US2871276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of alpha olefins in the presence of an air3 catalyst
Assignee: Standard Oil Co
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Filing: 1954-08-11
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Granted: 1959-01-27
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Expires: 1974-08-11
Abstract
No abstract record available.
Inventors
- 👤 James R Eiszner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR PREPARING A LIQUID OLEFIN POLYMER COMPRISING SUBSTANTIALLY ONLY TERMINAL MONO-OLEFINS, WHICH PROCESS COMPRISES CONTACTING AN ALPHA-OLEFIN HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE BETA CARBON ATOM WITH A CATALYST COMPRISING ESSENTIALLY A COMPOUND HAVING THE FORMULA AIR3, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND A MONOVALENT HYDROCARBON RADICAL, AND AT LEAST ABOUT 0.25 GRAM ATOM PER GRAM MOL OF SAID CATALYST OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL COPPER AND SILVER UNDER POLYMERIZATION CONDITIONS, INCLUDING A TEMPERATURE IN THE RANGE OF ABOUT 80*C. TO ABOUT 250*C.
Claim 2
Dependent Claim
98 words
A PROCESS FOR PREPARING A LIQUID OLEFIN POLYMER COMPRISING SUBSTANTIALLY ONLY TERMINAL MONO-OLEFINS, WHICH PROCESS COMPRISES CONTACTING AN ALPHA-OLEFIN HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE BETA CARBON ATOM WITH A CATALYST COMPRISING ESSENTIALLY A COMPOUND HAVING THE FORMULA AIR3, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN AND A MONOVALENT HYDROCARBON RADICAL, AND AT LEAST ABOUT 0.25 GRAM ATOM PER GRAM MOL OF SAID CATALYST OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL COPPER AND SILVER UNDER POLYMERIZATION CONDITIONS, INCLUDING A TEMPERATURE IN THE RANGE OF ABOUT 80*C. TO ABOUT 250*C.
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |