US2881156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic conversion and catalysts
Assignee: Standard Oil Co
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Filing: 1956-03-28
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Granted: 1959-04-07
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Expires: 1976-03-28
Abstract
No abstract record available.
Inventors
- 👤 Frank L Pilar
- 👤 Herbert N Friedlander
- 👤 Omar O Juveland
- 👤 Field Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:45
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A PROCESS FOR THE PREPARATION OF A NONMALLY SOLID POLYMER WHICH COMPRISES CONTACTING A FEEDSTOCK CONTAINING AT LEAST ONE UNBRANCHED NORMALLY GASEOUS 1-ALKENE WITH A POLYMERIZATION CATALYST PREPARED BY ADMIXING AN ALKALI METAL WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID CONTACTING UNDER POLYMERIZATION CONDITIONS IN THE PRESENCE OF AN ADDED ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES IN A PROPORTION OF FROM ABOUT 0.01% TO 20% BY WEIGHT, BASED ON SAID ALKALI METAL, SUFFICIENT TO EFFECT SUBSTANTIAL PROMOTION OF THE ACTIVITY OF SAID POLYMERIZATION CATALYST, AND RECOVERING A NORMALLY SOLID POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
115 words
IN A PROCESS FOR THE PREPARATION OF A NONMALLY SOLID POLYMER WHICH COMPRISES CONTACTING A FEEDSTOCK CONTAINING AT LEAST ONE UNBRANCHED NORMALLY GASEOUS 1-ALKENE WITH A POLYMERIZATION CATALYST PREPARED BY ADMIXING AN ALKALI METAL WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM AND HAFNIUM, THE IMPROVEMENT WHICH COMPRISES EFFECTING SAID CONTACTING UNDER POLYMERIZATION CONDITIONS IN THE PRESENCE OF AN ADDED ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES IN A PROPORTION OF FROM ABOUT 0.01% TO 20% BY WEIGHT, BASED ON SAID ALKALI METAL, SUFFICIENT TO EFFECT SUBSTANTIAL PROMOTION OF THE ACTIVITY OF SAID POLYMERIZATION CATALYST, AND RECOVERING A NORMALLY SOLID POLYMER THUS PRODUCED.
References Cited (Backward Citations)
US2647109A
Cited
US2691647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |