US3629355A
Expired / Lapsed
US
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Preparation of linear olefin products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-03-04
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Granted: 1971-12-21
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Expires: 1989-03-04
Abstract
Abstract A LINEAR ALPHA OLEFIN PRODUCT COMPRISING AT LEAST 90 MOLE PERCENT LINEAR ALPHA OLEFINS IS PREPARED BY POLYMERIZING ETHYLENE IN THE PRESENCE OF A CATALYST CONTAINING THE REACTION PRODUCT OF A TRANSITION METAL HALIDE AND AN ALUMINUM ALKYL, THE REACTION BEING EFFECTED IN A POLAR SOLVENT AT ETHYLENE PRESSURES IN EXCESS OF 50 P.S.I.A. AND A MOLE RATIO OF ETHYLENE TO PRODUCT OLEFIN OF AT LEAST ABOUT 0.8.
Inventors
- 👤 Arthur W Langer Jr
- 👤 Herschel T White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:21
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08; C08F; C08F10/00; C08F10/02; C07C2527/00; C07C2527/06; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/12; C07C2531/14; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |