US3028441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali metal-catalyzed olefinic condensation
Assignee: Shell USA Inc
•
Filing: 1960-03-21
•
Granted: 1962-04-03
•
Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Warren V Bush
- 👤 Holzman George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:19
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/02; B01J23/04; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/24; C07C2523/00; C07C2523/02; C07C2523/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y02P20/584; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/942
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A PROCESS FOR THE POLYMERIZATION OF A MONO-OLEFINIC FEED WHICH COMPRISES CONTACTING THE FEED AND AN ALKALI METAL CATALYST AT A NON-POLYMERIZING TEMPERATURE BELOW ABOUT 125*C. FOR A PERIOD OF1/4-4 HOURS AND THEREAFTER RAISING THE TEMPERATURE OF THE OLEFINIC FEED AND CATALYST TO A POLYMERIZATION TEMPERATURE BETWEEN ABOUT 150*C. AND ABOUT 350*C.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE POLYMERIZATION OF A MONO-OLEFINIC FEED WHICH COMPRISES CONTACTING THE FEED AND AN ALKALI METAL CATALYST AT A NON-POLYMERIZING TEMPERATURE BELOW ABOUT 125*C. FOR A PERIOD OF1/4-4 HOURS AND THEREAFTER RAISING THE TEMPERATURE OF THE OLEFINIC FEED AND CATALYST TO A POLYMERIZATION TEMPERATURE BETWEEN ABOUT 150*C. AND ABOUT 350*C.
Claim 3
Dependent Claim
101 words
A PROCESS FOR PRODUCING A CONDENSATION PRODUCT FROM A FIRST REACTANT OF THE GROUP CONSISTING OF ALKYL AROMATIC HYDROCARBONS AND ALIPHATIC MONO-OLEFINIC HYDROCARBONS, AND A SECOND REACTANT OF THE GROUP CONSISTING OF MONO-ALKENES AND NON-CONJUGATED ALKADIENES, WHEREIN THE PRODUCT MOLECULES CONTAIN ALL OF THE CARBON AND HYDROGEN ATOMS OF BOTH REACTANTS, WHICH COMPRISES CONTACTING THE REACTANTS AT A SUBSTANTIALLY NON-CONDENSING TEMPERATURE BELOW ABOUT 100*C. WITH AT LEAST TWO ALKALI METALS FOR A TIME BETWEEN ABOUT 1/4 AND ABOUT 4 HOURS AND THEREAFTER RAISING THE TEMPERATURE TO A CONDENSING TEMPERATURE ABOVE ABOUT 150*C. AND A PRESSURE IN EXCESS OF ABOUT 5 ATMOSPHERES.
Claim 4
Dependent Claim
101 words
A PROCESS FOR PRODUCING A CONDENSATION PRODUCT FROM A FIRST REACTANT OF THE GROUP CONSISTING OF ALKYL AROMATIC HYDROCARBONS AND ALIPHATIC MONO-OLEFINIC HYDROCARBONS, AND A SECOND REACTANT OF THE GROUP CONSISTING OF MONO-ALKENES AND NON-CONJUGATED ALKADIENES, WHEREIN THE PRODUCT MOLECULES CONTAIN ALL OF THE CARBON AND HYDROGEN ATOMS OF BOTH REACTANTS, WHICH COMPRISES CONTACTING THE REACTANTS AT A SUBSTANTIALLY NON-CONDENSING TEMPERATURE BELOW ABOUT 100*C. WITH AT LEAST TWO ALKALI METALS FOR A TIME BETWEEN ABOUT 1/4 AND ABOUT 4 HOURS AND THEREAFTER RAISING THE TEMPERATURE TO A CONDENSING TEMPERATURE ABOVE ABOUT 150*C. AND A PRESSURE IN EXCESS OF ABOUT 5 ATMOSPHERES.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |