Patent US3058973A successfully refreshed from Google Patents.
US3058973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Hercules Powder Co
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Filing: 1960-06-07
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Granted: 1962-10-16
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Expires: 1980-06-07
Abstract
No abstract record available.
Inventors
- 👤 Richard H Greenwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:01
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/905; Y10S526/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN THE PROCESS FOR THE POLYMERIZATION OF AN ETHYLENICALLY UNSATURATED HYDROCARBON WHEREIN AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON IS CONTACTED IN THEE PRESENCE OF HYDROGEN WITH A TWO-COMPONENT CATALYST COMPOSITION COMPRISING (1) THE HYDROCARBON-INSOLUBLE REACTION PRODUCT SEPARATED FROM THE HYDROCARBON-SOLUBLE PRODUCTS OF THE REACTION OF TITANIUM TETRACHLORIDE WITH AN ORGANOMETALLIC COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, ZINC AND EARTH METALS, AND (2) AN ORGANOMETALLIC COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, ZINC AND EARTH METALS THE ORGANO PORTION OF EACH ORGANOMETALLIC COMPONENT COMPRISING A HYDROCARBON RADICAL, THE IMPROVEMENT COM-PRISING THE STEP OF PRETREATING THE HYDROCARBON-INSOLUBLE REACTION PRODUCT COMPONENT OF THE CATALYST WITH HYDROGENN AT A PRESSURE OF AT LEAST 15 P.S.I.A. AND A TEMPERATURE OF ABOUT 30 TO 120*C. BEFORE COMBINING WITH THE SECOND CATALYST COMPONENT.
Claim 2
Dependent Claim
143 words
IN THE PROCESS FOR THE POLYMERIZATION OF AN ETHYLENICALLY UNSATURATED HYDROCARBON WHEREIN AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON IS CONTACTED IN THEE PRESENCE OF HYDROGEN WITH A TWO-COMPONENT CATALYST COMPOSITION COMPRISING (1) THE HYDROCARBON-INSOLUBLE REACTION PRODUCT SEPARATED FROM THE HYDROCARBON-SOLUBLE PRODUCTS OF THE REACTION OF TITANIUM TETRACHLORIDE WITH AN ORGANOMETALLIC COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, ZINC AND EARTH METALS, AND (2) AN ORGANOMETALLIC COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS, ALKALINE EARTH METALS, ZINC AND EARTH METALS THE ORGANO PORTION OF EACH ORGANOMETALLIC COMPONENT COMPRISING A HYDROCARBON RADICAL, THE IMPROVEMENT COM-PRISING THE STEP OF PRETREATING THE HYDROCARBON-INSOLUBLE REACTION PRODUCT COMPONENT OF THE CATALYST WITH HYDROGENN AT A PRESSURE OF AT LEAST 15 P.S.I.A. AND A TEMPERATURE OF ABOUT 30 TO 120*C. BEFORE COMBINING WITH THE SECOND CATALYST COMPONENT.
References Cited (Backward Citations)
BE549910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |