONDED TO THE METAL THROUGH A CARBON ATOM, SAID ALKALI METAL BEING THE SOLE METAL PRESENT IN THE COMPOUND; SAID ALKLAI METAL COMPOUND BEING EMPLOYED IN QUANTITIES OF ABOUT 1.2-12 MOLES PER 1 MOLE OF SAID METAL HALIDE.
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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |