Patent US2954367A successfully refreshed from Google Patents.
US2954367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of vinyl hydrocarbons with a two-component catalyst system
Assignee: Hercules Powder Co
•
Filing: 1955-07-29
•
Granted: 1960-09-27
•
Expires: 1975-07-29
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
THE PROCESS OF PREPARING A POLY(OLEFIN HYDROCARBON) WHICH COMPRISES POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED OLEFIN HYDROCARBON CONTAINING A VINYL GROUP AT A TEMPERATURE OF FROM ABOUT-50*C. TO ABOUT 150*C. IN AN INERT LIQUID ORGANIC DILUENT BY CONTACTING SAID UNSATURATED HYDROCARBON WITH AT LEAST A CATALYTIC AMOUNT OF A TWO-COMPONENT CATALYST COMPOSITION COMPRISING (1) THE REACTION MIXTURE PRODUCED PRIOR TO USE IN THE POLYMERIZATION PROCESS BY THE REACTION IN AN INERT LIQUID HYDROCARBON DILUENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE HALIDES, ACETYLACETONATES AND ALKOXIDES OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV-B, V-B, VI-B AND VIII OF THE PERIODIC TABLE WITH AN ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, MAGNESIUM AND ALUMINUM IN A MOLAR RATIO OF FROM ABOUT 1:0.1 TO ABOUT 1:100 AND (2) A HALOGEN-FREE ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, MAGNESIUM AND ALUMINUM IN AN AMOUNT SUCH THAT THE MOLAR RATIO OF THE SECOND CATALYST COMPONENT TO THE FIRST CATALYST COMPONENT WILL BE FROM ABOUT 0.05:1 TO 100:19
Claim 2
Dependent Claim
184 words
THE PROCESS OF PREPARING A POLY(OLEFIN HYDROCARBON) WHICH COMPRISES POLYMERIZING AT LEAST ONE ETHYLENICALLY UNSATURATED OLEFIN HYDROCARBON CONTAINING A VINYL GROUP AT A TEMPERATURE OF FROM ABOUT-50*C. TO ABOUT 150*C. IN AN INERT LIQUID ORGANIC DILUENT BY CONTACTING SAID UNSATURATED HYDROCARBON WITH AT LEAST A CATALYTIC AMOUNT OF A TWO-COMPONENT CATALYST COMPOSITION COMPRISING (1) THE REACTION MIXTURE PRODUCED PRIOR TO USE IN THE POLYMERIZATION PROCESS BY THE REACTION IN AN INERT LIQUID HYDROCARBON DILUENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE HALIDES, ACETYLACETONATES AND ALKOXIDES OF A METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS IV-B, V-B, VI-B AND VIII OF THE PERIODIC TABLE WITH AN ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS, MAGNESIUM AND ALUMINUM IN A MOLAR RATIO OF FROM ABOUT 1:0.1 TO ABOUT 1:100 AND (2) A HALOGEN-FREE ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, MAGNESIUM AND ALUMINUM IN AN AMOUNT SUCH THAT THE MOLAR RATIO OF THE SECOND CATALYST COMPONENT TO THE FIRST CATALYST COMPONENT WILL BE FROM ABOUT 0.05:1 TO 100:19
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |