US3131171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for the polymerization of olefins containing the product of a titanium halide and an organoaluminum compound mixed with a lower alkyl halide solution of aluminum chloride
Assignee: Monsanto Chemicals Ltd
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Filing: 1958-11-14
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Granted: 1964-04-28
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Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
THE PROCESS FOR THE POLYMERIZATION OF AT LEAST ONE ETHYLENICALLY UNSATURATED MONO-OLEFIN HYDROCARBON HAVING FROM 2 TO 8 CARBON ATOMS IN THE MONOMER MOLECULE AT A REACTION TEMPERATURE BELOW ABOUT 35*C. WHICH COMPRISES CONTACTING SAID MONO-OLEFIN WITH A CATALYST PREPARED BY MIXING (A) THE PRODUCT OBTAINED BY THE INTERACTION OF 1 MOLE OF A TITANIUM CHLORIDE WITH FROM 0.25 MOLE TO 4.0 MOLES OF AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF R3AL, R2ALCL, RALCL2, AND MIXTURES OF R2ALCL AND RALCL2, WHERE R IS AN ALKYL RADICAL, AND (B) FROM 0.02 TO 2.0 MOLES OF ALUMINUM CHLORIDE IN SOLUTION IN A LOWER ALKYL HALIDE.
References Cited (Backward Citations)
US2899416A
Cited
US2899418A
Cited
US2271956A
Cited
US2720292A
Cited
GB785314A
Cited
GB781837A
Cited
GB790399A
Cited
US2832759A
Cited
US2827447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |